bluuebunny/crossref_metadata_2025 huggingface dataset:
Um singular encontro com Gregorio Baremblitt
Authors: Rossi André
Published: November 2022

IntroduçãoNa conversa com Heliana, o trato. Eu, que tive um encontro bastante singular com Gregorio, faria algo heterodoxo, seguindo o fluxo do que a própria seção “biografia” da Revista Mnemosine convoca.  A seção “biografia”, inangurada junto da revista, em 2004, é bastante plurívoca e chama a atenção por sua riqueza e versatilidade. De fato, não são cultos à personalidade, mas diversas trajetórias cruzadas, devidamente emaranhadas de historietas e afetos. Verdadeiras análises da implicação, se tomarmos isso como exposição do campo de forças. Histórias de família, de compositores, de militantes, de filósofos medievais, da própria saúde publica, de anônimos artistas encerrados em manicômios, de socioanalistas em suas visitas ao Brasil, do nosso careca mais querido, de atores, de loucos, de cantores, de psicanalistas militantes ousadas e incansáveis e outros tantos queridos e queridas argentino(a)s que habitaram esse pais e emprestaram seus nomes para designar um plano dispersivo de forças nesses artigos.Por seu amigo, mestre e analista, Émílio Rodrigué, Gregorio lhe escreveu uma biografia dos encontros e dos afetos, deixando assim a indicação de como gostaria de ser lembrado. Portanto, desviar dos excessivos personalismos reverentes para acessar a parcialidade do narrador e do narrado. Destarte, deixo o vasto conhecimento da vida e obra de Gregorio para suas próprias palavras e de seus comentadores. “Eu quero ser lembrado como uma pessoa esquecida”, dizia ele em vários momentos, aos mais chegados. Acho importante que o leitor, por motivo de seu falecimento, entre em contato com fragmentos de uma vida. Uma vida e não outra, essa que se singulariza, pelas escolhas, pelo cotidiano de uma tarde de café.[...continua]
To weigh or not to weigh in pregnancy: a retrospective study
Authors: Lennon Roisin
Published: November 2022

Introduction

A rise in the number of caesarean sections and the rate of birth weight over 4kg prompted an advanced midwife practitioner service to introduce routine weighing for all service users and target weight gain based on Institute of Medicine guidelines. The study's aims were to ascertain if maintaining weight gain reduced pre-eclampsia, caesarean section births, birth weight over 4kg and neonatal intensive care unit admissions.

Methods

A retrospective study of weight gain and outcomes for 53 pre- and 46 post-routine weighing service users was conducted.

Results

Over a third (40%) of participants gained excess weight, with a 22% caesarean section rate and 22% of babies weighed over 4kg at birth. There was an overall 6% reduction in caesarean section births and a 22% reduction in babies weighing over 4kg.

Conclusions

Routine weighing and health promotion techniques have the potential to maximise health and wellbeing and could be a long-term investment in the health and wellbeing of mothers and babies.
Engaging in pre-conceptual care: an integrative review
Authors: De Leo Annemarie , Neesham Brydie , Bepete Nyasha , Mukaro Abigail , Nepal Bina Thapa , N'geno Calvin , Muhandiramalag Thilani Awatta
Published: November 2022

Background/Aims

Pre-conception care seeks to optimise maternal health prior to pregnancy. Women who adopt healthy behaviours and engage in pre-conception care are more likely to have a positive pregnancy outcome and recovery period. The study's aim was to explore the factors that motivate women to engage in pre-conceptual care in preparing for pregnancy.

Methods

This integrative literature review was conducted in accordance with Joanna Briggs Institute protocol for conducting systematic reviews. Literature was sourced from Medline, CINAHL, PubMed, ScienceDirect and Google Scholar.

Results

This review reports on four key findings: the internet and social media, women's awareness of pre-conceptual care, social support networks and women's own attitudes towards pregnancy.

Conclusions

Women's awareness of pre-conceptual care does not always motivate women to adopt healthy behaviours in preparation for pregnancy. Further research is warranted to explore strategies that focus on raising women's awareness of pre-conceptual care in preparation for pregnancy.
Going from strength to strength as aesthetic nurses and an association
Authors: Goddard Rachel
Published: November 2022

Rachel Goddard discusses the role of peer support in aesthetic nursing and the success of the recent British Association of Cosmetic Nurses' Autumn Conference
Start premarketing your brand
Authors: Ratcliffe Jason
Published: November 2022

A common nightmare for many who are starting on the road to building their brand and business is there being no customers when trading finally begins or a new product or service is released. Regardless of how good a service is, practitioners will struggle to get sales unless they have an audience. In this article, Jason Ratcliffe discusses some strategies commonly used in the video games industry that can build an audience and engage with them before there is a service to offer
Ring-by-Ring Femtosecond Inscription of a Multilayer Single-mode Bragg Grating in Sapphire Optical Fiber
Authors: Wang Mohan , Salter Patrick , Payne Frank , Shipley Adrian , Morris Stephen , Booth Martin , Fells Julian
Published: November 2022

A multilayer Bragg grating was inscribed in sapphire optical fiber using a femtosecond laser. The grating was single-mode at 1550 nm with a ~0.3 nm bandwidth, showing potential for multi-point high-temperature sensing.
On the existence of nanogratings in commercial oxide glasses
Authors: Xie Qiong , Cavillon Maxime , Poumellec Bertrand , Pugliese Diego , Janner Davide , Lancry Matthieu
Published: November 2022

The ability to induce nanogratings using a femtosecond laser in common oxide glasses is investigated experimentally. A simple and general viscosity-based approach is subsequently employed to predict their existence in glass.
Femtosecond Void-based Fiber Bragg Gratings Responses under both X-rays and High Temperature
Authors: Blanchet T. , Morana A. , Cotillard R. , Marin E. , Ouerdane Y. , Boukenter A. , Fourmentel D. , Destouches C. , Girard S. , Laffont G.
Published: November 2022

Type III (void) femtosecond Fiber Bragg Gratings inscribed with the point-by-point technique in the SMF-28 fiber and thermally annealed were irradiated under both X-rays and temperature ranging from -75°C up to 150°C.
Low-Loss 1000°C-Stable Fiber Bragg Gratings Written Using the Phase Mask Technique and a Femtosecond Laser
Authors: Hnatovsky Cyril , Mihailov Stephen J.
Published: November 2022

Low-loss 1000°C-stable Bragg gratings are inscribed in Ge-doped silica fiber using the phase-mask technique and a single infrared femtosecond laser pulse. The morphology of the light-induced modification is analyzed using scanning electron microscopy.
Electro-plasmonic cancer biomarkers sensing using fiber Bragg gratings
Authors: Lobry Maxime , Loyez Médéric , Debliquy Marc , Chah Karima , Goormaghtigh Erik , Caucheteur Christophe
Published: November 2022

An electro-plasmonic optical fiber grating biosensor was designed to attract and specifically detect breast cancer biomarkers (HER2) using aptamers. The developed biosensor exhibits a high sensitivity with an enhanced limit of detection to HER2.
Resonance frequency mapping interrogation for multimode-fiber identical weak FBG array
Authors: Kim Gyeong Hun , Jung Young-Jun , Sohn Ik-Bu , Kim Chang-Seok
Published: November 2022

We have proposed a multimode-fiber identical weak FBG array interrogation based on resonance frequency mapping (RFM). We fabricated five identical weak FBGs in the graded-index fused silica fiber with intervals of approximately 1 m and then multiplexed all of them based on RFM successfully.
Temperature Influence on the Inscription Efficiency of Type I-UV Bragg Gratings
Authors: Morana A. , Marin E. , Landreau C. , Riporto J. , Ouerdane Y. , Boukenter A. , Girard S.
Published: November 2022

Type I-UV gratings are generally written in photosensitive fiber using a continuous wave UV laser. We demonstrated that the inscription phenomenon is accelerated when performed at a temperature higher than the room one.
FBG inscription in CYTOP polymer optical fiber through over-clad using phase mask technique
Authors: Nan Ying-Gang , Chapalo Ivan , Chah Karima , Hu Xuehao , Mégret Patrice
Published: November 2022

A novel FBG inscription method in cyclic transparent fluoropolymer (CYTOP) polymer optical fiber through the over-clad using phase mask technique and a femtosecond (fs) pulsed laser at 400 nm is reported. It shows that 8 mm-long uniform grating is obtained in less than 20 s with 500 µW average beam power.
Tailored Apodization of Femtosecond Written Fiber Bragg Gratings by Aperture Shaping
Authors: Krämer Ria G. , Schmittner Christian P. , Goebel Thorsten A. , Siems Malte P. , Ullsperger Tobias , Imogore Timothy O. , Richter Daniel , Nolte Stefan
Published: November 2022

We present the realization of tailored apodization profiles of femtosecond written FBGs using phase mask scanning technique with aperture shaping. By controlling the cross-sectional dimension of the refractive index modification, the spectral response is formed.
3D Printing Silica Optical Fibers, Materials and Processes
Authors: Peng Gang Ding , Wang Jiaying , Kong Jing , Luo Yanhua , Chu Yushi , Zhang Jianzhong
Published: November 2022

We present recent work and progress on materials and processes being studied and developed for special silica optical fiber manufacture by way of 3D printing technology.
Multi-functionality in Glasses Managed at the Micrometer Scale by an Imprinting Thermo-electrical Process
Authors: Dussauze Marc
Published: November 2022

An imprinting thermo-electrical process has been developed to pattern chemical, electrical and optical properties on various adapted glassy materials. Results obtained on amorphous niobate films demonstrate χ(2) susceptibilities comparable to a LiNbO3 single crystal.
Competition Effects During Femtosecond Laser Induced Element Redistribution in Laser Written Waveguides
Authors: Macias-Montero Manuel , Moreno-Zárate Pedro , Muñoz Francisco , Sotillo Belén , Garcia-Pardo Marina , Serna Rosalía , Fernandez Paloma , Solis Javier
Published: November 2022

This work reports on the production of fs-laser written waveguides based on the cross migration of Ba and/or La against alkali in modified phosphate glass, and the presence of Ba-La ion migration competition effects.
Femtosecond written waveguide in photosensitive elastomeric PDMS
Authors: Boisvert Jean-Sebastien , Hlil Antsar , Messaddeq Youness , Kashyap Raman
Published: November 2022

We demonstrate waveguide inscription in an elastomeric PDMS host doped with a photosensitive mixture of a germanium derivative and benzophenone. Propagation and bend losses are reported paving the way towards ultra-tunable/flexible photonics devices and sensors.
Inscription of Spectrally Wide FBGs with Ultrashort Pulses Using a Single Uniform Phase-Mask
Authors: Halstuch A. , Ishaaya A.A.
Published: November 2022

Chirp-gratings and arrays of fiber-Bragg-gratings are inscribed with a single uniform phase-mask (PM). These gratings are inscribed with fs pulses, where the wavelength tuneability is achieved by a defocusing lens, PM and fiber movement.
Comparing Strip and Slot Waveguides for Phase-Change Material Devices in SOI Platforms
Authors: Zrounba Clément , Cardoso Raphael , Abdalla Mohab , Cueff Sebastien , Bosio Alberto , Le Beux Sebastien , Letartre Xavier , O'Connor Ian , Pavanello Fabio
Published: November 2022

We introduce a novel design for integrated phase-change material devices. A figure-of-merit is introduced to quantify the improvement of the proposed design over previous implementations. Additionally, the significance of non-linear effects is discussed.
Hexagonal-Holed Perfect Absorber for Sensing Applications
Authors: Dang Phuc Toan , Lee Ji-Hoon
Published: November 2022

We proposed a near-infrared perfect absorber. Numerical results show a resonance peak at 928 nm with 99.9 % absorption. This resonant spectrum is sensitive to the surrounding medium and is investigated for a sensitive refractive index sensor.
Modulation instability cancellation in the anomalous dispersion regime
Authors: Castelló-Lurbe David
Published: November 2022

Coherent supercontinuum generation from picosecond pulses pumped in the anomalous dispersion regime is numerically demonstrated in a silicon waveguide by canceling modulation instability through the Kerr nonlinear-index dispersion.
Deterministic Terahertz wave control in complex media
Authors: Kumar Vivek , Cecconi Vittorio , Peters Luke , Bertolotti Jacopo , Pasquazi Alessia , Gongora Juan Sebastian Totero , Peccianti Marco
Published: November 2022

Harnessing the propagation of ultrafast pulses through complex media is a key challenge in photonics. In this theoretical work, we demonstrate that THz field-sensitive detection enables the broadband and deterministic spatiotemporal control of complex media.
Investigating RC and Transit Time Limited Bandwidth of Integrated Balanced Detectors through an Equivalent Circuit Model
Authors: Nag Dhiman , Yao Weiming , van der Tol Jos J. G. M. , Williams Kevin A.
Published: November 2022

RC and transit time limited bandwidth of balanced detector is investigated through an equivalent circuit model. While series resistance is not a critical parameter, junction capacitance and load impedance play major roles in resulting bandwidth.
Optical Quantum Sensing for Ring laser gyroscope
Authors: Ham Byoung S.
Published: November 2022

In this talk, a method of optical quantum sensing is proposed and applied for a sensitive classical device of a ring laser gyroscope using coherence de Broglie waves to overcome both classical and quantum limits.
Modeling of Resonance-splitting in Forward-biased Active Silicon Ring Resonators
Authors: Zarif Arezoo , Cătuneanu Mircea-Traian , Jamshidi Kambiz
Published: November 2022

Resonance-splitting is measured in active silicon micro-ring resonators, resulting from the coupling between counter-rotating modes. Parameters of the model, using Temporal Coupled Mode Theory (TCMT), are obtained by fitting the model to the experimental results.
Copper-based V-groove Silicon Waveguides
Authors: Xu Zhe , Li Rengang , Zhao Yaqian
Published: November 2022

We propose a hybrid copper nanowire-integrated V-groove silicon waveguide. The V-groove waveguide is also coated with a top-etched silicon nitride film. The trends of mode properties with varying structural parameters are investigated via the finite element method.
Beyond Three-octave OAM Supercontinuum Generation in Dual Concentric Ring-core Fiber with Four ZDWs
Authors: Geng Wenpu , Fang Yuxi , Wang Yingning , Wang Zhi , Liu Yan-ge , Zhang Lin , Bao Changjing , Ren Yongxiong , Pan Zhongqi , Yue Yang
Published: November 2022

We design a dual concentric ring-core fiber with four ZDWs to enable a broadband OAM supercontinuum generation. A 3534-nm supercontinuum forms from 442 to 3976 nm at -40 dB, which covers beyond three-octave bandwidth.
High numerical aperture metalens for generating sub-diffraction non-diffracting beams at violet
Authors: Zhang Kun , Jiang Hai , Zhou Yi
Published: November 2022

We propose a meta-axicon with a high numerical aperture (NA) of 0.75 at the wavelength of 405 nm. We both numerically and experimentally demonstrate that our method can generate non-diffracting beams with sub-diffraction limited focusing.
Design of a photonic crystal waveguide on a plasmonic platform for gas sensing applications
Authors: Dubois Florian , Jannesari Reyhaneh , Spettel Jasmin , Dao Thang Duy , Tortschanoff Andreas , Zhai Yanfen , Fleury Clement , Consani Cristina , PUhringer Gerald , Saeidi Parviz , Stocker Gerald , Grille Thomas , Mohssen Moridi , Jakoby Bernhard
Published: November 2022

We present a design for a photonic crystal waveguide made on a plasmonic integrated photonic platform, optimized for gas sensing. The waveguide benefits from both aspects to exhibit high sensitivity and low footprint.
Coupling Spin Defects in Hexagonal Boron Nitride to Monolithic Bullseye Cavities
Authors: Fröch Johannes E. , Spencer Lesley , Kianinia Mehran , Totonjian Daniel , Nguyen Minh , Dyakonov Vladimir , Toth Milos , Kim Sejeong , Aharonovich Igor
Published: November 2022

This work couples spin defects in hexagonal boron nitride (hBN) to monolithic bullseye cavities. Demonstrating enhanced emission, optically detected magnetic resonance and improved signal to noise ratio. Constituting an initial step towards scalable spin-photon interfaces.
Model for supercontinuum generation in graphene-covered nanowires based on a photon-conserving propagation equation
Authors: Linale N. , Fierens P. I. , Vermeulen N. , Grosz D. F.
Published: November 2022

We present a model for supercontinuum generation correctly accounting for the photon number evolution under Kerr and TPA nonlinearities. The influence of graphene is treated within the framework of saturable photoexcited-carrier refraction.
Incoherent Digital Holography using Spiral Rotating Point Spread Functions Created by Double-helix Beams
Authors: Dubey Nitin , Anand Vijayakumar , Khonina Svetlana , Kumar Ravi , Reddy Andra Naresh Kumar , Rosen Joseph
Published: November 2022

A new incoherent 3D imaging system with a rotating point spread function has been developed. Different computational reconstruction methods such as non-linear reconstruction and the Lucy-Richardson-Rosen algorithm were tested, and their performances were compared.
Smart transmission matrix measurement of multimode fibers using digital holography and deep learning for confidential data transmission
Authors: Rothe Stefan , Zhang Qian , Pohle Dennis , Koukourakis Nektarios , Czarske Juergen W.
Published: November 2022

We present smart measurements of the transmission matrix of multimode fibers (MMF). The modal crosstalk of the MMF is exploited by authorized communication participants against an eavesdropper towards physical layer security.
On the 3D Pose Dynamics of Flowing Cells in Holo-Tomographic Flow Cytometry
Authors: Pirone Daniele , Sirico Daniele G. , Miccio Lisa , Bianco Vittorio , Capozzoli Amedeo , Curcio Claudio , Liseno Angelo , Memmolo Pasquale , Ferraro Pietro
Published: November 2022

A method is discussed to retrieve the unknown 3D positions and rolling angles from the digital holograms of flowing cells for reconstructing the spatial distribution of their refractive index through the tomographic flow cytometry tool.
Multiplane light conversion design with physical neural network
Authors: Zhu Zheyuan , Doerr Joe H. , Li Guifang , Pang Sean
Published: November 2022

We present a physical neural network (PNN) approach towards multiplane light conversion (MPLC) design. PNN performs a full parameter search with flexible optimization pathways and can tune various design attributes as hyperparameters.
Hologaphic retinal projection near-eye display
Authors: Wang Zi , Zhang Xu , Feng Qibin , Lv Guoqiang
Published: November 2022

Our recent works on holographic retinal projection display (RPD) are introduced here. Full-color holographic RPD with eyebox extension is proposed. Holographic super multi-view RPD is reported to present depth cues within a large depth range. The field of view limitation is broken through a two-step Fresnel diffraction calculation method.
Occlusion between three-dimensional scenes in light field and hologram domains using non-hogel-based computer generated hologram technique
Authors: Min Dabin , Min Kyosik , Park Jae-Hyeung
Published: November 2022

We propose a novel occlusion-processing technique using the non-hogel-based computer-generated hologram. The proposed technique calculates a composite hologram with occlusion between background hologram and foreground light field which is directly processed without conversion between the light field and the hologram domains.
Maximum Trapping Distance Limitation for Photophoretic Optical Traps
Authors: Childers Jason , Ababseh Essa , Jin Xiaomin
Published: November 2022

The effect of lens focal length in a photophoretic trapping system is studied for the first time. A maximum focal length limitation is identified and measured where particles cannot be trapped beyond this limit.
Enabling Low-light Digital Holography with a Quanta Image Sensor
Authors: Zhang Yunping , Lam Edmund Y.
Published: November 2022

We demonstrate a digital holographic imaging system where the hologram is captured by a quanta image sensor (QIS), and the object wavefront is then computationally retrieved. This scheme enables digital holography at a very low signal level via individual photon detection.
Multiple orthogonal free-space channels for chip-to-chip communication using self-configuring MZI meshes
Authors: SeyedinNavadeh SeyedMohammad , Milanizadeh Maziyar , Zanetto Francesco , Grimaldi Vittorio , De Vita Christian , Ferrari Giorgio , Miller David A.B. , Melloni Andrea , Morichetti Francesco
Published: November 2022

A pair of self-configuring Mach-Zehnder based meshes controlling arrayed optical antennas is exploited to establish chip-to-chip free-space communication using multiple orthogonal beams. The link is automatically established and preserves more than 30-dB rejection between channels.
Effects of Disorders on Ring Resonator-Based Topological Lasers at 1.55 µm
Authors: You Weicheng , Thompson Bradley J. , Shah Piyush J. , Bedford Robert , Gibson Ricky , Arafin Shamsul , Badescu Stefan C.
Published: November 2022

We investigate the disorders of microring resonators caused by conventional microfabrication technologies. Our experimental and theoretical results help understand the degree of the disorders in a ring array and their impact on topological insulator lasers.
Breaking the Delay-Bandwidth Product of Continuously-Tunable MZI Delay-Lines
Authors: Petrini Matteo , Seyedinnavadeh Seyedmohammad , Morichetti Francesco , Melloni Andrea
Published: November 2022

We report on a novel integrated delay-line architecture enabling to break the delay-bandwidth product of Mach-Zehnder Interferometers delay-lines. A continuously tuneable delay from 0 to 100 ps is achieved across a bandwidth of 21 GHz.
Compact and Fabrication Tolerant Silicon Strip-Slot Waveguide Mode Converter
Authors: Nair Devika Padmakumar , Ménard Michaël
Published: November 2022

A silicon strip-slot waveguide mode converter with large fabrication tolerances is demonstrated. The structure provides efficient strip-slot waveguide coupling over wavelength range of 1300-1700 nm with an average insertion loss of 0.24 dB.
Sampled Subwavelength Grating Waveguide Bragg Grating Structures
Authors: Taglietti Bruno , Sun Hao , Chen Lawrence R.
Published: November 2022

We simulated and characterized SWG-based sampled Bragg gratings for multichannel filtering. The reflection band wavelength spacing of 1.2 nm show good accuracy with the simulated results and over 99% of peak reflectivity.
Waveguide chip based super-resolution microscopy for T cell imaging
Authors: Dutta Surjendu Bikash , Engdahl Anders Kokkvoll , Belle Stefan , Hübner Wolfgang , Schüttpelz Mark , Huser Thomas , Dell'Olio Francesco
Published: November 2022

Imaging and the quantitative estimation of T cell actin cytoskeletal dynamics are important to describe immunological processes. This study presents waveguide chip based super-resolution imaging of the filamentous actin cytoskeleton of Jurkat T cells.
78% pump recycler for kW fiber lasers
Authors: Lin Weixuan , Desjardins-Carrière Maxime , Iezzi Victor Lambin , Vincelette André , Bussières-Hersir Marie-Hélène , Rochette Martin
Published: November 2022

We report a 78% cladding pump recycler based on a tapered fiber bundle. The conversion efficiency of a 2.2 kW Yb-doped fiber laser is improved by the pump recycler from 66.7% to 73.0%.
Selective Area Heteroepitaxy of Quantum Dot Lasers on Nano-V-grooved Silicon
Authors: Shi Bei , Zhu Si , Song Bowen , Hu Diya , Vo Tuan , Herman Joshua , Leake Gerald Jr. , Harame David L. , Klamkin Jonathan
Published: November 2022

Quantum dot laser structures were selectively grown on nano-V-grooved (001) Si substrates with low dislocation density GaAs buffers that include optimized dislocation filters. High photoluminescence intensity and narrow emission were demonstrated near 1310 nm.
Subwavelength plasmonic-enhanced graphene-hBN-graphene silicon modulator
Authors: Zhai Tingting , Wang Binbin , Wu Kuan-Ting , Seok Jinbong , Kim Sera , Woon Wei-Yen , Vincent Remi , Yang Heejun , Salas-Montiel Rafael
Published: November 2022

We demonstrate a high-performance subwavelength scale plasmonic enhanced graphene/hexagonal boron nitride/graphene-based silicon electro-optic modulator, enabling low energy consumption for applications in communications, nonlinear photonics, and photonic neuromorphic networks.
Scaling theory of wave confinement in classical and quantum periodic systems
Authors: Kozon Marek , Lagendijk Ad , Schlottbom Matthias , van der Vegt Jaap J. W. , Vos Willem L.
Published: November 2022

Identifying and classifying confinement is crucial for understanding the wave behavior in structures with functional defects, but currently only indirect methods exist. We present a direct scaling-based classification method and apply it to realistic structures.
Off-axis digital holography for analysis of fibre tapping of few mode fibres
Authors: Bradley Thomas , Velázquez-Benítez Amado M. , van der Heide Sjoerd , van den Hout Menno , van Vliet Vincent , Bigot-Astruc Marianne , Correa Adrian Amezcua , Sillard Pierre , Winzer Peter , Okonkwo Chigo
Published: November 2022

Off-axis digital holography is used to analyse the impact of fibre tapping in few mode fibres. Mode dependent loss and cross talk are analysed under fibre tapping with a measured MDL increase of 2.5 dB.
Analytical modelling of system impairments in ultrawideband transmission context
Authors: Vasylchenkova Anastasiia , Buglia Henrique , Sillekens Eric , Galdino Lidia , Killey Robert I. , Bayvel Polina
Published: November 2022

Analytical models for the estimation of nonlinearity-caused impairments enable effective maximisation of total data throughput. We demonstrate a 3 times improvement in per-channel mutual information when data is redistributed from the L-band to the S-band.
Propagation Impairment in Single-Wavelength, Single-Fiber Bidirectional Optical Transmission
Authors: Virgillito Emanuele , Straullu Stefano , Castoldi Andrea , Bratovich Rudi , Bovio Andrea , Pastorelli Rosanna , Curri Vittorio
Published: November 2022

We experimentally observe bidirectional transmission of two same wavelength coherent channels on a single fiber. We show that Rayleigh backscattering and, especially, lumped reflections are additional impairments and provide QoT mathematical modeling.
Examining the Benefit of Bidirectional Transmission in Amplified Fiber Links
Authors: Balasis Filippos , Elson Daniel J. , Wakayama Yuta , Yoshikane Noboru , Tsuritani Takehiro
Published: November 2022

This paper examines, through simulation, whether there is a benefit of bidirectional transmission in mitigating the inter-channel nonlinear interference and eventually improving the quality of transmission of lightpaths.
Free-space optical communication with a quantum cascade laser frequency comb
Authors: Corrias Nicola , Gabbrielli Tecla , De Natale Paolo , Consolino Luigi , Cappelli Francesco
Published: November 2022

We demonstrate the potentiality of quantum-cascade-laser frequency combs for optical communication in the atmospheric transparency window around 4 µm. The intermodal beat note is used as carrier for transmitting the analog signal via frequency-modulation.
Fusion of Physics and AI for Building Self-driving Optical Networks
Authors: Liu Xiaomin , Zhang Yihao , Cai Meng , Yi Lilin , Hu Weisheng , Zhuge Qunbi
Published: November 2022

For building a self-driving optical network, advanced techniques for network modeling and monitoring are essential. We discuss possible approaches for fusing the artificial intelligence and physics to further improve the accuracy and reliability.
Silk Protein Sheet Origami for Directional Random Biolasers
Authors: Dogru-Yuksel Itir Bakis , Jeong Chanho , Park Byeonghak , Han Mertcan , Lee Ju Seung , Kim Tae-il , Nizamoglu Sedat
Published: November 2022

We demonstrate controlled random lasers via origami of dye-doped silk fibroin protein sheets. Folding the films generate nano-scale cracks that form spatially localized feedback and lead to low threshold laser emission.
Efficient Nanocrystal-based White LEDs with Suppressed Absorption Losses
Authors: Onal Asim , Sadeghi Sadra , Melikov Rustamzhon , Nizamoglu Sedat
Published: November 2022

We demonstrate efficient white LEDs by using the combination of green-emitting near-unity quantum dots with red-emitting nanorods. Stokes-shift in red via dot-to-rod transition reduced absorption losses and led to a high quantum efficiency of 42.9%.
Distinguishing thermal from non-thermal (“hot”) carriers in illuminated molecular junctions
Authors: Dubi Yonatan , Un Ieng Wai , Sivan Yonatan
Published: November 2022

We show that the current measurements in the plasmonic molecular junction in Reddy et al. [Science 369, 2000] were misinterpreted as an indication of non-thermal electrons, while their SI data are do due those.
Phase-sensitive amplification in integrated waveguides
Authors: Karlsson Magnus
Published: November 2022

We discuss the recent results of parametric gain in integrated waveguides. Especially the phase-sensitive gain and noise properties will be discussed, as will the non-negligible loss in these waveguides.
Wavelength Tunable Laser based on Angular Tuning of Two Dimensional Nonlinear Photonic Crystals with Disk Shape
Authors: Chang K.-H. , Ousaid S. Mohand , Peng L.-H. , Boudrioua A.
Published: November 2022

A wavelength tunable parametric down-conversion laser was achieved on disk 2D periodically poled lithium tantalate. The idea facilitated angle tuning more than 90° and the spectral range of signal could vary from 600nm to 787nm.
Synchronized Breathers Interactions
Authors: Gelash Andrey , Xu Gang , Kibler Bertrand
Published: November 2022

We configure theoretically using the nonlinear Schrodinger equation model phase synchronized interactions of breather light waves. Then we perform experiments in a nearly conservative optical fiber system, which accurately reproduce the predicted multi-breather dynamics.
Broadband Frequency Conversion of Ultrashort Laser Pulses using Surface Lattice Resonances in Plasmonic Metasurfaces
Authors: Stolt Timo , Huttunen Mikko J.
Published: November 2022

We propose a metasurface-based method for nonlinear frequency conversion of ultrashort laser pulses. The method utilizes a temporal-focusing scheme and spatial dis-persion of surface lattice resonances to achieve nonlinear frequency conversion of a 100-nm-broad laser pulse.
Langevin’s model for soliton molecules in ultrafast fiber ring laser cavity
Authors: Sheveleva Anastasiia , Hamdi Said , Coillet Aurélien , Finot Christophe , Colman Pierre
Published: November 2022

Using the SINDy framework, we construct a Langevin’s model to describe accurately the vibration of a soliton-molecule. This simpler model allows discussions regarding the dynamics of fluctuation and dissipation mechanisms at play inside a soliton-molecule.
Parametrically-driven temporal cavity solitons in a pure Kerr resonator
Authors: Paligora David , Leonhardt Miriam , Englebert Nicolas , Leo François , Fatome Julien , Erkintalo Miro
Published: November 2022

We numerically and theoretically show that parametrically-driven cavity soli-tons can be sustained in a bichromatically-pumped dispersive resonator with Kerr-only non-linearity. The solitons come in two opposite phases and can experience long-range interactions.
Third-Order Nonlinear Optical Response and Optical Limiting of WS2 Quantum Dots
Authors: Karmakar Riyanka , Mandal Dipendranath , Adarsh K.V.
Published: November 2022

We demonstrate wavelength- and pulse-width-dependent third-order nonlinear optical response of WS2 quantum dots. The cumulative contribution of free-carrier and surface defects results in the remarkable optical nonlinearity with an optical limiting threshold of 1.4 GW/cm2.
Challenges associated with fabrication of III-V integrated optical nanostructures for nonlinear optics
Authors: Vyas Kaustubh , Dolgaleva Ksenia
Published: November 2022

III-V semiconductors are elements formed using the group III and group V of the periodic table. These materials are known for their large nonlinear properties. Fabrication of integrated photonic components using these materials is rather challenging. In this work, we outline the various fabrication challenges for making nonlinear nanostructures using III-V alloys..
Local Refractive Index Change by Tip-Enhanced Femtosecond Laser for Surface Photonic Crystal Creation
Authors: Tranca Denis E. , Hristu Radu , Stanciu Stefan G. , Stanciu George A.
Published: November 2022

The local refractive index of polymethyl methacrylate is modified due to low power femtosecond laser exposure in the proximity of a sharp metallic tip. Such modified nanoscale-sized regions can be used for photonic crystals creation.
Observation of Photonic Orbital Corner States in Higher-order Topological Insulators
Authors: Bongiovanni Domenico , Hu Zhichan , Zhang Yahui , Wang Ziteng , Wang Xiangdong , Jukić Dario , Hu Yi , Song Daohong , Morandotti Roberto , Buljan Hrvoje , Chen Zhigang
Published: November 2022

We demonstrate orbital corner states in photonic higher-order topological insulators (HOTIs), comparing the p-band characteristics between two-dimensional Su-Schrieffer-Heeger (SSH) and breathing Kagome lattices. The orbital corner excitations are explored in topological nontrivial and trivial regimes.
Dissipative light bullets in externally driven multimode Kerr cavity with parabolic 3D potential
Authors: Sun Yifan , Parra-Rivas Pedro , Milián Carles , Ferraro Mario , Mangini Fabio , Zitelli Mario , Jauberteau Raphael , Wabnitz Stefan
Published: November 2022

We study the formation of dissipative light bullets in externally driven multimode GRIN fiber cavity with chirped pulse pumping. Numerical simulations show the generation of stable bullets, with a spatiotemporal shape controlled via the pump chirp.
Dispersion engineering for Kerr frequency comb generation in gallium phosphide photonic crystal cavity resonators
Authors: Nardi Alberto , Riemensberger Johann , Kippenberg Tobias J. , Seidler Paul
Published: November 2022

By engineering the geometric dispersion, we demonstrate Kerr frequency comb generation in gallium phosphide photonic crystal cavity resonators with both anomalous and near-zero dispersion while achieving intrinsic quality factors as high as 5 × 105.
Machine learning control of nonlinear fiber supercontinuum generation for application in molecular spectroscopy
Authors: Hary Mathilde , Salmela Lauri , Dudley John M. , Genty Goëry
Published: November 2022

We combine a programmable spectral filter and machine learning via a genetic algorithm to optimize nonlinear fiber propagation dynamics to generate an on-demand target spectrum.
Exceptional Precision of a Nonlinear Optical Sensor at a Square-Root Singularity
Authors: Peters Kevin J.H. , Rodriguez Said R.K.
Published: November 2022

We demonstrate a single-mode nonlinear optical resonator for exceptional sensing in noisy environments. The signal based on the resonator’s dynamic hysteresis displays a square-root singularity, enhancing the sensitivity, precision and the signal’s information content.
Leveraging self-symmetrized symmetry breaking in Kerr resonators for robust random number generation
Authors: Quinn Liam , Xu Gang , Li Zongda , Fatome Julien , Xu Yiqing , Murdoch Stuart G. , Erkintalo Miro , Coen Stéphane
Published: November 2022

We present an all-optical random number generator employing polarization symmetry-breaking in a nonlinear Kerr cavity. Statistically confirmed random numbers are generated at MHz rates without post-processing, paving the way for a novel coherent Ising machine.
Chaos transfer in Optomechanical Oscillations in Microbubble Resonators
Authors: Frigenti Gabriele , Farnesi Daniele , Pelli Stefano , Delgado-Pinar Martina , Andrés Miguel V. , Conti Gualtiero Nunzi , Soria Silvia
Published: November 2022

We report the activation of optomechanical chaotic oscillations and chaos transfer from a strong pump to a very weak probe in microbubble resonators, both signals follow the same route to chaos.
Coexistence of Gain through Filtering and Parametric Instability in a Fiber Ring Cavity
Authors: Negrini Stefano , Ceppe Jean Baptiste , Conforti Matteo , Kudlinski Alexandre , Perego Auro , Mussot Arnaud
Published: November 2022

We experimentally and numerical investigate the coexistence of Gain through Filtering and parametric instability in a fiber ring cavity, and their dependency from input power and cavity phase detuning.
Generation of ultrashort biphotons by loss-induced shaping
Authors: Chen Yen-Ju , Chen Tzu-An , Cheng Ting , Su Wen-Chiuan , Chung Hung-Pin , Chen Yen-Hung , Chuu Chih-Sung
Published: November 2022

We experimentally study the manipulation of the biphoton wave packets by engineering the loss in the parametric down-conversion. We demonstrate a tailored biphoton wave packet shortened by one order of magnitude as compared to the lossless process.
Incidental data: observation of privacy compromising data on social media platforms
Authors: Kutschera Stefan
Published: November 2022

Social media plays an important role for a vast majority in one’s internet life. Likewise, sharing, publishing, and posting content through social media has nearly become effortless. This unleashes new threats as unintentionally shared information may be used against oneself or loved ones. With open-source intelligence data and methods, we show how unindented published data can be revealed and further analyze possibilities that can potentially compromise one’s privacy. This is backed up by a popular view of interviewed experts from various fields of expertise. We were able to show that only 2 hours of manually fetching data are sufficient to unveil private, personal information that was not intended to be published by the person. Two distinctive methods are described with several approaches. From our results, we were able to describe a 14-step awareness guideline and proposed a change of the law within Austrian legislation. Our work has shown that awareness among persons on social media needs to be raised. Critical reflections on our work has revealed several ethical implications that have made countermeasures necessary; however, it can be assumed that criminals do not to these.
Identifying and analyzing sepsis states: A retrospective study on patients with sepsis in ICUs
Authors: Fang Chih-Hao , Ravindra Vikram , Akhter Salma , Adibuzzaman Mohammad , Griffin Paul , Subramaniam Shankar , Grama Ananth
Published: November 2022

Sepsis accounts for more than 50% of hospital deaths, and the associated cost ranks the highest among hospital admissions in the US. Improved understanding of disease states, progression, severity, and clinical markers has the potential to significantly improve patient outcomes and reduce cost. We develop a computational framework that identifies disease states in sepsis and models disease progression using clinical variables and samples in the MIMIC-III database. We identify six distinct patient states in sepsis, each associated with different manifestations of organ dysfunction. We find that patients in different sepsis states are statistically significantly composed of distinct populations with disparate demographic and comorbidity profiles. Our progression model accurately characterizes the severity level of each pathological trajectory and identifies significant changes in clinical variables and treatment actions during sepsis state transitions. Collectively, our framework provides a holistic view of sepsis, and our findings provide the basis for future development of clinical trials, prevention, and therapeutic strategies for sepsis.
Predictors of iron deficiency anaemia among children aged 6–59 months in Tanzania: Evidence from the 2015–16 TDHS-MIS cross-sectional household survey
Authors: Msaki Rose V. , Lyimo Elizabeth , Masumo Ray M. , Mwana Eliasaph , Katana Doris , Julius Nyamizi , Munuo Adeline , Leyna Germana , Issaka Abukari I. , Dhami Mansi V. , Agho Kingsley E.
Published: November 2022

Iron deficiency anaemia remains a public health problem, particularly in children aged 6–59 months. This study assessed factors associated with iron deficiency anaemia among children aged 6–23 months, 24–59 months and 6–59 months in Tanzania. Data for this cross-sectional study were extracted from the 2015–16 Tanzania Demographic and Health Survey and Malaria Indicator Survey (2015–16 TDHS-MIS). The study covered 8014 children aged 6–59 months and their mothers. Iron deficiency anaemia was defined (haemoglobin < 11g/dL). Univariable and multivariable logistic regression analyses that adjust for clustering and sampling weights were conducted to describe the associations between anaemia and potential confounding variables. The prevalence of iron deficiency anaemia among children aged 6–23 months, 24–59 months and 6–59 months were 76%, 49% and 59%, respectively. Factors associated with increased odds of iron deficiency anaemia among children aged 6–23 months included a mother being employed, being a male child, child perceived to small size at birth by mothers, a mother being anaemic and children belonging to the poorest socio-economic quintile. In addition, being a mother with no schooling, children not being dewormed, a mother being anaemic, delivering a baby at home, child fever and stunting, were factors associated with increased odds of iron deficiency anaemia among children aged 24–59 months. Factors associated with increased odds of iron deficiency anaemia among children aged 6–59 months were: a mother being employed, being a mother with no schooling, being a male child, belonging to the 6–59 months age bracket, a mother having a BMI of between 19 and 25 kg/m2, a mother being anaemic, having a baby at home, children belonging to bigger households, child fever and stunting. Interventions to minimise the burden of iron deficiency anaemia in children should target employed and/or anaemic mothers, poor and rich households, as well as male children.
Are rural pregnant women disadvantaged in accessing intermittent preventive treatment in pregnancy in Ebonyi State, Nigeria?
Authors: Akpa Christian Obasi , Azuogu Benedict Ndubueze , Akpa Winifred Chinwendu , Umeokonkwo Chukwuma David , Denwigwe Chiaka Patience , Azuogu Victoria Chioma , Agu Adaoha Pearl , Ogah Onwe Emeka , Akamike Ifeyinwa Chizoba , Ituma Ituma Bernard , Umeokonkwo Adanna Anthonia , Onah Cosmas Kenan , Adeke Azuka Stephen , Usuwa Ifeoma Sophia , Ogbonnaya Lawrence Ulu , Ossai Edmund Ndudi , Alo Chihurumnanya , Onwasigwe Chika , Uzochukwu Benjamin Sunday
Published: November 2022

Introduction

Adequate intermittent preventive treatment (IPTp) uptake (≥3 doses) routinely delivered at antenatal clinics is effective in preventing malaria during pregnancy. Whereas, low IPTp uptake (24.0%) had been reported among pregnant women in Ebonyi State, there is paucity of studies comparing the uptake and its predictors in the urban and rural areas of Ebonyi State. We determined IPTp uptake and its predictors in the urban and rural areas of Ebonyi State.

Methods

We conducted a cross-sectional comparative study among 864 reproductive age women selected using multistage sampling. Using a structured interviewer-administered questionnaire, we collected data on respondent’s socio-demographic characteristics and IPTp uptake. Uptake was adjudged adequate if ≥3 doses were taken, otherwise inadequate. We estimated the proportion of women with adequate IPTp uptake and determined the factors associated with adequate uptake in rural and urban areas using chi square and multiple logistic regression at 5% level of significance.

Results

The mean ages of respondents in the urban and rural areas were 28.5±4.6 and 27.4±5.0 years respectively. Adequate IPTp uptake was 82.5% and 60.8% in the urban and rural respectively (p<0.001). In the urban area, women whose husbands had attained ≥ secondary education (aOR:2.9; 95%CI:1.2–7.4; p = 0.02) and those who paid for sulfadoxine/pyrimethamime (aOR:0.2; 95%CI: 0.1–0.6; p = 0.01) were 2.9 times more likely and 5 times less likely to take adequate IPTp respectively compared to respondents whose husbands had attained ≤ primary education and those who had sulfadoxine/pyrimethamine free. In the rural area, women who had attended ANC <4 times (aOR:0.4; 95%CI: 0.3–0.7; p<0.001) were 2.5 times less likely to take adequate IPTp compared to women that had attended ANC ≥4 times.

Conclusion

Uptake of IPTp was more in the urban than rural areas of Ebonyi State. Interventions that reinforce the importance of health professionals carrying out actions aimed at pregnant women and their partners (spousal) in order to guide them on preventive actions against malaria and other diseases are recommended in Ebonyi State.
Rising tension in the Himalayas: A geospatial analysis of Chinese border incursions into India
Authors: Brethouwer Jan-Tino , Fokkink Robbert , Greene Kevin , Lindelauf Roy , Tornquist Caroline , Subrahmanian V. S.
Published: November 2022

The China-India border is the longest disputed border in the world. The countries went to war in 1962 and there have been recurring border skirmishes ever since. Reports of Chinese incursions into Indian territory are now a frequent occurrence. This rising tension between the world’s most populous countries not only poses risks for global security and the world economy, but also has a negative impact on the unique ecology of the Himalayas, because of the expanding military infrastructure. We have assembled a unique data set of the dates and locations of the major incursions over the past 15 years. We find that the conflict can be separated into two independent conflicts, the western and eastern sectors. The incursions in these sectors are statistically independent. However, major incidents do lead to an increased tension that persists for years all along the entire Line of Actual Control (LAC). This leads us to conclude that an agreement on the exact location of a limited number of contested regions, such as the Doklam plateau on the China-Bhutan border, has the potential to significantly defuse the conflict, and could potentially settle the dispute at a further date. Building on insights from game theory, we find that the Chinese incursions in the west are strategically planned and may aim for a more permanent control over specific contested areas. This finding is in agreement with other studies into the expansionist strategy of the current Chinese government.