bluuebunny/crossref_metadata_2025 huggingface dataset:
Towards Integrated Astrophotonic Instruments for Exoplanet Biosignature Detection
Authors: Cheriton Ross , Densmore Adam , Sivanandam Suresh , de Mooij Ernst , Dezfouli Mohsen Kamandar , Melati Daniele , Ma Rubin , Wang Shurui , Xu Dan-Xia , Schmid Jens H. , Lapointe Jean , Cheben Pavel , Simard Luc , Janz Siegfried
Published: October 2020

We present the design of integrated astrophotonic instruments for high background atmospheric gas detection. Such instruments can be fibre-coupled to long focal length space telescopes as compact, flexure-free, instruments.
Photo-bleaching to enhance the sensitivity of Mach-Zehnder interferometer waveguide for explosive detection
Authors: Zheng Youbin , Jiang Lianzhong , Deng Guowei , Chen Kaixin , Wu Jieyun
Published: October 2020

We demonstrate the photo-bleaching of dipolar sensitive polymer cladding to optimize the evanescent sensing of asymmetric Mach-Zehnder interferometer. The sensitivity of waveguide sensor for nitrobenzene explosive vapor detection is significantly enhanced by more than 100%.
Thermal treatment effect on BAC-Al in 3D printed bismuth/erbium co-doped optical fibre
Authors: Zhang Bowen , Chu Yushi , Fu Xinghu , Wei Shuen , Luo Yanhua , Peng Gang-Ding
Published: October 2020

The thermal treatment effect on bismuth active center associated with aluminum (BACAl) has been investigated. The results indicate that thermal treatment leads to significant degradation of BAC-Al in 3D printed bismuth/erbium co-doped optical fibre.
Femtosecond Ultraviolet Pulses Generated Directly From a Mode-Locked Ce:LiCAF Laser
Authors: Sharp Adam , Kitzler Ondrej , Fuerbach Alex , Spence David J. , Coutts David W.
Published: October 2020

We report the direct generation of sub-100 fs ultraviolet pulses from a synchronously-pumped mode-locked Ce:LiCAF laser. Dispersion-tuning around 290 nm via cavity length is also demonstrated, when setup for longer pulses. © 2020 The Authors
Q-switched Yb:YAG Surface Channel Waveguide Lasers in Single- and Double-pass Pump Schemes
Authors: Bae Ji Eun , Choi Sun Young , Calmano Thomas , Kränkel Christian , Rotermund Fabian
Published: October 2020

We report on evanescent-field Q-switched operation of fs-laser-written Yb:YAG surface channel waveguide lasers employing single-walled carbon nanotubes in single- and double-pass pumping geometries.
High-contrast, intense single-cycle pulses from a doublestage thin-plates configuration
Authors: Seo Meenkyo , Tsendsuren Khurelbaatar , Mitra Sambit , Kling Matthias , Kim Dong Eon
Published: October 2020

A high-contrast 2.6 fs single-cycle pulse (transform-limited duration of 2.55 fs) has been demonstrated by optimizing self-phase modulation (SPM) and self-steepening (SS) effect in a double-stage of multiple thin plates
Theory of Noise Dynamics in Backwards Stimulated Brillouin Scattering
Authors: Nieves Oscar A. , Arnold Matthew D. , Steel M. J. , Schmidt Mikolaj K. , Poulton Christopher G.
Published: October 2020

We develop a general theoretical framework for Stimulated Brillouin Scattering (SBS) noise in the undepleted pump regime. We derive analytic results for signal-to-noise ratio and find that higher optical losses can lead to noise reduction.
Enhanced Optomechanical Magnetometry using Flux Concentrators
Authors: Gotardo Fernando , Bennett James S. , Vyhnalek Brian , Greenall Hamish , Prakash Varun , Macnae James , Miranda Félix , Bulla Douglas , Foster Scott , Bowen Warwick P.
Published: October 2020

We demonstrate that an optomechanical magnetometer’s sensitivity can be improved using a high-permeability flux concentrator. The improvement depends on the geometry of the concentrator and appears to be limited by saturation of the material.
High Resolution Sensing Based on Microwave Photonics
Authors: Li Liwei , Yi Xiaoke , Chew Suen Xin , Nguyen Linh , Minasian Robert
Published: October 2020

Recent advances in microwave photonic sensing techniques are presented in the paper with a focus on the usage of optoelectronic oscillators, microwave photonic interferometry configuration, and microwave photonic filters to enhance sensing performance. © 2020 The Authors
Development of low-loss lead-germanate glass for mid-infrared fiber optics
Authors: Wang Pengfei , Ebendorff-Heidepriem Heike
Published: October 2020

We report the understanding of the factors (gas types, flow rate, dehydration agents, etc.) that determine dehydration efficiency and metallic Pb formation during the lead-germanate glass melting process, as well as the fabrication of low loss lead-germanate glass fiber through extrusion method.
Broadly Refractive Index Design for Porous Microdisk by Tuning Nano-porous Structure
Authors: Mikami Yuya , Yoshioka Hiroaki , Obata Nasim , Takagishi Taku , Han Sangmin , Oki Yuji
Published: October 2020

We demonstrated novel strategy broadly designing RI, focusing on nano-porous structure. Mixing different shaped nano-silica, RI was successfully tuned from 1.23 to 1.33. Microdisk cavity with fine edge was also fabricated.
Direct-printing Method of Waveguide and Flow-channel on Transparent Nano-porous SiO2 Film
Authors: Obata Nasim , Mikami Yuya , Takagishi Taku , Yoshioka Hiroaki , Oki Yuji
Published: October 2020

Direct printing of waveguide and flow-channel on Nanoporous-network in SiO2 layer was proposed and studied. Non spherical nano-SiO2 was coated as transparent platform, and nano-spherical polymer was permeated into the layer to draw waveguide.
Octave-Spanning Supercontinuum Generation in Thermally Deposited As2S3 Waveguide on Wet-etched SiO2 Structure
Authors: Hwang Joonhyuk , Kim Dae-Gon , Han Sangyoon , Jeong Dongin , Lee Yong-Hee , Choi Duk-Yong , Lee Hansuek
Published: October 2020

We report octave-spanning supercontinuum generation in etch-less As2S3 film waveguide platform. The spectrum is extended from 1.05 to 2.71 μm pumped by 45 pJ pulse energy at 1.56 μm telecommunication wavelength. © 2020 The Author(s)
Feedforward Optimisation of Optical Trapping Potentials for Ultracold Atoms
Authors: Gauthier Guillaume , Bell Thomas A. , Baker Mark , Rubinsztein-Dunlop Halina , Neely Tyler W
Published: October 2020

Microscopic control of BECs is realised through an atom-density based optimisation of optical potentials. These techniques make progress on the long-standing goal of producing smooth and arbitrary potentials for cold atom trapping. © 2020 The Author(s)
An Ultrafast Ring Thin-Disk Laser Oscillator with a Repetition Rate Beyond 120 MHz
Authors: Eilanlou A. Amani , Tang Stanley , Abbas Naveed , Aguergaray Claude , Nabekawa Yasuo , Broderick Neil G. R.
Published: October 2020

We report a Kerr lens mode-locked ring thin-disk oscillator with an output power of 24.7 W with the highest demonstrated repetition rate of 120.7 MHz. © 2020 The Author(s)
Antenna-Coupled-Electrode Electro-Optic Modulator for Converting Two Orthogonal-Polarization Field Components Simultaneously for 5G Mobile Systems
Authors: Yokohashi Hiroto , Matsukawa Sayaka , Sato Masahiro , Toba Yoshikazu , Kurokawa Satoru , Murata Hiroshi
Published: October 2020

A new antenna-coupled-electrode electro-optic modulators for converting two orthogonal-polarization components of 28 GHz wireless signals simultaneously was proposed and demonstrated. This is suitable for the applications to 5G mobile communication systems and precise antenna measurements. © 2020 The Author(s)
Fibre Spectroscopy of Nanoscale Spontaneous Parametric Down-Conversion
Authors: Santiago-Cruz Tomás , Haizhong Zhang , Anthur Aravind P. , Krivitsky Leonid , Chekhova Maria V.
Published: October 2020

We report the fibre spectroscopy of photon pairs generated via spontaneous parametric down conversion in nanoscale layers of lithium niobate and gallium phosphide. Photon pairs with spectral bandwidth up to 500 nm have been detected.
Raman Scattering Emission from a Silicon Photonic Nanocavity Excited by a Superluminescent Diode
Authors: Kawakatsu Taro , Yamashita Daiki , Asano Takashi , Noda Susumu , Takahashi Yasushi
Published: October 2020

We report the first observation of spontaneous Raman scattering emission from a Raman silicon nanocavity laser excited by broadband light from a superluminescent diode.
Mechanical-chopper-free NDIR sensing using electrically controllable mid-infrared band-pass filter
Authors: Awane Yusuke , Inoue Takuya , Noda Susumu
Published: October 2020

Toward the realization of compact high-speed non-dispersive infrared sensors, we realize electrically controllable band-pass filters in the mid-infrared by using multiple quantum wells and photonic crystals, and demonstrate mechanical-chopper-free gas detection using the filter.
Multiline CO laser with broadband frequency conversion in nonlinear crystals for gas analysis applications
Authors: Ionin A. A. , Kinyaevskiy I.O. , Klimachev Yu. M. , Kotkov A. A. , Kozlov A. Yu. , Sagitova A. M. , Sinitsyn D. V.
Published: October 2020

Q-switched slab RF-discharge multiline CO laser with broadband frequency conversion in BaGa2GeSe6 and ZnGeP2 crystals was developed. The laser system operated within 2.5-6 μm wavelengths and it was tested for absorption measurement of atmosphere gases.
Temporal imaging for atomic single-photon systems
Authors: Mazelanik Mateusz , Leszczyński Adam , Lipka Michał , Parniak Michał , Wasilewski Wojciech
Published: October 2020

We demonstrate temporal far-field imaging based on ac-Stark spatial spin-wave phase modulation in a gradient echo memory. We achieve resolution of 20 kHz with MHz-level bandwidth and ultra-low noise enabling operation in the single-quantum regime.
Soliton states of micro-resonator for reconfigurable microwave photonic filters
Authors: BrCs Camille-Sophie
Published: October 2020

We propose radiofrequency filters using solitons generated from Si3N4 microresonators. By leveraging inherent diverse solitons states, we show filter tunability achieved without the need for external pulse shaping, establishing an essential step towards reducing complexity and form factor of such devices.
Microwave generation by two mutually delay-coupled semiconductor lasers under asymmetric coupling strength
Authors: Liao Bin-Kai , Chu Yu-Chen , Hwang Sheng-Kwang
Published: October 2020

Two muhually delay-coupled semiconductor lasers operating at period-one dynamics, which behave like an optically injected laser with optical feedback, are studied for microwave generation. Microwaves with a hmable frequency and narrow linewidth are generated.
Towards long-wave infrared lasing by diamond Raman conversion
Authors: Bai Zhenxu , Zhao Chen , Qi Yaoyao , Ding Jie , Yang Xuezong , Wang Yulei , Lu Zhiwei
Published: October 2020

We propose a new route to realize long-wave infrared (LWIR) lasing via diamond Raman conversion. The simulation result shows that diamond-based Raman laser provides a platform to develop all-solid-state LWIR lasers with high output power.
Asynchronous Cross-Correlation Using a Time Reference
Authors: Sharp Adam , Kitzler Ondrej , Fuerbach Alex , Spence David J. , Coutts David W.
Published: October 2020

We have modified an asynchronous cross-correlation technique for measuring the duration of low energy ultrafast ultraviolet pulses using an auxiliary probe laser, extending its capability to sub-100 fs pulses that are not necessarily stable.
Efficiency Increasement of 445-nm Laser Diode Pumped Ti:sapphire Laser by High Intensity Pumping
Authors: Shibata M. , Kataoka S. , Kawashima T. , Han Q. , Kawato S.
Published: October 2020

We quantified the influence of 445 nm pumping for the efficiency of Ti:sapphire laser. Moreover, theoretical analysis shows that efficiency increasement is achieved by high intensity pumping even at 445 nm pumping.
High Bandwidth Phase-Locking for Low-Noise Applications
Authors: Holmes Zachary , Ng Sebastian , Pease Joshua , Ottaway David
Published: October 2020

Electro-optic modulators enable delay-limited, low-noise laser locking servos that can deliver high power outputs with coherent beam combination to circumvent nonlinear limits in fibre lasers. We present a high bandwidth, low-noise phase-locking system.
Optical Resistive Switch with High Extinction Ratio Using Plasmonic Amplification
Authors: Singh Lalit , Babu Prem , Sulabh  , Rajput Swati , Kumar Mukesh
Published: October 2020

An efficient optical readout in electrically writable resistive switch is demonstrated with a high extinction ratio of 16dB utilizing plasmonic amplification using InGaP at 1550nm wavelength. The device has applications in optical modulation and memory.
Measurement of thermal time constant of optical fiber using linear cross-correlation of optical pulses
Authors: Tokunaga K. , Naito Y. , Matsuyama T. , Wada K. , Okamoto K.
Published: October 2020

Using a fiber optic temperature sensing system based on the cross-correlation of picosecond optical pulses from a gain-switched semiconductor laser, the thermal time constants of several types of optical fiber in water were measured.
Fully Etched Grating Coupler Diplexer for Integrated WDM PON Transceivers
Authors: Cheng Lirong , Mao Simei , Mu Xin , Wu Sailong , Fu H. Y.
Published: October 2020

We propose and design a grating coupler diplexer for dual-wavelength-band coupling and splitting for low-cost WDM PON transceivers. Insertion losses are 3.2 dB and 3.5 dB for upstream and downstream channels respectively.
Photodarkening Properties of Typical Ytterbium Doped Silica Fiber
Authors: Zhang Lihua , Dai Jiangyun , Li Yuwei , Sun Shihao , Li Hao , Wang Jianjun , Jing Feng , Gao Cong
Published: October 2020

The photodarkening losses of Al/Yb-doped fiber, Al/P/Yb-doped fiber and Al/Ce/Yb-doped fiber were 181.82 dB/m, 84.56 dB/m, 49.65 dB/m, respectively. The result shows the photodarkening loss can be markedly suppressed by codoping with Ce and P.
Sensitivity-enhanced vibration sensor based on thin cladding excessively tilted fiber gratings
Authors: Zhao Mingfu , Xie Lang , Deng Ou , Wu Decao , Liu Enhua , Liu Peng , Zou Xue , Song Tao , Tang Bin , Luo Binbin
Published: October 2020

We study the method to improve the acceleration sensitivity of excessively tilted fiber grating (ExTFG) vibration sensors. The results showed that the acceleration sensitivity of the ExTFG would increase with the decrease of fiber cladding.
Continuously Tunable NIR Pulsed Parametric Sources by an Is-OPG / OPA for Terahertz-wave Generation
Authors: Hayashi Shin’ichiro , Urata Yoshiharu , Ohno Seigo , Miyamoto Katsuhiko , Sekine Norihiko
Published: October 2020

We demonstrated single-longitudinal-mode, continuously tunable (1.54 – 1.60 μm) and pulsed (~ 1 ns) parametric sources by injection-seeded PPLN-OPG / KTA-OPA as stabilized and tunable (controlled by “spectral drill” cavity) beams for terahertz-wave different frequency / parametric generation.
Single-Shot Ultrafast Burst Imaging using Integral Field Spectrograph with a Lenslet Array
Authors: Itoyama Shota , Nemoto Hirofumi , Takasawa Kazuki , Watase Riku , Kannari Fumihiko
Published: October 2020

We propose an extension of the single-shot burst imaging scheme STAMP by introducing a lenslet array-based integral field spectrograph to improve light utilization efficiency and achieve better matching with spectrally sweeping burst probe pulses.
Surface scattering of pyramid-structured silicon
Authors: Li Zhe , Peng Hao , Liu Lu , Zhang Tieyan , Liu Zhijun
Published: October 2020

Light scattering in pyramid-structured silicon is investigated using a FDTD numerical model. Distinctive spectral and spatial properties are revealed to resemble features in classical Rayleigh and Mie theories but with deviations.
Enhanced FWM in SiN nanowires integrated with 2D graphene oxide films
Authors: Qu Yang , Wu Jiayang , Yang Yunyi , Zhang Yuning , Sciancalepore Corrado , Grillet Christian , Monat Christelle , Jia Baohua , Moss David J.
Published: October 2020

Enhanced four-wave mixing in silicon nitride waveguides integrated with 2D graphene oxide (GO) films is experimentally demonstrated. We achieve a high conversion efficiency improvement of ~7.3 dB for a 2-cm-long waveguide with monolayer GO film.
The influence transcranial magnetic stimulation (TMS) of central nervous system on response time and recognition of visual stimuli
Authors: Putko Paulina , Rola Ratal , Mierczyk Zygmunt
Published: October 2020

Analysis of response time to visual stimuli after applying TMS to the V1 visual cortex showed an increase in the number of incorrect diagnoses and increase in the response time from 843 to 910 ms.
Experimental Demonstration of Multimode Fiber Imaging Based on Pre-trained Autoencoder
Authors: Yu Zhenming , Li Yuang , Chen Yudi , He Tiantian , Zhang Jiaying , Zhao Ruining , Xu Kun
Published: October 2020

We propose to use autoencoder and a two-stage training strategy for image reconstruction in multimode fiber imaging system. Compared with the conventional method of U-net, this approach achieves higher reconstruction accuracy and faster convergence speed.
Quartic self-similar propagation in an optical fiber
Authors: Runge Antoine F. J. , Alexander Tristram J. , Newton Joseph , Alavandi Pranav , Hudson Darren D. , Blanco-Redondo Andrea , de Sterke C. Martijn
Published: October 2020

We study nonlinear pulse propagation in an optical fiber with positive quartic dispersion and gain, and find an exact asymptotic solution. Our solution is confirmed by numerical simulations based on the nonlinear Schrödinger equation.
Harmonic enhancement in high-order harmonic generation from laser-ablated plume
Authors: Singh Mangaljit , Fareed M.A. , Strelkov V. , Laramée A. , Légaré F. , Ozaki T.
Published: October 2020

In this study, we present some of our recent observations with high-order harmonic generation from Sn+ using ~20 fsec mid-infrared driving laser pulses to understand the mechanism of single-order harmonic enhancement.
Optimization of cavity parameters for high-speed quantum computation based on cavity QED
Authors: Utsugi Takeru , Asaoka Rui , Tokunaga Yuuki , Aoki Takao
Published: October 2020

We theoretically derive the optimal parameters of a cavity quantum-electrodynamics system such as the cavity length and the transmittance for achieving high speed quantum computation with low error rates.
Multiphoton luminescence from silicon nanoparticles
Authors: Fontes Aiden M. , Chon James W. M.
Published: October 2020

Silicon nanoparticles are promising imaging agents for deep tissue imaging due to their strong resonant light scattering and multiphoton luminescence excitation capabilities. Here we show that silicon nanoparticles exhibit two or three-photon luminescence upon excitation by a near-infrared and infrared laser pulse. Hysteresis of the luminescence strength dependent on excitation laser power was observed and was attributed to lattice annealing and crystallization during irradiation.
Quantum control beyond the uncertainty limit of position and momentum using a Sagnac interferometer
Authors: Honda Tatsuya , Hofmann Holger F. , Iinuma Masataka
Published: October 2020

To realize optimal simultaneous control of transverse position and momentum, we have constructed a Sagnac interferometer and evaluated the interference between spatial modes with extremely different profiles. The results are consistent with theoretical expectations.
Mid-Infrared Supercontinuum Generation in Germanium-on-Silicon Waveguides
Authors: Torre Alberto Della , Sinobad Milan , Armand Rémi , Luther-Davies Barry , Ma Pan , Madden Stephen , Moss David J. , Mitchell Arnan , Hartmann Jean-Michel , Reboud Vincent , Fedeli Jean-Marc , Monat Christelle , Grillet Christian
Published: October 2020

We report the first experimental supercontinuum generation (from 3.53 to 5.83 µm) in a pure germanium waveguide. By optimizing the design, we envision to generate a supercontinuum extending up to almost 10 µm.
Assessment on the in-field lightpath QoT computation including connector loss uncertainties
Authors: Ferrari Alessio , Balasubramanian Karthikeyan , Filer Mark , Yin Yawei , Le Rouzic Esther , Kundrát Jan , Grammel Gert , Galimberti Gabriele , Curri Vittorio
Published: October 2020

Reliable and conservative computation of the quality of transmission (QoT) of transparent lightpaths (LPs) is a crucial need for software-defined control and management of the wavelength division multiplexing optical transport. The LP QoT is summarized by the generalized SNR (GSNR) that can be computed by a QoT estimator (QoT-E). Within the context of network automation, the QoT-E must rely only on data from the network controller or provided by network elements through common control protocols and data structures. Therefore, given the theoretical accuracy of the QoT-E, the in-field accuracy in the GSNR computation is also determined by the level of knowledge of input parameters. Among these, a fundamental value is the connector loss at the input of each fiber span, which defines the actual power levels triggering the nonlinear effects in the fiber, and so defining the amount of nonlinear interference and spectra tilt due to the stimulated Raman scattering introduced by the fiber span. This value cannot be easily measured and may vary in time because of equipment update or maintenance. In this paper, we consider a lab measurement campaign in which the GSNR has been computed by means of the open source project Gaussian noise model in Python (GNPy) and analyze the computation error distribution. We show how the assumption on the value for the connector loss modifies the GSNR computation error and how the GSNR computation is more conservative while accurate at the lower values for the connector loss. Using the outcome of the measurement campaign carried out in the laboratory, we present results on the error of GSNR computation in a production network, specifically, over two paths of the Microsoft core network. Using GNPy with the assumption of a connector loss of 0.25 dB as derived from the measurement campaign carried out in the laboratory, and using the physical layer description from the network controller, we show that GNPy is not conservative by overestimating the GSNR in only 5% of cases, while in conservative predictions, the underestimation error exceeds 1 dB only for a few outliers.
Three-dimensional reconstruction of integrated implosion targets from simulated small-angle pinhole images
Authors: Li Shijian , Wang Qiangqiang , Wei Xian , Cao Zhurong , Zhao Qing
Published: October 2020

To indirectly evaluate the asymmetry of the radiation drive under limited measurement conditions in inertial confinement fusion research, we have proposed an integral method to approximate the three-dimensional self-radiation distribution of the compressed plasma core using only four pinhole images from a single laser entrance hole at a maximum projection angle of 10°. The simultaneous algebraic reconstruction technique (SART) that uses spatial constraints provided by the prior structural information and the central pinhole image is utilized in the simulation. The simulation results showed that the normalized mean square deviation between the original distribution and reconstruction results of the central radiation area of the simulated cavity was 0.4401, and the structural similarity of the cavity radiation distribution was 0.5566. Meanwhile, using more diagnostic holes could achieve better structural similarity and lower reconstruction error. In addition, the results indicated that our new proposed method could reconstruct the distribution of a compressed plasma core in a vacuum hohlraum with high accuracy.
Ultrafast optical pulse polarization modulation based on the terahertz-induced Kerr effect in low-density polyethylene
Authors: Tan Yong , Zhao Hang , Zhang Rui , Zhang Cunlin , Zhao Yuejin , Zhang Liangliang
Published: October 2020

Controlling the polarization state of an optical pulse within a short gating time facilitates ultrafast all-optical data processing and recording. Using the innovative all-optical modulation method such as the transient terahertz Kerr effect (TKE), the polarization state of the optical pulse can be switched within the gating time on the sub-picosecond scale. In this work, we use high-frequency single-cycle terahertz (THz) pulses to excite the Kerr effects of materials and explore the potential to shorten the gating time of the polarization modulator. A low-density polyethylene (LDPE) material with good Kerr-related properties is proposed to improve the performance of the TKE-based modulator and the obtained ultrafast gating time (FWHM) can reach 86 fs. Experimental evidence for the thickness dependence of the Kerr response demonstrates that the errors caused by optical transmission factors in the LDPE medium can be ignored, and thus the ultrafast gating modulation is mainly limited by the duration of probe pulse. Compared with common TKE-based materials, we believe that the low-cost LDPE is a good candidate to achieve high-power TKE-based ultrafast pulse switching.
Volumetric two-photon fluorescence imaging of live neurons using a multimode optical fiber
Authors: Turcotte Raphaël , Schmidt Carla C. , Booth Martin J. , Emptage Nigel J.
Published: October 2020

Multimode optical fibers (MMFs), combined with wavefront control methods, have achieved minimally invasive in vivo imaging of neurons in deep-brain regions with diffraction-limited spatial resolution. Here, we report a method for volumetric two-photon fluorescence imaging with a MMF-based system requiring a single transmission matrix measurement. Central to this method is the use of a laser source able to generate both continuous wave light and femtosecond pulses. The chromatic dispersion of pulses generated an axially elongated excitation focus, which we used to demonstrate volumetric imaging of neurons and their dendrites in live rat brain slices through a 60 µm core MMF.
Super-resolution imaging with an achromatic multi-level diffractive microlens array
Authors: Banerji Sourangsu , Meem Monjurul , Majumder Apratim , Sensale-Rodriguez Berardi , Menon Rajesh
Published: October 2020

Compound eyes found in insects provide intriguing sources of biological inspiration for miniaturized imaging systems. Inspired by such insect eye structures, we demonstrate an ultrathin arrayed camera enabled by a flat multi-level diffractive microlens array for super-resolution visible imaging. We experimentally demonstrate that the microlens array can achieve a large fill factor (hexagonal close packing with

p
i
t
c
h

=

120

µ

m

), thickness of 2.6 µm, and diffraction-limited (

S
t
r
e
h
l

r
a
t
i
o

=

0.88

) achromatic performance in the visible band (450 to 650 nm). We also demonstrate super-resolution imaging with resolution improvement of

∼

1.4

times by computationally merging 1600 images in the array.
Exceeding the limits of 3D fluorescence microscopy using a dual-stage-processing network
Authors: Zhang Hao , Zhao Yuxuan , Fang Chunyu , Li Guo , Zhang Meng , Zhang Yu-Hui , Fei Peng
Published: October 2020

Although three-dimensional (3D) fluorescence microscopy is an essential tool for life science research, the fundamentally limited optical throughput, as reflected in the compromise between speed and resolution, so far prevents further movement towards faster, clearer, and higher-throughput applications. We herein report a dual-stage mutual-feedback deep-learning approach that allows gradual reversion of microscopy degradation from high-resolution targets to low-resolution images. Using a single blurred-and-pixelated 3D image as input, our trained network infers a 3D output with notably higher resolution and improved contrast. The performance is better than conventional one-stage network approaches. It pushes the throughput limit of current 3D fluorescence microscopy in three ways: notably reducing the acquisition time for accurate mapping of large organs, breaking the diffraction limit for imaging subcellular events with faster lower-toxicity measurement, and improving temporal resolution for capturing instantaneous biological processes. Combining our network approach with light-sheet fluorescence microscopy, we demonstrate the imaging of vessels and neurons in the mouse brain at single-cell resolution and with a throughput of 6 min for a whole brain. We also image cell organelles beyond the diffraction limit at a 2 Hz volume rate and map neuronal activities of freely moving C. elegans at single-cell resolution and 30 Hz volume rate.
Nonlinear silicon photonics on CMOS-compatible tellurium oxide
Authors: Singh Neetesh , Mbonde Hamidu M. , Frankis Henry C. , Ippen Erich , Bradley Jonathan D. B. , Kärtner Franz X.
Published: October 2020

Silicon photonics is coming of age; however, it is still lacking a monolithic platform for optical sources and nonlinear functionalities prompting heterogeneous integration of different materials tailored to different applications. Here we demonstrate tellurium oxide as a complementary metal oxide semiconductor silicon photonics platform for nonlinear functionalities, which is already becoming an established platform for sources and amplifiers. We show broadband supercontinuum generation covering the entire telecom window and show for the first time to our knowledge third-harmonic generation in its integrated embodiment. Together with the now-available lasers and amplifiers on integrated

TeO

2

this work paves the way for a monolithic

TeO

2

-based nonlinear silicon photonics platform.
Coco (2017): una aproximación informacional a la vida después de la muerte
Authors: Moya-Salazar Jeel Jr , Contreras-Pulache Hans , Gomez-Saenz Lucía , Soriano-Abal Anie S , Zorrilla Alonso
Published: October 2020

Se plantea la respuesta a una pregunta que hasta el día de hoy es muy discutible, ¿hay vida luego de la muerte? En este documento daremos una respuesta desde la perspectiva de la Teoría Sociobiológica Informacional. Para esto precisamos momentos exactos de la película Coco (2017), en el cual gracias al cine se puede dar aplicación a esta teoría, cabe indicar primero que en la película hay dos aspectos de un mismo lado. Una vida como información social y una vida como sistema psíquico consciente, entonces el momento clave que nos sirve como ejemplo para explicar este fenómeno es cuando el personaje «Chicharrón» desaparece del mundo de los muertos cuando nadie en el mundo real lo recuerda, sin embargo cuando la anciana «Coco» recuerda a su padre fallecido «Héctor», este logra revivir informacionalmente. A su vez también señalamos y felicitamos la buena calidad gráfica en los detalles que caracterizan la animación. En síntesis, vamos a decir que, en efecto, sí, existe la vida (informacionalmente hablando) después de la muerte. Y esto porque cuando aparecemos en el mundo empezamos a vivir como información social, entonces nacemos, y nuestra vida como información social crece en complejidad creciente.
Hombres (1950) de Fred Zinnemann: paraplejía y principales protagonistas en la rehabilitación de una discapacidad
Authors: Hernández-Yépez Palmer José
Published: October 2020

Hombres (1950) de Fred Zinnemann y protagonizada por Marlon Brando, es una película que cuenta la historia del teniente Ken Wilcott, quien sufre de paraplejía producto de una herida de bala en la espalda cuando se encontraba de servicio en la Segunda Guerra Mundial. Con la ayuda del Dr. Brock y su prometida Ellen logra sobreponerse a su discapacidad e iniciar su proceso de aceptación y rehabilitación. A través del filme se puede apreciar el proceso que padecen los pacientes con alguna discapacidad, desde la negación y depresión hasta finalmente aceptar su discapacidad y proponerse a establecer un buen futuro. Asimismo, en el presente trabajo se discute la importancia de los principales personajes y sus funciones en torno a una discapacidad: el paciente, el médico, la familia y la sociedad.
Ser médico desde dos lenguajes diferentes: el literario y el cinematográfico
Authors: D’ottavio Callegari María Eugenia , D’ottavio Cattani Alberto Enrique , D’ottavio Callegari Guillermo Enrique
Published: October 2020

El presente trabajo aborda la condición de ser médico desde dos lenguajes diferentes: el literario y el cinematográfico, sintetizando aspectos registrados en la bibliografía sobre este tema y cotejándolos con lo citado en un filme documental español reciente que alterna históricas filmaciones de médicos virtuosos con las respectivas aportaciones de destacados profesionales de la Medicina.
Felipe Trigo: un escritor médico (cuasi) olvidado
Authors: Rico Miranda , Guardiola Elena , Baños Josep E
Published: October 2020

Felipe Trigo (1864-1916) fue uno de los médicos escritores más importantes de la época de la Restauración borbónica. Fue médico rural y médico militar pero fue especialmente conocido por su obra literaria y periodística. Entre sus obras más importantes figuran El médico rural (1912) y Jarrapellejos (1914), donde realiza una profunda crítica de la sociedad española de la época. Trigo fue conocido por sus obras de literatura erótica por las que fue atacado en su tiempo, lo que contribuyó a su olvido después de su muerte. El médico rural contiene numerosos elementos autobiográficos del tiempo que ejerció como la medicina en pueblos extremeños. Tiene un notable interés para conocer cómo era la práctica de los médicos, su conocimiento de los avances médicos del siglo XIX y las relaciones que ese establecían con el pueblo llano y la estructura caquicil dominante. Después de décadas de práctico olvido, Trigo vuelve a ser considerado como uno de los médicos escritores más notables de su generación.
Burn Case Prevalence In Dr Kariadi General Hospital Semarang From 2012 to 2014
Authors: Tanuwijaya Lucretya Yeniwati
Published: October 2020

Background: Burns is a type of trauma that requires treatment and rehabilitation, which is still difficult and requires perseverance, a high amount of costs, and trained and skilled personnel. Morbidity and mortality of burns are relatively high, especially in developing countries where burn prevention and treatment systems are inadequate. The prevalence of burns is expected to be an advantage for the development of science in further research and could help clinicians prevent and curative burn care efforts.
Method: The study subjects were burned patients examined and hospitalized at Dr. Kariadi General Hospital, Semarang. Data from each sample's clinical examination results were then collected to be described based on gender, age, burns degree criteria, and etiology of burns.
Results: The total sample obtained was 72 samples, including 61 patients (85.53%) with new burns and 11 non-emergency patients (14.47%). From a total of 61 new burn patients, eight female patients (13.11%) and 53 male patients (86.89%) were obtained; 10 patients (16.40%) were children (0-18 years), 50 (81.96%)were adults (18-65), and one patient (1.64%) belonged to geriatric (> 65 years) ); based on the degree of the burns, seven patients (11.48%) had a moderate degree and 54 patients (88.52%) had a severe degree; there were 28 patients (45.90%) who suffered burns caused by fire, 20 patients (32.79%) due to electricity, six patients (9.84%) caused by scald, and seven patients (11.47 %) with an unknown cause. Of the 61 new burn patients, there were five patients (8.20%) who died.
Conclusion: Burn prevalence in Dr. Kariadi General Hospital, Semarang in 2012-2014 are mostly experienced by men, adults, with severe burn criteria, with the most common etiology is fire.
Turning of Cow Stomach, a Slaughter House By-product into Value-added Products
Authors: Naher Umme Habiba Bodrun , Rahman Md. Bazlur , Zahid Md. Tanjid Ahmed
Published: October 2020

This study investigates to turn the stomach of cow into exotic leather and then leather products that would add value to the end of leather industry. For this purpose, three pieces of cow stomachs are taken to convert into leather through pre-tanning, tanning and post tanning operations i.e. soaking, liming, deliming, bating, pickling, tanning, retanning, dyeing, fatliquoring, finishing etc. Some mechanical operations are also carried out, such as drying and stacking. Several mechanical investigations have been conducted, including tensile strength, stitch tear strength colour rub fastness and shrinkage temperature in order to assess the overall physical properties of prepared leather. Chemical analyses have also been carried out (chromic oxide content, fat content and pH) to find out the quality of leather. It is observed that tensile and stitch tear strengths are much lower than any of the grained upper leather. But the results demonstrate that colour rub fastness is good enough to meet the standard value. Among the different chemical analyses, pH and % of fat content meet the standard value, but chromic oxide content (%) of one sample is below than the standard value of grained upper leather. All these might be due to the prevalence of difference in composition between hide/skin and the stomach of animals. The prepared stomach leather could be used in making of fancy leather goods like key ring, wrist watch belt, hair clip, bracelet etc.
Carlos Aguirre y la intimidad como medio de expresión
Authors: Gastaldi Marcelo
Published: October 2020

El abordaje que este artículo propone realizar acerca de la obra de Carlos Aguirre será desde un ángulo colateral y, a la vez paradójico. Por un lado, se trabajará la noción de que la intimidad opera como un canal de comunicación, en relación con el lenguaje. Por otro lado, el concepto de intimidad será considerado como un «territorio interno» que necesita ser reafirmado en la exterioridad. Mediante el análisis de piezas seleccionadas se verá cómo, en definitiva, la intimidad en la obra de Aguirre se manifiesta principalmente a través de los títulos, la textualidad y las puestas en escena durante los conciertos. Se percibirá, además, una articulación entre melodías simples y claras, texturas de tipo canción y una misma idea conceptual. La intimidad se vuelve una manera de concebir la obra.
Family Development Session Sebagai Program Anti-Kemiskinan di Desa Pungut Hilir? Kajian atas Efektivitas dan Kemandirian
Authors: Annisa Yulia , Kamal Tamrin , Alkhendra Alkhendra
Published: October 2020

This article tries doing to the correlation of program effectiveness through self-reliance for people who are to be a benefits program of cash conditional transfer. The research was used as a quantitative method by correlation of linear regression analysis. Data was collected by collecting of questionnaire process to respondents. The researcher takes respondents who are getting 11 persons with a simple random sampling technic. This study finds that empowerment has been implemented by the schedule and routine activities that it can increase 9,1% for the effectiveness of family development session action. Meanwhile, the family development session was implemented effectively that it was able to rise of advantages for their program in Pungut Hilir Village. The program as well as effectively has been increased for beneficiaries who are occurring of 70,1% self-reliance that is explained by other factors of 29,9% impact. In contrast, this program can be a rising of 70,1% self-reliance for beneficiaries but it is not maximalising for the terminate of anti-poverty. It becomes of dependency people who assist with programs from the government. Society cannot self-standing and less creativity for well-being in their life. This is an impact on people who are powerless and trapped in a culture of poverty that is the effect of hereditary. This condition will become of people who are higher than hanger to the assistance of the program.         Artikel ini mencoba untuk melakukan uji korelasi efektivitas program terhadap kemandirian keluarga penerima manfaat program keluarga harapan. Pengujian korelasi ini menggunakan metode kuantitatif dengan uji regresi linier. Data dikumpulkan melalui proses penyebaran angket (kuesioner) kepada para responden. Peneliti membatasi responden yang hanya mengambil 11 orang dengan teknik simple random sampling. Studi ini menemukan bahwa pelaksanaan kegiatan pemberdayaan secara rutin dan terjadwal dapat meningkatkan efektivitas kegiatan family development session sebesar 9,1%. Sementara itu, pelaksanaan kegiatan family development session secara efektif dapat meningkatkan keluarga penerima manfaat program di Desa Pungut Hilir. Adapun efektivitas program telah mengalami peningkatan kemandirian sebesar 70,1% dengan dijelaskan oleh  faktor sebesar 29,9%. Walaupun program tersebut dapat meningkatkan kemandirian namun upaya memberantas kemiskinan tidak berjalan maksimal. Hal ini menjadikan masyarakat ketergantungan dengan bantuan yang diberikan oleh pemerintah. Masyarakat menjadi tidak mandiri serta kehilangan kreatifitas dalam memenuhi kehidupan sehari-hari. Dampak yang terjadi menjadikan masyarakat tidak berdaya dan terjebak dalam budaya kemiskinan yang turun temurun. Kondisi ini menjadikan tingkat ketergantungan masyarakat terhadap bantuan yang semakin tinggi.
Key drivers of effective collaborative working inconstruction supply chain in South Africa
Authors:   Universityof Johannesburg, South Africaand Kwame Nkurumah University of Science and Technology, Kumasi, Ghana, Kwofie Titus , Aigbavboa Clinton ,   University of Johannesburg, South Africa, Matsane Zanele ,   University of Johannesburg, South Africa
Published: October 2020

Recent researchinto construction supply chain, has identified need to pursue the drivers for effective collaborative working in construction project delivery. Identification and implementation of the drivers for effective collaboration is deemed to be the precursor for optimising the benefits of collaborative working in construction project delivery. However, there has been little research that focus on key drivers of collaborative working in the construction sector compared to the manufacturing, production and service delivery sectors. The aim of this study is to identify the key drivers for effective collaborative working in construction project delivery. The study primarily adopted an exploratory qualitative design using interviews on three case study projectsthatadopted collaborative working in South Africa. The data was analysed using thematic analysis. The results revealed, efficient operational governance practices in team work, effective Integration strategies in team management and people andenvironmental management strategies as the three main factor drivers for effective collaboration in construction business and project delivery. It further established effective communication, building trust, managerial and employee support & motivation and effective leadership as the under bedding tenets of these driving themes. The findings thus affirmed that the human behavioural and environmental factors cannot be overlooked if effective collaborative working in construction project delivery can be achieved. The drivers for effective collaborative working could be diverse with limited understanding of the key factors in the construction industry. The study has given an understanding of the key drivers of effective collaboration thatcan help stakeholders and practitioners to operationalise the factors in order to optimise the benefits of collaborative working in construction supply chain.
Rice consumption prediction using linear regression method for smart rice box system
Authors: Hanif Mulia , Abdurohman Maman , Putrada Aji Gautama
Published: October 2020

Currently, the smart rice box has applied the Internet of Things (IoT) but without prediction of rice runs out which shows the amount of rice consumption. This study applies linear regression to predict the rice runs out in an IoT-based smart rice box and analyzes its performance. The prediction used the dataset obtained by measuring a smart rice box equipped with a load cell weight sensor and Hx711 module. The weight sensor accuracy was an RMSE of between 56 and 170 grams. The linear regression method applied to the smart rice box to predict rice running out has an MSE value of 0.2588 with a prediction window of 43 days. An R-squared value of less than one is obtained with a predictive threshold of 24 days.
Charakter dyskusji politycznej na portalach informacyjnych. Studium przypadku
Authors: Pawlak Piotr
Published: October 2020

The article offers a two-dimensional analysis of the discussion forums on Polish news and information websites, as a public space of political discourse. The author employed statistical analysis for quality variables and interpretation of narrative patterns. The primary aim of the study was to determine the nature of debate in the area under consideration, in the context of exacerbated political dispute. The obtained results were compared with previous findings of this author.
Questionnaire - Answer
Authors: Florian Plit
Published: October 2020

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Questionnaire - Answer
Authors: Rybicka Elżbieta
Published: October 2020

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The Aesthetics of landscape
Authors: Elzenberg Henryk
Published: October 2020

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Aesthetics and ecology in the post-modern perspective
Authors: Zeidler-Janiszewska Anna
Published: October 2020

The analysis sets out from the exhibition entitled Ressource Kunst. Die Elemente Neu Gesehen. The author attempts to outline an area which emerges from the encounter of ecology (as a domain of reflection about the human surroundings) and aesthetics (as a discipline concerned with sensory experience) from the standpoint of post-modernism. The inquiry thus focuses on the moment in which contemporary artistic practices “internalize” ecological issues. Aesthetics becomes a branch of ecology, but at the same time ecology becomes a domain within aesthetics. According to the author, post-modernism has offered advantageous perspectives for pursuing ecological postulations.
Christopher Tilley, Kate Cameron-Daum, An Anthropology of Landscape: The Extraordinary in the Ordinary, UCL Press, London 2017
Authors: Stobiecka Monika
Published: October 2020

Book review
Garden policies of the Warsaw housing cooperative: the garden and the right to the city
Authors: Matysek-Imielińska Magdalena
Published: October 2020

The article analyzes the project of green spaces to accompany a 1920s residential development in Warsaw. The estate was intended to provide a housing minimum for the poorest inhabitants, as well as educate workers how to live an urban lifestyle. It was presumed that access to greenery, nature, a site of leisure and the smell of flowers cannot be a privilege of the bourgeoisie. Thus, the garden policy proved an emancipatory gesture, an assertion of the right to the city and a means of forging civic mindsets and attitudes. The author asks whether the innocent gardens became workshops in Sennett’s understanding, shaping principles and rituals of cooperation, and examines how they helped to promote a new citizen in a new estate.en
Znaleziska statków rzymskich rozbitych u wybrzeży południowej Galii od II w. p.n.e. do I w. n.e. jako świadectwa masowego handlu winem i oliwą
Authors: Góralczyk Agnieszka
Published: October 2020

The article attempts to reconstruct the image of wine and oil trade in the western part of the Mediterranean. The analysis focuses on the wrecks of Roman vessels which sank at the coast of southern Gaul and the wine and oil amphorae carried in their holds.
Wybór Klaudiusza na cesarza
Authors: Sawiński Paweł
Published: October 2020

The article offers a critical analysis of the source accounts which present the circumstances surrounding the election of Claudius for princeps. Among other things, I attempt to answer the question whether his appointment to the imperial throne resulted from a sheer concatenation of circumstances or was perhaps due to planned action of a substantial group of soldiers of the praetorian guard.
Kostium historyczny jako narzędzie manifestacji postaw religijnych i światopoglądowych łódzkich Żydów w latach 1892-1919 na przykładzie wybranych nagrobków z cmentarza żydowskiego w Łodzi
Authors: Gadowska Irmina
Published: October 2020

Stratification of the cemetery’s space reflects the social structure of the city, revealing an internal hierarchy, the worldview and the tastes of the inhabitants. The message that a headstone conveys is a resultant of the communication intended by those who commissioned it and the historical context. The means of visual expression, as well as the nature of the embellishments are the necessary tools for its reading. This text is concerned with the possibilities of analysing and interpreting historical forms found at the Jewish cemetery in Łódź, taking into account the time when they were created, the location, the patron and the historical context.