bluuebunny/crossref_metadata_2025 huggingface dataset:
Propagation phase elimination of light pulses by an initial phase-locked synchronized moving source
Authors: Lu Yao , Xiong Hao , Wu Qiang , Xu Jingjun
Published: September 2020

We demonstrate an innovative approach to eliminate the propagation phase of light pulses by designing an initial phase-locked synchronizing moving source. Counterintuitively, this result shows the propagation phase could be eliminated, for the first time.
Noise Investigation of Deep-UV Dispersive Wave Generation in Gas-Filled Fiber Utilizing Nonlinear Pulse Compression
Authors: Smith Callum R. , Moltke Asbjørn , Adamu Abubakar I. , Michieletto Mattia , Bowen Patrick , Moselund Peter M. , Markos Christos , Bang Ole
Published: September 2020

Deep-UV radiation is achieved through dispersive wave generation in an argon-filled anti-resonant fiber utilizing a nonlinearly compressed 1030nm pump. Relative intensity noise is characterized at 280nm, with 1.6% achieved for optimal argon-pressure and pump parameters.
Apodized 2D Slanted Grating Coupler for Efficient Mode Multiplexing Between Few Mode Fiber and SOI Chip
Authors: Kuo Hsuan-Ming , Hsu Yi-Jang , Chang Chih-Chi , Lai Yinchieh
Published: September 2020

We have designed an apodized 2D slanted grating coupler that can multiplex four spatial fiber modes in two polarizations (fundamental + one higher-order mode in each polarization) into the SOI waveguides with high efficiency.
Integrated optical pulse generator based on hybrid modulation induced by Franz-Keldysh effect
Authors: Zhao Wu , Li Yaobin , Wang Huan , Kan Qiang , Lu Dan , Zhao Lingjuan
Published: September 2020

An optical pulse generator is demonstrated using the amplitude/phase hybrid modulation of an integrated laser-modulator transmitter followed by chirp compression. 6-GHz optical pulse with a width of 8.27 ps is realized.
Extreme suppression of waveguide crosstalk with all-dielectric metamaterials
Authors: Mia Md Borhan , Ahmed Syed Z. , Ahmed Ishtiaque , Lee Yunjo , Qi Minghao , Kim Sangsik
Published: September 2020

We present and demonstrate an exceptional coupling in extreme skin-depth waveguides for the extreme suppression of waveguide crosstalk. The anisotropic dielectric perturbation of metamaterial claddings causes such an exceptional coupling and results in an extremely long coupling length.
Interactions between indirect excitons in separate coupled quantum wells
Authors: Choksy Darius , Butov Leonid , Norman Justin , Gossard Arthur
Published: September 2020

We report on the repulsive and attractive interactions between indirect excitons in a system of separated coupled quantum wells.
Electrically Pumped Light-emitting Device Based on MoTe2 Directly Integrated with Doped Silicon
Authors: Zhang Jianxing , Li Yongzhuo , Fu Song , Feng Jiabin , Ning Cun-Zheng
Published: September 2020

We demonstrate an electrically pumped light emitting device by integrating a monolayer MoTe2 directly on doped Silicon to form a Si-MoTe2 double heterostructure. An external quantum efficiency of ~0.65% was achieved.
Backward Cladding-Mode Coupling in Integrated Bragg Gratings on a Si3N4 Platform
Authors: Zhan Jiahao , Dagenais Mario
Published: September 2020

We present a detailed study of a parasitic effect connected to integrated Bragg gratings. An appreciable transmission drop is observed experimentally and originates from the backward cladding-mode coupling.
Nanofence Assisted Microring Resonator for Single Nanoparticle Detection with Size Selectivity
Authors: Bag Saawan Kumar , Kar Sauradeep , Sinha Rajat K , Sharma Suvanshi , Varshney Shailendra K
Published: September 2020

Two parallel coupled racetrack microring resonators assisted with photonic nanofence have been proposed. Numerical simulations demonstrate the device’s capability of detecting and quantifying sizes of single-gold nanoparticles. The approach exhibits robustness in sensing and selectivity.
Mode Splitting in Subwavelength Grating Metamaterial Ring Resonator
Authors: Li Wanxin , Chen Jiaxin , Xu Xiaochuan
Published: September 2020

In this paper, the break of rotational symmetry induced mode splitting is observed in subwavelength grating metamaterial ring resonator, which can potentially be exploited for ultrasensitive optical detection and sizing of nanoparticles and molecules.
Demonstration of Low Loss β-Ga2O3 Optical Waveguides in the UV-NIR Spectra
Authors: Zhou Jingan , Chen Hong , Fu Houqiang , Fu Kai , Deng Xuguang , Huang Xuanqi , Yang Tsung-Han , Montes Jossue A. , Yang Chen , Qi Xin , Zhang Baoshun , Zhang Xiaodong , Zhao Yuji
Published: September 2020

We report the first demonstration of beta-phase gallium oxide optical waveguides on sapphire in the ultraviolet to near-infrared spectra. A low propagation loss of 3.7 dB/cm was obtained at the wavelength of 810 nm
An Isotropic Lithium Niobate Microring Resonator with a 1.38-nm Wide Continuous Tuning Range using 80 V
Authors: Yang Yansong , Bahadori Meisam , Hassanien Ahmed E. , Goddard Lynford L. , Gong Songbin
Published: September 2020

We present simulation and experimental results for an optical microring resonator in Z-cut thin-film lithium niobate with SiO2 claddings and integrated tuning electrodes. Applying 0 to -80 V, we achieved a 1.38-nm continuous tuning range.
25 GHz soliton microcombs in high-Q Si3N4 racetrack-shaped microresonators
Authors: Ye Zhichao , Lei Fuchuan , Twayana Krishna , Girardi Marcello , Andrekson Peter A. , Torres-Company Victor
Published: September 2020

We demonstrate a 25 GHz single-soliton comb on a Si3N4 platform fabricated using a novel subtractive method. A long cavity is carefully designed to fit within the e-beam writing field while minimizing coupling to higher-order modes.
Bandwidth- and wavelength-tunable optical filter based on cascaded waveguide gratings on silicon-on-insulator
Authors: Wang Tai-Chun , Yen Tzu-Hsiang , Yu Chia-Ju , Wang Yen-Chieh , Hung Yung
Published: September 2020

A tunable optical filter based on cascaded side-lobe-free waveguide gratings allows continuous tuning of 7 nm in bandwidth through on-chip heater and 83.2 pm/oC in center wavelength through controlling environment temperature.
Two-Photon-Pumped Single-Mode Vertical Cavity Lasing Based on Perovskite Monocrystalline Films
Authors: Li Xiaohong , Liu Weiwei , Lu Peixiang
Published: September 2020

A two-photon pumped high quality single-mode vertical cavity lasing was realized. The VCSEL exhibits a remarkable low threshold of ~421 μJ/cm2, a high quality factor of ~1286 and a small divergence angle of ~ 0.5°.
2-um high-speed graphene electro-optic modulator based on silicon slot microring resonator
Authors: Luan Chao , Liu Yong , Ding Yunhong , Hu Hao
Published: September 2020

We show in simulation a 2-um graphene on silicon suspended electro-optic (E/O) modulator based on slot microring resonator working at critical coupling that shows dramatically increased speed while keeping big modulation depth.
Compact micro-ring resonator using low-loss silicon waveguide bends
Authors: Song Jeong Hwan , Kongnyuy Tangla D. , De Heyn Peter , Lardenois Sebastien , Jansen Roelof , Rottenberg Xavier
Published: September 2020

A compact micro-ring resonator composed using low-loss advanced bends is reported. The effective radius of the ring is 2.5µm. The Q of 6200, finesse of 140, FSR of 35nm and ER of 15dB have been measured.
Performance Comparison Among Silicon-based Arrayed Waveguide Grating with Rowland and Confocal Configuration
Authors: Li Z. Y. , Zou J. , Zhu H. H. , Zhang H. , Cai H. , Yang Z. C. , Jin Y. F. , Hao Y. L. , Liu A. Q.
Published: September 2020

With comparison, experimental results show that the AWG with Rowland configuration in combination with constant period along the tangent line to its grating pole for arrayed waveguides has the best cross talk
All-optical micro-ring modulator with phosphorene film
Authors: Cheng Zhao , Cao Rui , Guo Jia , Yao Yuhan , Wei Kangkang , Gao Shan , Wang Yunzheng , Dong Jianji , Zhang Han , Zhang Xinliang
Published: September 2020

We propose and experimentally demonstrate a unique phosphorene integrated photothermal modulator in telecommunication applications. The rise time and decay time are only 475 and 134 ns, and the 3 dB bandwidth is more than 2.5 MHz.
Tunable composite photonic crystal cavity on an optical nanofiber
Authors: Yalla Ramachandrarao , Hakuta Kohzo
Published: September 2020

A tunable nanophotonic cavity with a wide tunability of ±10 nm is demonstrated using an optical nanofiber. The key point of the method is to combine the optical nanofiber with a chirped-period defect-mode grating.
Dual-wavelength-band Multiplexed Grating Coupler on Multilayer SiN-on-SOI Photonic Integrated Platform
Authors: Cheng Lirong , Mao Simei , Mu Xin , Wu Sailong , Fu H.Y.
Published: September 2020

We propose and design a dual-layer grating coupler for dual-wavelength-band multiplexing on multilayer SiN-on-SOI photonic integrated platform. Its peak coupling efficiencies are -2.95 dB for O-band and -2.49 dB for C-band.
Mode Switching in a Metallic Photonic Crystal Slab
Authors: Palinski Timothy J. , Vyhnalek Brian E. , Hunter Gary W. , Tadimety Amogha , Zhang John X.J.
Published: September 2020

We demonstrate selective mode switching between substrate and superstate Fano resonances in a metallic photonic crystal slab. A maximum experimental modulation depth of ~45% was achieved for the (-1 0) superstate mode at 755 nm.
Multiphoton effects with bright squeezed vacuum
Authors: Kopylov D. A. , Spasibko K. Yu. , Cutipa P. , Murzina T. V. , Chekhova M. V.
Published: September 2020

Light generated through strongly pumped parametric down-conversion has extremely strong photon-number fluctuations and is therefore highly efficient for multiphoton effects. In addition, its spectral and spatial properties can be tailored to allow two-dimensional multiphoton spectroscopy.
The role of quantum correlations in entangled two-photon absorption
Authors: Schlawin Frank , Buchleitner Andreas , Dorfman Konstantin E. , Mukamel Shaul
Published: September 2020

The theoretical description of entangled photon absorption in complex multilevel systems undergoing dissipative dynamics is reviewed. The impact of quantum correlations on the efficiency of the absorption process and the excited state distributions is discussed.
Enhanced Two-photon Absorption Fluorescence of Fluorescein Biomarkers Using Squeezed Light Excitation
Authors: Li Tian , Li Fu , Altuzarra Charles , Classen Anton , Agarwal Girish S.
Published: September 2020

We demonstrate that by using squeezed light for two-photon absorption (TPA) of fluorescein biomarkers, a fluorescence enhancement of nearly 50 is achieved as compared to conventional TPA using coherent light.
Multi-color Three-photon Fluorescence Imaging Deep in Mouse Brain with Enhanced Cross Section
Authors: Hontani Yusaku , Xia Fei , Xu Chris
Published: September 2020

We demonstrate that excitation to a higher-energy excited state enables three-photon fluorescence signal enhancement in Texas Red. Moreover, we show multi-color three-photon fluorescence images and Ca2+ activity recording deep in mouse brain with single-wavelength excitation.
Laser Inscribed Fe:LiNbO3 Photorefractive Waveguides
Authors: Coco Michael G. , McDaniel Sean A. , Cook Gary
Published: September 2020

We utilize ultra-fast laser inscription to fabricate photorefractive type III waveguides in Fe:LiNbO3 along the crystal c-axis. We demonstrate the ability to write transmission and reflection gratings into these waveguides with losses of 2.5 dB cm-1 and 48 dB cm-1 respectively.
8192-Element Optical Phased Array with 100° Steering Range and Flip-Chip CMOS
Authors: Poulton Christopher V. , Byrd Matthew J. , Moss Benjamin , Timurdogan Erman , Millman Ron , Watts Michael R.
Published: September 2020

We present an optical phased array with a record 8192 individually-addressed elements driven by flip-chip CMOS spanning a 100° x 17° field of view. The reticle-sized PIC+CMOS beam steering engine enables near cm-scale apertures for long-range applications.
Widely Tunable, Narrow Linewidth Quantum Dot Lasers Heterogeneously Integrated on Silicon
Authors: Guo Joel , Malik Aditya , Tran Minh , Kurczveil Geza , Liang Di , Bowers John
Published: September 2020

We demonstrate widely tunable, narrow linewidth, heterogeneous QD lasers utilizing Vernier ring resonators, setting a record for integrated lasers in the O-band with 47 nm tuning range, 52 dB SMSR, and 9.5 kHz Lorentzian linewidth.
Heterogeneous Gallium-Arsenide Lasers on Silicon-Nitride
Authors: Park Hyundai , Zhang Chong , Tran Minh A. , Komljenovic Tin
Published: September 2020

We demonstrate heterogeneously integrated gallium arsenide (GaAs) on silicon nitride (SiN) lasers using wafer-scale integration operating at a wavelength below Si bandgap with high uniformity enabled by advanced lithography and optimized fabrication. The technology promises to revolutionize the fields of AR/VR and quantum technology among others.
High-resolution dual-comb gas-phase spectroscopy with a mode-locked laser on a photonic chip
Authors: Chen Z. , Van Gasse K. , Vicentini E. , Huh J. , Poelman S. , Wang Z. , Roelkens G. , Hänsch T.W. , Kuyken B. , Picqué N.
Published: September 2020

An integrated III-V-on-silicon mode-locked laser enables the first on-chip comb generator of 1.0-GHz line-spacing for direct interrogation of gas-phase narrow rovibrational transitions in molecules. Its flat-top spectrum empowers real-time multiplexed spectroscopy without any scanning elements.
Generation of pure-sextic, -octic and -decic Kerr solitons
Authors: Runge Antoine F. J. , Qiang Y. Long , Alexander Tristram J. , Hudson Darren D. , Blanco-Redondo Andrea , de Sterke C. Martijn
Published: September 2020

We report the experimental discovery of new classes of solitons arising from Kerr nonlinearity and negative sixth-; eighth-; and tenth-order dispersion. These pulses demonstrate the use of high-order dispersion for unlocking innovations in nonlinear optics.
Helicity-Dependent Coherent Spin-Phonon Oscillations in the Ferromagnetic van der Waals Crystal CrI3
Authors: Padmanabhan Prashant , Kwock Kevin W. C. , Martinez Luis M. , Tutchton Roxanne M. , Buessen Finn L. , Gilinsky Samuel , Lee Min-Cheol , Zhu Jian-Xin , Paramekanti Arun , McGuire Michael A. , Yarotski Dmitry A. , Singamaneni Srinivasa R. , Prasankumar Rohit P.
Published: September 2020

We demonstrate a significant pump helicity dependence in the amplitude of coherent Raman active phonon oscillations in the van der Waals magnet CrI3, revealing a strong non-equilibrium coupling between spin and structural order.
Controllable Generation of Structured Light Beams in a Few-mode Fiber MOPA
Authors: Lin D. , Carpenter J. , Feng Y. , Jung Y. , Alam S. , Richardson D. J.
Published: September 2020

We experimentally demonstrate the selective amplification of structured light beams with >10W of output power for ~150 picosecond pulses in a few-mode Yb-doped large mode area fiber based Master Oscillator Power Amplifier (MOPA).
Comparison of excitation methods for frequency conversion in rubidium
Authors: Zimmer Leah , Brekke Erik
Published: September 2020

We compare the effectiveness of frequency conversion using four-wave mixing in rubidium. Two-photon excitation in a ring cavity results in more output power than two-step excitation, with similar linewidth and tuneability.
Electromagnetically induced transparency of a single frequency comb mode
Authors: Krešić I. , Kruljac M. , Aumiler D. , Ban T.
Published: September 2020

We study the electromagnetically induced transparency of a single frequency comb mode interacting with a cold rubidium cloud. A A hyperfine level structure in a D2 transition is used in the configuration of co-propagated probe (frequency comb) and coupling (continuous-wave) laser fields. The experimental results are satisfactorily reproduced by the developed theoretical models.
A High Dimensional Entanglement-based Fully Connected Quantum Key Distribution Network over 100 Users
Authors: Liu Xu , Xue Rong , Yao Xin , Wang Heqing , Li Hao , You Lixing , Huang Yidong , Zhang Wei
Published: September 2020

A high-dimensional entanglement-based fully connected quantum key distribution network is proposed and demonstrated experimentally over 100 users, where a broadband entanglement photon pair source is shared by end users via wavelength and space division multiplexing.
Practical route to entanglement-enhanced communication over noisy bosonic channels
Authors: Shi Haowei , Zhang Zheshen , Zhuang Quntao
Published: September 2020

We report structured encoding and decoding schemes for entanglement-assisted classical communication in a lossy and noisy scenario. Phase encoding on the entangled two-mode squeezed vacuum is shown to be optimal and practical receivers are analyzed.
Higher-Order Interference in Quantum Mechanics Induced by Optical Nonlinearities
Authors: Rozema Lee A. , Namdar Peter , Calafell Irati Alonso , Trenti Alessandro , Dakic Borivoje , Walther Philip
Published: September 2020

It has been proven theoretically and confirmed experimentally that quantum mechanics exhibits only second-order interference. However, this makes several implicit assumptions. Here we highlight these assumptions experimentally, showing that optical nonlinearities can induce higher-order interference.
Generation of Narrow-band Photon Pairs for Solid-state Quantum Memories
Authors: Liu Jiachen , Liu Jianji , Wang Xinge , Zhang Guoquan
Published: September 2020

We achieve a narrow-band frequency-entangled photon-pair source using the cavity-enhanced spontaneous parametric down conversion. The bandwidth of photon pairs is 1.07 MHz at 605.78 nm, which could be used for Pr3+ based quantum memory.
Impact of Modulation Formats and Bandwidth on Quantum Secured 5G Optical Fronthaul over Multicore Fiber
Authors: Kong Weiwen , Sun Yongmei , Cai Chun , Ji Yuefeng
Published: September 2020

We integrate QKD system and 5G optical fronthaul based on MCF, and experimentally evaluate the performance of QKD system at different bandwidths and modulation formats of classical signals.
Measurement of two-photon position-momentum EPR-correlation by detecting single-photon correlation
Authors: Bhattacharjee Abhinandan , Jha Anand K
Published: September 2020

We propose a technique for measuring position-momentum EPR-correlation by detecting single-photon position and momentum correlation function. Our method does not involve coincidence detection for measuring EPR-correlation.
Below-threshold harmonic generation of homonuclear and heteronuclear diatomic molecules
Authors: Li Peng-Cheng , Lin Long , Chu Shih-I
Published: September 2020

We present an ab initio quantum study of the roles of the nuclear symmetry on below-threshold harmonic generation (BTHG) from homonuclear and heteronuclear diatomic molecules. We discover the intuitive electronic dynamical behaviors in molecular BTHG.
Microrefractometry and Mapping of the Local Fields by Multiparameter Fluorescence Nanoscopy of Single Molecules and Quantum Dots
Authors: Gladush M. G. , Gorshelev A. A. , Eremchev I. Yu. , Köhler J. , Kador L. , Naumov A. V.
Published: September 2020

We introduce a novel experimental approach for mapping the effective local value of the refractive index in solid films and the analysis of related local-field enhancement effects using imaging and spectroscopy of single quantum emitters.
A Tunable Fabry-Perot Cavity Stabilized by a Connected Shearing Interferometer
Authors: KC Raju B. , Nichols Cainan , Lee Jaxon , Flagg Edward B.
Published: September 2020

A spectrometer is insufficient to resolve all emission lines from a single quantum dot. A custom-made Fabry-Perot Interferometer mechanically linked to an actively stabilized Shearing Interferometer is used as a stable and tunable narrow-band filter.
Fabrication of waveguide-integrated suspended chalcogenide glass microdisk resonator
Authors: Zhu Ying , Wan Lei , Yang Zelin , Chen Zhenshi , Song Jingcui , Xia Di , Zeng Pingyang , Zhang Mingjie , Zhang Bin , Li Zhaohui
Published: September 2020

We have demonstrated a waveguide-integrated suspended Geii.5As24Se64.5 microdisk with intrinsic quality factor of 1*106, which is the highest figure, to the best of our knowledge, with respect to reported thus far in suspended chalcogenide resonators.
Flattened chromatic dispersion and birefringence properties of chalcogenide all-solid hybrid microstructured optical fibers
Authors: Tong Hoang Tuan , Nguyen Hoa Phuoc Trung , Suzuki Takenobu , Ohishi Yasutake
Published: September 2020

We proposed new chalcogenide all-solid hybrid microstructured optical fibers which provide flattened normal chromatic dispersion over a wide range from 4.5 to 13 pm and high phase birefringence up to 2.5x10-3 at 12 pm.
Tuning the Optical Signature of Few-Layer M0S2 on Silicon Substrate using Mechanical Nano-Stamping Approach
Authors: Dushaq Ghada , Mishra Pawan , Rasras Mahmoud
Published: September 2020

Spatially modulated biaxial tensile strain in a few-layers M0S2 on pre-patterned Si substrate is demonstrated. Using depth-controlled nanoindentation, localized strain on Si is achieved. Results are verified by observing shifts in the MoS2’s bandgap and phonon modes.
All-optical light control in MXene-deposited microfiber knot resonator
Authors: Wu Q. , Zhang M. , Wang Y. , Huang W. , Zheng Z. , Zhang H.
Published: September 2020

We report an efficient all-optical modulator based on a MXene-deposited microfiber knot resonator, generating a phase modulation with a conversion efficiency of 0.196 n/mW and an all-optical switch of ~306 gs.
Effect of Perturbation on Vector Field Singularities
Authors: Arora Gauri , Senthilkumaran P.
Published: September 2020

Polarization singular points are points of dislocations in azimuth of polarization ellipse. We demonstrate here disintegration of vector field singularities into ellipse field singularities by means of perturbation followed by index and helicity conservation rules.
Facile Patterning of Hybrid Perovskite Metasurfaces for Opto-Electronic Applications
Authors: Kessel Amit , Frydendahl Christian , Indukuri S.R.K Chaitanya , Mazurski Noa , Levy Uriel
Published: September 2020

We demonstrate a soft lithography method for patterning large area metasurfaces onto hybrid Perovskite thin films and show enhanced optical extinction with the goal of improving the efficiency of thin films photodetectors and solar cells.
Chalcogenide cylindrical helix nanocollumnar thin films for switchable polarization effects
Authors: Burrow Joshua A. , Sarangan Andrew , Zhan Qiwen , Agha Imad
Published: September 2020

Phase change material Ge2Sb2Te5 tilted and helical nanorods films featuring 25 nm diameters are grown using the oblique and glancing angle deposition techniques. We provide insights on the growth process, structural integrity and optical responses.
High-voltage Sensor Based on Fiber Bragg Grating in Fibers with Electrodes
Authors: Pereira J. M. B. , Sartiano D. , Hervas J. , Barrera D. , Madrigal J. , Sales S. , Laurell F. , Tarasenko O. , Margulis W.
Published: September 2020

This work describes the use of FBGs inscribed in optical fiber with electrodes for voltage sensing. The results show a quadratic voltage dependence. The device can be explored for a multipoint, single-ended voltage sensing device.
Preliminary analysis of the laser polishing process by high-speed thermographic visualization
Authors: Beyfuss Jack , Bordatchev Evgueni V. , Tutunea-Fatan O. Remus
Published: September 2020

A method for visualization and monitoring of the laser polishing was developed using high-speed thermographic imaging. The preliminary analysis demonstrates correlation with different LP parameters suitability to process deep learning, optimization and control.
Toward Stable Room-Temperature Polaritonic Devices
Authors: Cao Yumeng , Bulovic Vladimir
Published: September 2020

Self-assembled organic molecules of cyanine dye are proposed for room-temperature, low-cost scalable polaritonic devices after first result of stabilized photoluminescence of solid-state film and polariton emission from metallic microcavities achieved through integration of hygroscopic stabilizers.
Optical Vortex Interactions Depend on Core Structure
Authors: Andersen Jasmine M. , Voitiv Andrew A. , Lusk Mark T. , Siemens Mark E.
Published: September 2020

We elucidate the impact of optical vortex structure on pair coupling and two-body dynamics. Vortices with hyperbolic tangent cross-sections are found to have reduced coupling strength as evidenced by slowed annihilation between oppositely charged pairs.
Photonic Recurrent Neural Networks with Gating Circuit
Authors: Dabos George , Mourgias-Alexandris George , Totovic Angelina , Passalis Nikolaos , Tefas Anastasios , Pleros Nikos
Published: September 2020

We experimentally demonstrate the first all-optical Recurrent-Neural-Network (RNN) with a gating circuit and a sigmoid activation unit. By introducing a gating circuit to the RNN we implemented the “forget” function, resembling an all-optical Gated-Recurrent-Unit (GRU).
The Efficiency of Medical Volume Data Processing Using Virtual Reality
Authors: Pomianek M. , Piszczek M. , Maciejewski M.
Published: September 2020

The paper shows pilot studies aimed at examining the effectiveness of volumetric data processing in a virtual environment compared to standard solution. The speed and accuracy of the users' actions in the environments were analyzed.
On-chip Distinguishable Beam Splitter of Both Spin & Orbital Angular Momentum of Light with Plasmonic NanoSlits Array
Authors: Zhao Xuesi , Feng Xue , Huang Yidong
Published: September 2020

An on-chip beam splitter of both spin & orbital angular momentum of light has been proposed and demonstrated while the generated plasmonic beam is elaborately modulated to achieve non-diffracting propagation for optimal discrimination.
Enhanced Emission from Ultra-Thin Long Wavelength Infrared Superlattices on Epitaxial Plasmonic Materials
Authors: Simmons E. , Nordin L. , Li K. , Briggs A. , Bank S. , Wasserman D. , Podolskiy V.A.
Published: September 2020

We demonstrate an order of magnitude enhancement of emission from mid-infrared emitters monolithically integrated with semiconductor designer metals relative to the same emitters on dielectric substrates and provide theoretical explanation of the observed phenomena.
Surface Phonon Polariton Modes in Zinc Oxide Nanoparticles
Authors: Khan Irfan , Howell Caroline , McGinnity Tracie , Roeder Ryan K. , Hoffman Anthony J.
Published: September 2020

We characterize two phonon polariton modes in ZnO nanoparticles, as well as strong absorption at frequencies near an infrared-silent phonon mode, suggesting that disruption of symmetiy in the ciystal lattice may be activating this mode.
Generation of Arbitrary Longitudinal Polarized Optical Field Under Tight Focusing Condition
Authors: Zhang Guan-Lin , Tu Chenghou , Li Yongnan , Wang Hui-Tian
Published: September 2020

We propose a method to realize the customized longitudinal polarized field in the tight focusing system. This method includes a modulated Fourier transform, so the Gerchberg-Saxton algorithm can also be used to perform complex designs.
Upmost Efficiency Mid IR Thin HgCdTe Photodetectors
Authors: Avrahamy Roy , Zohar Moshe , Auslender Mark , Hava Shlomo , Milgrom Benny , Shikler Rafi
Published: September 2020

A new resonant-cavity photodetector architecture, where mirrors are surrogated by grating-patterned meta-surfaces is suggested. We show by design that thus structured, sub-10pm thick mid-IR photodetectors, with 75nm thick HgCdTe photo-absorber, can attain unsurpassable peak efficiency.
Integration of Angle Independent CMY Nanorod Colour Filter mosaic on CMOS Image Sensor
Authors: He Xin , Liu Yajing , Uddin Hemayet , Nirmalathas Ampalavanapillai , Unnithan Ranjith Rajasekharan
Published: September 2020

The paper presents a polarization independent and incident angle insensitive CMY colour filter mosaic made of nanorods with high transmission suitable for integration on a CMOS sensor for making CMY cameras.
Observation and nonlinear optical probing of flat band states in high-Q dielectric metasurfaces
Authors: Okhlopkov Kirill I. , Antropov Ilya M. , Nazarenko Alyona A. , Shcherbakov Maxim R. , Bessonov Vladimir O. , Rubtsov Alexey N. , Shvets Gennady , Fedyanin Andrey A.
Published: September 2020

We experimentally observe flat band states in high-Q dielectric metasurfaces and employ them to enhance third harmonic generation.
Observation of Directional Surface Plasmon Polariton Scattering by Single Low-index Dielectric Nanoparticles
Authors: Sun Xuqing , Liu Hongyao , Jiang Liwen , Wei Ruxue , Wang Chang , Lu Xinchao , Huang Chengjun , Evlyukhin Andrey B.
Published: September 2020

The directional scattering in low-index dielectric nanoparticles is hard to detect, as the multipole resonances are weak. With surface plasmon polariton (SPP) induced multipole moments, we observed the directional SPP scattering by single polystyrene nanoparticles.
Transition Metal Nitride as a Plasmonic Material for Tamm Plasmon States
Authors: Kumar Samir
Published: September 2020

Tamm plasmon polaritons (TPP) modes localized at the interface of distributed Bragg reflector (DBR) and Titanium Nitride (TiN) films are investigated. Impact of TiN thickness on TPP modes is carried out using Transfer matrix method.
Mirrored Plasmonic Filter Design via Active Learning of Multi-Fidelity Physical Models
Authors: Song Jialin , Tokpanov Yury S. , Chen Yuxin , Fleischman Dagny , Fountaine Katherine T. , Yue Yisong , Atwater Harry A.
Published: September 2020

We designed mirrored plasmonic filters using an advanced active machine learning algorithm that efficiently explores multiple physical models with different approximation fidelities and costs. This method is applicable to a variety of nanophotonics optimization problems.
Tunable Transparency and Slow Light in Plasmonic Lattice
Authors: Michaeli Lior , Suchowski Haim , Ellenbogen Tal
Published: September 2020

We experimentally and numerically demonstrate an induced tunable transparency windows and slow light at the localized plasmon band via collective coherent scattering at the surface of plasmonic nanoparticle lattice.
Joint Equalization of CD and RSOP Using a Time-frequency Domain Kalman Filter Structure in Kramers-Kronig Receivers
Authors: Hu Leiya , Li Xue , Zhang Qi , Zhang Xiaoguang , Xi Lixia
Published: September 2020

We propose a joint equalization scheme for CD and RSOP in KK receivers based on a time-frequency domain Kalman filter, which has strong tolerance to accumulated CD (more than 2040ps/nm) combined with 2Mrad/s RSOP.
Four-Color LD+LED Lighting Module for 30-Gbps Visible Wavelength Division Multiplexing Data Transmission
Authors: Cheng Chih-Hsien , Wu Yi-Chien , Tsai Cheng-Ting , Wang Huai-Yung , Lin Gong-Ru
Published: September 2020

A red/green/violet-LD and yellow-LED based four-color white-lighting module is employed for free-space visible wavelength division multiplexing (VWDM) data transmission at 30 Gbps with using the bit-loaded discrete multi-tone (DMT) data format.
10 Gbps single pLED Visible Light Communication with PAPR Reduction and Bit-Power Allocation
Authors: Li Ming-Wei , Yan Jhih-Heng , Chen Chien-Ju , Huang Pin-Chao , Chen Kai-Chia , Liao Mengzhe , Feng Kai-Ming , Wu Meng-Chyi
Published: September 2020

A 520-nm GaN green gLED-based for visible light communication is experimentally demonstrated. By optimizing the PAPR and bit-power allocation of QAM-OFDM signals, the capacity achieves 10.05 Gbps with single gLED over air transmission.
448-Gb/s PAM4 FSO Communications Utilizing Polarization-Multiplexed Injection-Locked VCSELs with 500-m Free-Space Link
Authors: Huang Qi-Ping , Huang Yong-Cheng , Xie Jing-Yan , Tsai Song-En , Huang Xu-Hong , Li Chung-Yi , Lu Hai-Han
Published: September 2020

We demonstrate a 448-Gb/s PAM4 FSO communication utilizing polarization- multiplexed injection-locked VCSELs with 500-m free-space link. Combining PAM4 and polarization-multiplexed scenarios, the channel capacity is greatly increased. It develops a framework for providing high-transmission-rate.
Cross-Phase Modulation Based Wavelength Multicasting Using a Single High-Repetition-Rate Pulsed Pump Generated from the Temporal Talbot Effect
Authors: Zhang Honghui , Xie Qijie , Shu Chester
Published: September 2020

We demonstrate wavelength multicasting enabled by multiplied 50-GHz optical pulses through cross-phase modulation. The maximum difference in optical signal-to-noise ratio sensitivity among the central 11 channels is less than 1.1 dB at the HD-FEC threshold.
Generation of cylindrical vector beams with adjustable diffraction pattern in the focal plane
Authors: Craciun Alexandra , Dascalu Traian
Published: September 2020

We designed and analyzed an optical component that works as a radially symmetric wave-plate and an associated optical system to control the polarization state of the beam, which as a consequence, change the shape of the focal spot.
Generation of 14.0 W of single frequency light at 770 nm by intracavity frequency doubling
Authors: Kwon Minho , Huft Preston , Young Christopher , Ebert Matthew , Saffman Mark , Yang Peiyu
Published: September 2020

We report on the first high power, high efficiency frequency doubling of a 1540 nm laser using an enhancement cavity and LBO crystal.
Ion-exchanged Waveguides in Periodically Poled Rb-doped KTiOPO4 for Efficient Second Harmonic Generation
Authors: Mutter Patrick , Kores Cristine C. , Laurell Fredrik , Canalias Carlota
Published: September 2020

We present the fabrication of channel waveguides in PPRKTP crystals for QPM SHG in the blue region. Our waveguides reached a normalized conversion efficiency of 119 %/Wcm2 and showed low loss (0.51dB/cm).
Observation of 2D Spatiotemporal Rogue Events in a Quadratic Nonlinear Medium
Authors: Jauberteau Raphael , Tonello Alessandro , Baronio Fabio , Krupa Katarzyna , Mllot Guy , Wetzel Benjamin , Wabnitz Stefan , Couderc Vincent
Published: September 2020

We experimentally demonstrate 2D quadratic extreme events, appearing and disappearing without a trace. Besides the spontaneous formation of self-guided bicolor solitary waves, ultrafast spatial switching, cascaded events and pulse reshaping are observed.
Optical Parametric Amplification at 10.6 pm in GaSe Pumped by a 2.75-pm Parametric Source
Authors: Xiao Xuan , Nees John , Huang Hao , Galvanauskas Almantas , Jovanovic Igor
Published: September 2020

Small-signal parametric gain at 10.6 pm in GaSe crystal pumped at 2.75 pm is experimentally demonstrated. Simulation predicts that nanosecond optical parametric chirped-pulse amplification in GaSe supports sub-three-cycle pulses.
High speed vocal fold imaging using smartphone-based laryngoscope: A preliminary study
Authors: Kim YoungKyu , Oh Jeongmin , Choi Seung-ho , Jung Ah Ra , Lee Yoon Se , Lee June-Goo , Kim Jun Ki
Published: September 2020

In recent, performances of smartphones are highly developed and they can acquire high resolution image with high framerates. The objective of this study is the development of smartphone-based laryngoscope to reduce the cost of device and demonstrate possibility of highspeed vocal cord imaging by utilizing high performance smartphone camera. We designed customized smartphone adapter for combining clinical laryngoscope and Samsung smartphone. By attaching conventional clinical probes into our customized smartphone adaptor• the high-speed vocal cord endoscopic images were acquired. We could confirm the high-speed digital images of 940fps were acquired from 5 healthy volunteers as a preliminary study.
Yb-fiber-pumped MgO:PPLN-based picosecond optical parametric oscillator tunable across 1.3-1.5 pm
Authors: Nandy Biplob , Kumar S. Chaitanya , Ebrahim-Zadeh M.
Published: September 2020

We report the generation of high-average-power high-repetition-rate picosecond pulses across 1305-1540 nm by internal frequency-doubling of an idler-resonant MgO:PPLN picosecond optical parametric oscillator in fanout MgO:PPLN pumped by Yb-fiber-laser at 1.064 pm.
Rapidly Tunable Continuous-wave Green-pumped Optical Parametric Oscillator Based on Fanout MgO:PPLN
Authors: Sukeert  , Kumar S. Chaitanya , Ebrahim-Zadeh M.
Published: September 2020

We report a green-pumped continuous-wave OPO using a fanout-grating MgO:PPLN, tunable across 813-1032 nm (signal) and 1098-1539 nm (idler) with >30% extraction efficiency in excellent beam-quality and power stability better than 3% rms over 1 hour.
Nonlinear Optical Wavelength Conversion System from the C-Band to the Mid-Infrared
Authors: Alamgir Imtiaz , St-Hilaire François , Rochette Martin
Published: September 2020

We demonstrate an all-fiber system that performs nonlinear wavelength conversion from a wavelength of 1.550 pm to 2.300-2.640 pm. This spectral shift >80 THz is achieved thanks to a combination of silica and chalcogenide fibers.
Chirp-Assisted Sum Frequency Generation of Over 200 THz from Near-Infrared to Visible
Authors: Fredrick Connor , Kowligy Abijith , Diddams Scott
Published: September 2020

Sum frequency generation (SFG) with short pulses requires phase matching as well as temporal overlap across broad bandwidths. We introduce a chirp assisted SFG technique for the efficient transfer of over 200 THz of supercontinuum from the near infrared (NIR) to the visible.
Universal Conversion Efficiency Scaling with Free-Spectral-Range for Soliton Kerr Combs
Authors: Jang Jae K. , Okawachi Yoshitomo , Ji Xingchen , Joshi Chaitanya , Lipson Michal , Gaeta Alexander L.
Published: September 2020

We experimentally and theoretically investigate the dependence of the pump-to-comb conversion efficiency of soliton Kerr combs on the cavity free-spectral-range and determine that three different regimes exist with distinct scaling behavior.
Double-Resonant Sum-Frequency Generation of Blue Light with Near-Unity Quantum Conversion Efficiency
Authors: Kerdoncuff Hugo , Christensen Jesper B. , Brasil Tulio B. , Novikov Valeriy A. , Polzik Eugene , Hald Jan , Lassen Mikael
Published: September 2020

We demonstrate double-resonant sum-frequency generation of coherent blue light in a bow-tie cavity with record high quantum conversion efficiency of 95% of mode-matched nearinfrared photons and a high output beam quality.
Surface Nanoscale Axial Photonics (SNAP) Microresonator: A New Platform for Quantum Frequency Conversion and Squeezing Generation
Authors: Hamidfar Tabassom , Kumar Prem
Published: September 2020

We introduce a new approach for quantum frequency conversion of narrowband optical signals by four-wave mixing in a surface nanoscale axial photonics (SNAP) microresonator. We also discuss a SNAP-based scheme for generating amplitude-squeezed light.
Compact All-fiber Mode-locked Laser at 1.8 pm for Three-photon Imaging
Authors: Wen X. , Sun Y. , Qiao T. , Lin W. , Wei X. , Yang Z.
Published: September 2020

We demonstrate a compact all-fiber mode-locked ultrashort pulse laser at 1.8 pm. This cost-effective pulsed laser is expected to be promising for deep-brain multiphoton imaging at the third near infrared optical tissue window.
Development of ultraviolet down conversion filters based on scattering filter materials
Authors: Zhu Junfeng , Sakai Ryo , Zhao Chenxi , Yoshioka Hiroaki , Morita Kinichi , Oki Yuji
Published: September 2020

We proposed a novel ultraviolet down conversion filter. It is mainly fabricated based on our scattering filtering materials that can show transparency at specific ultraviolet wavelength owing to refractive index matching.
Sampling and Scrambling in Compressive Sensing Based Spectral Domain Optical Coherence Tomography
Authors: Uttam Shikhar
Published: September 2020

Compressed sensing-based sampling and scrambling strategies for spectral-domain optical coherence tomography are presented and their performance evaluated. It is shown that the latter can be used for reconstructing both spatially sparse and non-sparse signals.
A Self-referencing Digital Error Correction Method for Dual-comb Interferometer
Authors: Yu Haoyang , Ni Kai , Zhou Qian , Li Xinghui , Wang Xiaohao , Wu Guanhao
Published: September 2020

We present a self-referencing digital error correction method for dual-comb interferometry. Fully mutual coherence of a dual-comb interferometer is reconstructed and 1 Hz theoretical linewidth in 1 second acquisition time is achieved.
Tunable and stabilized short cavity Brillouin fiber ring laser for BOTDA sensing
Authors: Rossi Leonardo , Marini Diego , Bastianini Filippo , Bolognini Gabriele
Published: September 2020

In this work we present a novel Brillouin Ring-Laser (BRL) source for Brillouin optical timedomain analysis (BOTDA) based on a short cavity and active stabilization scheme, presenting low RIN, narrow linewidth and high frequency stability.
Single-Photon Counting Laser Ranging with an ElectroOptic Dual-Comb Interferometer
Authors: Xu Bo , Ren Xinyi , Fei Qilai , Liang Yan , Yan Ming , Wang Xiaoyue , Zeng Heping
Published: September 2020

We explore the potential of combining dual-comb interferometry with single-photon detection and counting technologies for precise time-of-flight relative distance measurements with two asynchronous 25-GHz line-spacing combs at the single-photon level.
Terahertz compressive imaging directly in the time domain
Authors: Zanotto Luca , Piccoli Riccardo , Dong Junliang , Caraffini Diego , Morandotti Roberto , Razzari Luca
Published: September 2020

We exploit a single-pixel imaging approach to obtain multi-dimensional (space, time/frequency) images at terahertz frequencies by reconstructing the temporal waveform in each pixel. Moreover, we apply compressive sensing to reduce the acquisition time.
Time-resolved Thermoreflectance Imaging for Mid-infrared Quantum Cascade Laser
Authors: Wang Siyi , Xu Chao , Duan Fei , Wen Boyu , Rassel SM Shazzad , Wasilewski Zbigniew , Wei Lan , Ban Dayan
Published: September 2020

Time-resolved thermal imaging profile of mid-infrared quantum cascade laser was achieved by using 50 ns temporal resolution, observing temperature increase of 36.8% in the first 100 ns with subsequent decrease of 63.2% at Td=1.5 ps.
High-energy multicycle terahertz pulse generation in a bulk lithium niobate crystal
Authors: Jang Dogeun , Kang Chul , Lee Seong Ku , Sung Jae Hee , Kim Ki-Yong
Published: September 2020

We demonstrate 0.71-mJ multicycle terahertz pulse generation at 14.8 THz from a bulk lithium niobate crystal with 80 TW femtosecond laser pumping. This terahertz radiation arises from large-area, phase-matched, optical rectification in lithium niobate.
On-Wafer Metrology for a Transmission Line Integrated Terahertz Source
Authors: Smith Kassiopeia , Bosworth Bryan , Jungwirth Nicholas , Cheron Jerome , Orloff Nathan , Long Christian , Williams Dylan , Chamberlin Richard , Quinlan Franklyn , Fortier Tara , Feldman Ari
Published: September 2020

We developed a measurement system that combines on-wafer metrology and high-frequency network analysis to characterize the response of transmission-line integrated Er-GaAs and InGaAs photomixers up to 1 THz to support the telecommunication and electronics industry.
On-Chip Multi-Beam Emitting Optical Phased Array for Wide-Angle LIDAR
Authors: Liu Yaqi , Hao Zhibiao , Wang Lai , Wang Jian , Yu Jiadong , Xiong Bing , Sun Changzheng , Li Hongtao , Han Yanjun , Luo Yi
Published: September 2020

A multi-beam emitting optical phased array for LIDAR with wide angle of coverage is proposed and simulated, providing a 11*7 beam array with a static angular range of 68.8° × 39.7° and steerable in 6.5°.
Highly sensitive bending sensor based on a tapered hollow core microstructured optical fiber
Authors: Zheng Yu , Shum Perry Ping , Liu Shuhui , Ni Wenjun , Luo Yiyang , Wang Guanghui , Li Baocheng , Wang Chenlu , Wu Zhifang , Auguste Jean-Louis , Humbert Georges
Published: September 2020

We develop an in-line bending sensor based on a tapered hollow core microstructured optical fiber, which paves a promising way for improving the sensing sensitivity. Accordingly, the bending sensitivity is up to 34.2 nm/m-1.
Broadening frequency response of distributed sparse- wideband vibration sensing via time-division multifrequency sub-Nyquist sampling
Authors: Qu Shuai , Zhao Zhigang , Xu Yanping , Liu Zhaojun , Cong Zhenhua , Wang Shang , Li Zhao , Wang Heng , Qin Zengguang
Published: September 2020

A sub-Nyquist sampling sequence with an average repetition rate less than 5-kHz can be efficiently utilized to detect 24-kHz sparse-wideband vibration signal along 4.5-km sensing fiber and recover its frequency information via compressive sensing technique.
Baseline Correction and Denoising of Raman Spectra by Deep Residual CNN
Authors: Kung Bo-Han , Huang Chiu-Chang , Hu Po-Yuan , Lo Shao-yu , Lee Cheng-Che , Yao Chia-Yu , Kuan Chieh-Hsiung
Published: September 2020

A practical deep residual CNN model for the improvement of Raman spectral analysis is proposed in this work. Through the feature transformation in the deep residual blocks, it successfully denoises and precisely corrects the baseline.
High-Power Broadband Dual Comb Spectroscopy in the Mid Infrared
Authors: Kerber Grace C. , Lee Kevin F. , Zhou Gengji , Cassinerio Marco , Jiang Jie , Fermann Martin E. , Cundiff Steven T.
Published: September 2020

We present results of directly measured acetone absorption in the mid infrared using high-powered broadband dual comb spectroscopy. The technique developed is applicable to a wide variety of systems with mid infrared spectral features.
3 GHz All-fiber Dual Optical Frequency Combs at 2.0 pm for High-speed Spectroscopic Applications
Authors: Qiao T. , Wen X. , Wu J. , Lin W. , Wei X. , Yang Z.
Published: September 2020

We demonstrate dual frequency combs in all-fiber architecture that so far have the highest fundamental repetition rates (FRRs) of 3 GHz at 2.0 pm. An FRR difference of 1.5 MHz enables an ultrafast spectroscopic detection.
Surface Plasmon Resonance Biosensor with Coated Graphene Oxide Embedded in a Microfluidic Chip
Authors: Yang Zhao , Xia Li , Li Wei , Li Gangmin , Li Zhiyuan , Li Zhengran , Wang Jinmin
Published: September 2020

An MMF-OHSC-MMF SPR sensor with coated GO/Au film is presented and available for microfluidic chips. Our proposed sensor has advantages of high BSA concentration sensitivity (6.29 nm/(mg/ml)), low sample consumption and robust.
Reconfigurable Low-SWaP Eye-safe LiDAR based on Static Unitary Detector (STUD) Technology
Authors: Mheen Bongki , Han Munhyun , Choi Gyudong , Seo Hongseok , Baek Yongsoon
Published: September 2020

A reconfigurable and cost-efficient Eye-safe LIDAR transceiver architecture is proposed and implemented based on Static Unitary Detector (STUD) technology where time- of-flight (TOF) is measured using a stationary receiver and a scanning transmitter.
Sub-fm/Hz1/2 displacement measurement on MgF2 whispering gallery mode microcavity
Authors: Jang Yoon-Soo , Lim Jinkang , Wang Wenting , Flores Jaime Flor , Kim Seung-Woo , Savchenkov Anatoliy , Matsko Andrey B. , Wong Chee Wei
Published: September 2020

We present sub-fm/Hz1/2 displacement measurement on the MgF2 whispering gallery mode microcavity. We analyze power spectral density of the displacement from 1 Hz to 100 kHz of the Fourier offset frequency.
Optical Frequency Discriminator based on Polarization- Maintaining Fiber Bragg Gratings
Authors: Barot Dipen , Duan Lingze
Published: September 2020

A novel, fiber-optic optical frequency discriminator (OFD) based on polarization- maintaining fiber Bragg grating is demonstrated. Bias-free linear frequency discrimination with an efficiency of 3.248 V/nm over ~0.2 nm range is demonstrated by employing polarization-assisted balanced detection.
Measurement of Photon Statistics with Live Photoreceptor Cells
Authors: Krivitsky Leonid A.
Published: September 2020

We study responses of live retinal photoreceptors to light sources with different photon statistics. We show the ability of the cells to discriminate between the sources, down to the level of single photons.
Single-emitter-sensitivity in flow cytometry verified by quantum measurement
Authors: Sabines-Chesterking Javier , Burenkov Ivan A. , Polyakov Sergey V.
Published: September 2020

We demonstrate single quantum emitter sensitivity in a flow cytometer by measuring the second order correlation function to be g®( 0)= 0.5(1).