bluuebunny/crossref_metadata_2025 huggingface dataset:
Ultra-Broadband Single-Branch Optical Frequency Comb Using a Periodically Poled Lithium Niobate Waveguide
Authors: Yoshii Kazumichi , Hong Feng-Lei , Yasui Takeshi , Minoshima Kaoru , Kuse Naoya
Published: September 2020

We generate a broadband frequency comb using a PPLN WG in a single-branch configuration and simultaneously measure the carrier-envelope-offset frequency and the beat note with a CW laser at 1.56 pm with sufficient signal-to-noise ratio.
Suppression of Avoided Mode Crossing in High-Index- Contrast AlGaAs-on-Insulator Microresonators
Authors: Kim Chanju , Zheng Yi , Yvind Kresten , Pu Minhao
Published: September 2020

We report the suppression of avoided-mode-crossing induced by polarization mode-coupling in a high- index-contrast AlGaAs-on-insulator microresonator. An avoided-mode-crossing-free TE-mode anomalous- dispersion microresonator is demonstrated by reducing the cavity lifetime of the coupled TM mode.
Liquid Crystal Based Active Phase Modulator for Silicon Nitride Photonics Circuits at Near-Infrared
Authors: Sundar K. John , Marinins A. , Figeys B. , Jansen R. , Rottenberg X. , Kula P. , Beeckman J. , Dahlem M. S. , Soussan P.
Published: September 2020

We demonstrate for the first-time voltage driven phase modulation with liquid crystal on SiN photonics at 874nm wavelength. We report a V*Ln 0.72 V. cm with a loss of 1.8 dB/cm.
Femtosecond laser writing of near-surface waveguides for refractive-index sensing
Authors: Khalil Alain Abou , Lalanne Philippe , Bérubé Jean-Philippe , Danto Sylvain , Cardinal Thierry , Petit Yannick , Vallée Réal , Canioni Lionel
Published: September 2020

Using femtosecond laser writing technique, near-surface waveguides with no need for additional processing were written in silver-containing glasses. An ultra-sensitive refractive index sensor exhibiting a novel double-wing feature is manufactured in a 1 cm glass chip.
Passive Thermal Homeostasis using Vanadium Dioxide Thin Films
Authors: Morsy Ahmed M. , Barako Michael T. , Jankovic Vladan , Wheeler Virginia D. , Knight Mark , Papadakis Georgia , Sweatlock Luke A. , Hon Philip W.C. , Povinelli Michelle L.
Published: September 2020

Thermal homeostasis is a biological term that describes the process warm-blooded animals use to maintain constant body temperature. We present an experimental demonstration of a radiative solid-state analogous system that passively regulates its temperature in response to a dynamic thermal environment.
Imaging light-induced phase separation dynamics of inorganic halide perovskites
Authors: Peng Siying , Meng Andrew , Tan Wanliang , Braun Michael , Saini Balreen , Severson Kayla , Marshall Ann , McIntyre Paul C.
Published: September 2020

We synthesized inorganic halide perovskite films. We report the kinetics of light induced phase separation of halide perovskites by photoluminescnence characterization. Length scale of the phase separation is studied by X-ray diffraction and cryo-TEM.
Versatile Figure-9 Design: How to Access Low-Noise Regimes in an All-PM Yb:Fiber Laser
Authors: Mayer Aline S. , Fellinger Jakob , Grosinger Wilfrid , Winkler Georg , Perner Lukas W. , Heyl Christoph M. , Hartl Ingmar , Heckl Oliver H.
Published: September 2020

We present a versatile all-PM Yb:fiber-laser and demonstrate the impact of dispersion engineering on amplitude/phase noise and the carrier-envelope-offset frequency, whose linewidth can be reduced from several MHz down to single-digit-kHz values in free-running operation.
Near Infrared Ultra-Narrow-Linewidth Laser
Authors: Lai Yu-Hung , Love Stuart , Savchenkov Anatoliy , Eliyahu Danny , Moss Robert , Matsko Andrey , Williams Skip
Published: September 2020

We report on self-injection-locked near infrared laser technology using whisper-gallery-mode resonators. The laser linewidth is suppressed by 104 and has an instantaneous linewidth in the sub-10 Hertz range. The laser is used for generating stable reference light for atomic clocks.
Integrated Photonic Interposers for Processing Octave-Spanning Microresonator Frequency Combs
Authors: Rao Ashutosh , Moille Gregory , Lu Xiyuan , Sacchetto Davide , Geiselmann Michael , Zervas Michael , Papp Scott , Bowers John , Srinivasan Kartik
Published: September 2020

We demonstrate multiple silicon-nitride nanophotonic elements for on-chip processing of octave-spanning microresonator frequency combs. Dichroic filters, multimode interferometers, and tunable add-drop microring filters are shown along with soliton microcombs generated on a bilayer photonic chip.
Photonic Integrated Circuits for Precision Spectroscopy
Authors: Fridlander Joseph , Rosborough Victoria , Sang Fengqiao , Nickerson Michael , Chen Jeffrey , Numata Kenji , Verrinder Paul , Gambini Fabrizio , Pinna Sergio , Kawa Stephan , Stephen Mark , Coldren Larry , Klamkin Jonathan
Published: September 2020

A dual-laser indium phosphide photonic integrated circuit for precision spectroscopy lidar was designed and fabricated. A stabilization experiment demonstrated a twentyfold improvement in the long-term frequency stability of the master laser.
Optical Frequency Comb Generation in Silicon by Recursive Electro-Optic Modulation
Authors: Idjadi Mohamad Hossein , Arab Shermin , Aflatouni Firooz
Published: September 2020

On-chip optical frequency comb generation using recursive electro-optic modulation is demonstrated. The chip, fabricated on IME 180 nm SOI process, is used to generate a 120 GHz wide frequency comb with 10 GHz tooth-spacing.
Broadband Optical Fiber-Facet Silicon Pressure Sensor
Authors: Lorenzo Simon , Wong Yu-Po , Solgaard Olav
Published: September 2020

A buried photonic element fabrication technique is used to create a broadband optical fiber-facet absolute pressure sensor in a 1 50 /i m wide by 5 /im thick crystalline silicon disk with 50 /iatm pressure resolution at 1 atm.
Parallel Fault-Tolerant Programming and Optimization of Photonic Neural Networks
Authors: Pai Sunil , Williamson Ian A. D. , Minkov Momchil , Hughes Tyler W. , Solgaard Olav , Fan Shanhui , Miller David A. B.
Published: September 2020

We propose and numerically demonstrate a fault-tolerant, efficient parallel nullification protocol to program and error-correct photonic neural networks for energy- efficient machine learning tasks.
Efficient terahertz and Brunei harmonic generation from air plasma with femtosecond two-color mid-infrared lasers
Authors: Jang Dogeun , Schwartz Robert M. , Woodbury Daniel , Griff-McMahon Jesse , Younis Abdurrahman H. , Milchberg Howard M. , Kim Ki-Yong
Published: September 2020

We report the generation of coherent radiation from terahertz to ultraviolet via two- color mid-infrared laser mixing in air. We achieve laser-to-terahertz conversion efficiency of ~1%, 10~100 times greater than those obtained with 800 nm lasers.
Terahertz Emission Spectroscopy as Contactless Ultrafast Detection for Room-temperature 2D Magnetic Materials
Authors: Chen Xinhou , Wang Hangtian , Wei Gaoshuai , Nie Tianxiao , Wu Xiaojun
Published: September 2020

Room-temperature Fe3GeTe2-Bi2Te3 heterostructures have been systematically investigated on terahertz emission spectroscopy. Detectable terahertz pulses can be, to some extent, as a verification for the successful fabrication of the room-temperature 2D magnetic material.
Synchronization of a mm-Wave frequency comb to a chipscale mode-locked laser via harmonic injection locking
Authors: Bustos-Ramirez Ricardo , Trask Lawrence R. , Bhardwaj Ashish , Hoefler Gloria E. , Kish Fred A. , Delfyett Peter J.
Published: September 2020

A mm-Wave frequency comb with 240GHz spacing is synchronized to a MLL-PIC using harmonic injection locking, this represent optical frequency division of 24x. The Allan Deviation on the repetition rate stability is 10-10 at 1s.
Tiled Aperture Beam Combining with Reinforcement Learning
Authors: Tunnermann Henrik , Shirakawa Akira
Published: September 2020

We show deep reinforcement learning for phase stabilization in tiled aperture coherent beam combining. The trained agent was able to stabilize the phase using only a far-field image as input.
Precision coherent dual-comb spectroscopy at 3 microns
Authors: Chen Zaijun , Hänsch Theodor W. , Picqué Nathalie
Published: September 2020

Mid-infrared self-referenced spectra with resolved comb lines of 100-MHz spacing span up to 8 THz. Schemes for direct mid-infrared and up-conversion detections lead to signal-to-noise ratio higher than 4000 at 1000-s averaging time.
High Resolution (0.0005 cm-1) Spectroscopy of Carbon Disulfide with Interleaved Mid-IR Frequency Combs
Authors: Muraviev Andrey V. , Konnov Dmitrii , Vodopyanov Konstantin L.
Published: September 2020

We measured the high-resolution absorption spectrum of the carbon disulfide (CS2) V3V+1 band using a broadband dual-comb subharmonic OPO system. The 14.5-MHz effective resolution was achieved by interleaving eight comb spectra with 115-MHz intermodal spacing.
Artificial Intelligence for Real-Time Dual-Frequency Comb Hyperspectral Imaging
Authors: Voumard Thibault , Wildi Thibault , Brasch Victor , Alvarez Raul Gutierrez , Ogando German Vergara , Herr Tobias
Published: September 2020

A fully convolutional deep neural network is used for rapid analysis of dual-comb interferograms. The increase in analysis speed enables massively parallelized spec-troscopic detection and dual comb hyperspectral imaging in real-time.
A 20x20 Focal Plane Switch Array for Optical Beam Steering
Authors: Zhang Xiaosheng , Kwon Kyungmok , Henriksson Johannes , Luo Jianheng , Wu Ming C.
Published: September 2020

We present a two-dimensional random-access optical beam steering system composed of a 20x20 focal plane switch array integrated on a silicon photonics chip with microelectromechanical-system (MEMS) optical switches. 32°x32°field-of-view is demonstrated.
Resolution enhancement of optical-phased-array-based single-pixel imaging by using a multimode fiber
Authors: Fukui Taichiro , Nakano Yoshiaki , Tanemura Takuo
Published: September 2020

We demonstrate that single-pixel imaging resolution of optical phased array can be enhanced by transmitting through a multimode fiber. Using only 128 phase shifters, >1000 points are resolved, determined by the number of fiber modes.
Stimulated Brillouin Scattering based Optical Signal Processing
Authors: Schneider Thomas
Published: September 2020

Stimulated Brillouin scattering is the nonlinear effect with the lowest threshold and narrowest linewidth. Additionally, the SBS gain or loss transfer function can be tailored. This makes it an ideal candidate for signal processing.
Broadband SBS Filter for Optical Carrier Recovery Applications in Telecommunication Systems
Authors: Zarifi Atiyeh , Merklein Moritz , Liu Yang , Choudhary Amol , Eggleton Benjamin J. , Corcoran Bill
Published: September 2020

We demonstrate a broadband Brillouin filter for optical carrier recovery, which extends the operation range of the conventional filter from 2 nm to 10 nm in C-band, with a relatively flat gain and noise profile.
Enhancement of the SHG in monolayer MoS2 by an epsilon-near-zero substrate
Authors: Vianna Pilar G. , Almeida Aline dos S. , Gerosa Rodrigo M. , Bahamon Dario A. , de Matos Christiano J. S.
Published: September 2020

We report on second harmonic generation in MoS2 monolayers on a substrate with near zero dielectric constant. The enhanced pump field at the 2D material results in an order of magnitude frequency conversion increase.
Programmable Omni-Resonant Planar Cavity
Authors: Shiri Abbas , Schepler Kenneth L. , Abouraddy Ayman F.
Published: September 2020

We demonstrate experimentally that omni-resonance can be controlled by introducing the appropriate spatio-temporal spectral correlations into the field using a spatial light modulator. Such‘space-time’ fields can be used for resonant spectral notching and bandwidth control.
Impact of optical free-carrier generation on the performance of SOI phase shifters
Authors: Kriickel Clemens J. , Van Campenhout Joris , van Thourhout Dries
Published: September 2020

We provide measurement and simulation data of optical free-carrier generation in SOI phase shifters. We conclude that phase impairments caused by unwanted freecarriers can be equalized with an ~ 50% increase in phase shifter diode current.
Speckle Reconstruction with Corruption through Multimode Fibers Using Deep Learning
Authors: Fan Pengfei , Ruddlesden Michael , Wang Yufei , Su Lei
Published: September 2020

We present for the first time a deep learning approach toward speckle reconstruction with corruption through a multimode fiber (MMF) with a long length. Our experiments demonstrate that a small partly or randomly corrupted speckle can be reconstructed into its intact speckle over a 1km 100pm-core step-index MMF.
Digital holographic endo-microscopes based on multimode fibres
Authors: Čižmár Tomáš
Published: September 2020

Here I review the recent progress of endo-microscopes based on holographic conttol of light ttansport through multimode fibres. I discuss the fundamental and technological bases as well as recent applications of the new imaging tool.
Solid state LiDAR with sensing distance of over 40m using a VCSEL beam scanner
Authors: Fujioka Ibuki , Ho Zeuku , Gu Xiaodong , Koyama Fumio
Published: September 2020

We demonstrated a solid state LiDAR with a sensing distance range of over 40m by using a non-mechanical VCSEL beam-scanner. The depth accuracy of 22cm was obtained with a low peak-power Of 0.2 W.
Frequency-modulated comb LIDAR
Authors: Kuse Naoya , Fermann Martin E.
Published: September 2020

We propose and demonstrate frequency-modulated comb LIDAR (FMcomb LIDAR), in which comb modes of a frequency-modulated optical frequency comb are coherently stitched, generating an effective larger scanning range and enhanced ranging resolution.
Dual-Comb Based Two-Dimensional Angle Measurement System
Authors: Zhou Siyu , Le Vunam , Ni Kai , Zhou Qian , Wu Guanhao
Published: September 2020

We present a dynamic angle measurement method based on dual-comb interferometry that can reach a precision of 0.08 arc-second with 1 kHz response speed. This method can also be applied at long stand-off distances.
AFM engine with optical actuation and readout printed on the facet of a multi-core fiber
Authors: Trappen Mareike , Dietrich Philipp-Immanuel , Burger Pascal , Blaicher Matthias , Goring Gerald , Schimmel Thomas , Freude Wolfgang , Holscher Hendrik , Koos Christian
Published: September 2020

Using two-photon lithography, we fabricate an ultra-compact atomic force microscope engine on the facet of a multi-core fiber. The AFM is optically actuated and read out, and it offers atomic step-height resolution in difficult-to-access areas.
Robust and automated direct on-axis laser writing of coupling elements for photonic chips
Authors: Perez Edgar F. , Lu Xiyuan , Westly Daron , Srinivasan Kartik
Published: September 2020

The size/complexity of coupling structures printed with direct laser writing at the ports of photonic chips is increased by printing parallel to the ports’ axes. We demonstrate robust automated laser writing using passive alignment.
III-V/Si Adiabatic-Crossing Taper Structure Designed for p-Transfer Printing
Authors: Kou Rai , Hiratani Takuo , Yagi Hideki , Kuwatsuka Haruhiko , Okano Makoto , Ohno Morifumi , Kawashima Hitoshi , Suzuki Keijiro , Fujiwara Naoki , Shoji Hajime , Yamada Koji
Published: September 2020

We propose an efficient and robust adiabatic-crossing coupler for a p-transfer printed Ill-V/Si platform. Two-stage GalnAsP/InP tapers equipped with a side terrace are designed to maximize the efficiency (1.26 dB/coupling on average) and bonding area.
100 W-class 2 pm Ho:YAG Thin-Disk Laser
Authors: Tomilov Sergei , Vogel Tim , Hoffmann Martin , Wang Yicheng , Saraceno Clara J.
Published: September 2020

We demonstrate a continuous-wave single fundamental-mode Ho:YAG thin-disk oscillator pumped by Tm-fiber at 1908 nm, delivering record high output power of 96 W with an M2 of ~1.09 at 2090 nm and 2096 nm.
Observation of high gain in a CO2 amplifier pumped by a 4.3 pm laser
Authors: Tovey D. , Pigeon J. J. , Tochitsky S. Ya. , Louwrens G. , Ben-Zvi I. , Joshi C. , Martyshkin D. , Fedorov V. , Karki K. , Mirov S.
Published: September 2020

Gain dynamics in a 10 pm CO2 amplifier pumped by a 4.3 pm Fe:ZnSe laser are studied. Measured gain coefficients reached 30%/cm, indicating potentially high efficiency for short pulse amplification.
400 W All-fiberized Tm-doped MOPA with Narrow-linewidth
Authors: Liu Yinzi , Xing Yingbin , Li Jinyan
Published: September 2020

We demonstrate an all-fiberized master-oscillator power-amplifier (MOPA) at 1980 nm with homemade 25/400 Tm-doped fibers. An maximum output power of 400 W was obtained with a slope efficiency of 51%. The linewidth was measured to be 0.1 nm.
Double Layer Active Terahertz Chiral Metamaterial/graphene Modulators
Authors: Almond Nikita W. , Kindness Stephen j. , Michailow Wladislaw , Wei Binbin , Braeuninger-Weimer Philipp , Hofmann Stephan , Beere Harvey E. , Ritchie David A. , Degl’Innocenti Riccardo
Published: September 2020

Active circular dichroism is demonstrated with a double layer metamaterial device that uses electrical backgating of monolayer graphene to achieve linear to circular conversion at 2.13 THz.
Measuring Simultaneously Spatially and Temporally Focused Ultrafast Laser Pulses Using the Dispersion Scan Technique
Authors: Wilhelm Alex M. , Schmidt David D. , Adams Daniel E. , Durfee Charles G.
Published: September 2020

We demonstrate a novel dispersion scan algorithm using grating dispersion. We also propose using the intrinsic dispersion of temporally focused laser pulses to characterize the pulse structure by scanning a nonlinear crystal through focus.
Phase-sensitive Amplification in Nanophotonic Periodically Poled Lithium Niobate Waveguides
Authors: Chen Jia-Yang , Sua Yong Meng , Ma Zhaohui , Nguyen Lac , Huang Yu-Ping
Published: September 2020

We demonstrate phase-sensitive amplification in periodically poled lithium niobate nanowavguides, achieving a net gain of 11.8 dB and an extinction ratio of 14.9 dB for 1.2-ps pump pulse with 2.4-pJ pulse energy.
Study of gain for SiGeSn/GeSn/SiGeSn multiple quantum well lasers
Authors: Abernathy Grey , Zhou Yiyin , Ojo Solomon , Miao Yuanhao , Du Wei , Sun Greg , Soref Richard , Liu Jifeng , Zhang Yong-Hang , Mortazavi Mansour , Li Baohua , Yu Shui-Qing
Published: September 2020

We studied the design of SiGeSn/GeSn/SiGeSn multiple-quantum-well active regions and the gain threshold needed to achieve lasing. The enhancement of optical confinement factor was demonstrated by introducing a SiGeSn cap.
Monolithic integration of GaP on superconducting circuits for applications in quantum computing
Authors: Honl Simon , Popoff Youri , Caimi Daniele , Davila Diana , Seidler Paul
Published: September 2020

We demonstrate hybrid integration of gallium phosphide photonic crystal cavities with superconducting Nb circuits using direct wafer bonding. Quality factors of Q
o
= 1.4 • 105 are achieved for optical cavities in close proximity to the Nb electrodes.
Statistical Modelling of Coherent Rayleigh Backscattered Intensity Fluctuations in Single Mode Optical Fibers
Authors: Tovar Pedro , Lima Bismarck Costa , Temporao Guilherme , von der Weid Jean Pierre
Published: September 2020

We experimentally validate a model for coherent backscattering of light in fibers based on random fluctuations of the refractive index over the fiber length, described by an ergodic process. Simulations remarkably agree with experimental results.
Fractal superconducting nanowire avalanche photodetector with 60% system efficiency and 1.05 polarization sensitivity
Authors: Lan Xiaojian , Meng Yun , Zou Kai , Hu Nan , Xu Liang , Wang Zhao , Cao Xuhui , Zichi Julien , Steinhauer Stephan , Zwiller Val , Hu Xiaolong
Published: September 2020

We report on a fractal superconducting nanowire avalanche photodetector simultaneously with 60% system efficiency, 1.05 polarization sensitivity, 4-ns recovery time, and 45-ps timing jitter. The efficiency is the highest among polycrystalline SNSPDs with polarization-insensitive designs.
Two-wire Waveguide for Terabit DSL
Authors: Shrestha Rabi , Kerpez Kenneth , Hwang Chan Soo , Mohseni Mehdi , Cioffi John , Mittleman Daniel M.
Published: September 2020

We investigate the data transmission capabilities of a two-wire waveguide ensheathed in a metallic conduit at THz frequencies and demonstrate that data rates of Tbps are achievable using vectoring techniques.
One Megahertz Single-Shot Measurement of Ultrafast Laser Pulses
Authors: Kane Daniel J. , Vakhtin Andrei B.
Published: September 2020

In this work we report on the development of a system for measuring single shot ultrafast laser pulses with a bandwidth greater than 2 THz at 1550 nm. The hybrid optical and electronic system is capable of measurement rates up to greater than 1 MHz. The process is all linear, and single pulses from a mode-locked Erbium fiber laser are characterized.
Ultrashort laser pulse-assisted nonlinear photonic lattices
Authors: Denz Cornelia , Hanafi Haissam , Imbrock Jorg
Published: September 2020

We give an overview of recent developments in structuring nonlinear photonic lattices for quasi-phase matched parametric processes. Focused femtosecond laser pulses are used to modulate the x(2)-nonlinearity of nonlinear optical crystals in all three dimensions.
Enhanced four-wave mixing in micro-ring resonators integrated with layered graphene oxide films
Authors: Wu Jiayang , Yang Yunyi , Zhang Yuning , Qu Yang , Jia Linnan , Xu Xingyuan , Chu Sai T. , Little Brent E. , Morandotti Roberto , Jia Baohua , Moss David J.
Published: September 2020

We experimentally demonstrate enhanced four-wave mixing in micro-ring resonators (MRRs) integrated with graphene oxide films. We achieve up to ~7.6-dB enhancement in conversion efficiency for a uniformly coated MRR and ~10.3-dB for a patterned device.
Optomechanical Sensing in the Nonlinear Saturation Limit
Authors: Javid Usman A. , Rogers Steven D. , Graf Austin , Lin Qiang
Published: September 2020

The dynamic range of optomechanical-displacement measurement is limited by the nonlinearity of the cavity transmission. We demonstrate that the dynamic range can be made arbitrarily large within a small detection bandwidth in the resolved-sideband regime.
Ultrasensitive torque detection and ultrafast rotation with an optically levitated nanoparticle
Authors: Ahn Jonghoon , Xu Zhujing , Bang Jaehoon , Ju Peng , Gao Xingyu , Li Tongcang
Published: September 2020

We develop an ultrasensitive optically levitated nanoparticle torque sensor and experimentally demonstrate sensitivity of (4.2 ± 1.2) x 10-27Nm/١/Hz at room temperature. We also achieve record high mechanical rotation at several GHz.
Real-time microanalysis on evaporation rate for cellular subpicoliter liquid droplet using off-axis fiber interferometer
Authors: Yao Cheng-Kai , Chen Nan-Kuang , Chui Hsiang-Chen , Liu Chun-Nien , Han Haili , Grattan Kenneth T. V. , Rahman B M A
Published: September 2020

We demonstrate a real-time microanalysis approach to the evaporation rate of a (sub)picoliter liquid drop, measured over a 7.85-0.38 picoliter volume, using an off-axis fiber interferometer and achieving the best displacement resolution of 24 nm.
Inheriting from a Daughter Pulse: Coherence Eradication in Soliton Self-Mode Conversion
Authors: Antikainen Aku , Kabagöz Havva Begüm , Ramachandran Siddharth
Published: September 2020

We demonstrate how > 100 kW peak power solitons in a multi-mode fiber can experience complete degradation of shot-to-shot coherence due to an ultra-low power noise seed in a different spatial mode.
Direct Patterned Growth of PECVD Graphene Transparent Electrodes on GaN LED Epiwafers Using Co as a Sacrificial Catalyst Layer
Authors: Xiong Fangzhu , Guo Weiling , Dong Yibo , Wang Le , Du Zaifa , Sun Jie
Published: September 2020

Co acts as both an etching mask and a catalyst for the growth of grapheme, high- quality graphene can be obtained quickly and at low temperatures for transparent electrode applications on GaN LEDs.
Single-mode tunable mid-IR laser based on a high-Q silicon microresonator
Authors: Shim Euijae , Molina Andres Gil , Westreich Ohad , Dikmelik Yamac , Lascola Kevin , Gaeta Alexander L. , Lipson Michal
Published: September 2020

We demonstrate a single longitudinal mode, tunable mid-IR laser by self-injection locking a multiple longitudinal mode Interband Cascade Laser (ICL) to a high-Q Si microresonator at 3.4 p,m.
Electro-optic polarisation conversion at 0.8 K in titanium in-diffused lithium niobate waveguides
Authors: Thiele Frederik , Hopker Jan Philipp , Bartnick Moritz , vom Bruch Felix , Herrmann Harald , Ricken Raimund , Quiring Victor , Eigner Christof , Siberhorn Christine , Bartley Tim J.
Published: September 2020

We demonstrate an electro-optic polarisation converter for 1550nm at cryo genic temperatures in titanium in-diffused lithium niobate waveguides. The switching voltage increases, the modulation depth remains unchanged, and we show operation up to 25 MHz.
Hybrid Si3N4-LiNbO3 integrated platform for electro-optic conversion
Authors: Churaev Mikhail , Honl Simon , Wang Rui Ning , Mohl Charles , Liu Tianyi , Skehan J. Connor , Riemensberger Johann , Caimi Daniele , Liu Junqiu , Seidler Paul , Kippenberg Tobias J.
Published: September 2020

We demonstrate the integration of a Si3N4 Damascene photonic platform with thin-film lithium niobate on insulator (LNOI) via direct wafer bonding. This process enables fabrication of hybrid X(2)-X(3) microresonators with Q " 106, as well as integrated travelling wave EO modulators.
Integrated Lithium Niobate Acousto-optic Frequency Shifter
Authors: Shao Linbo , Sinclair Neil , Leatham James , Hu Yaowen , Yu Mengjie , Turpin Terry , Crowe Devon , Loncar Marko
Published: September 2020

We demonstrate a 3-GHz acousto-optic frequency shifter on a thin-film lithium niobate platform, featuring over 30 dB carrier suppression. The active frequency shifting loop generates a frequency comb with 200 lines over 5 nm optical bandwidth.
Acousto-optic modulation of photonic bound state in the continuum
Authors: Yu Zejie , Sun Xiankai
Published: September 2020

We demonstrated acousto-optic modulation of photonic bound state in the continuum on an etchless lithium niobate platform. We obtained coherent coupling between microwave and optical photons, exhibited by the observed electro-acousto-optically induced transparency and absorption.
Low-loss and Ultra-broadband Silicon Nitride Angled MMI Polarization Splitter
Authors: Kudalippalliyalil Ramesh , Murphy Thomas E. , Grutter Karen E.
Published: September 2020

We experimentally demonstrate a SiN angled-MMI based polarization splitter with nearly wavelength-independent performance over C+L bands, insertion loss « 0.8 dB (1.0 dB), and crosstalk < —18 dB (< -20 dB) for TE (TM) polarization.
Efficient second harmonic generation in a Si3 N4 microring
Authors: Lu Xiyuan , Moille Gregory , Rao Ashutosh , Westly Daron , Li Qing , Srinivasan Kartik
Published: September 2020

We demonstrate efficient second harmonic generation in a silicon nitride microring, through perfect phase matching of a photogalvanic DC-field-induced x(2) process. The efficiency of 2,500 %/W is > 100 x larger than the previous record in silicon photonics.
A Waveguide-Coupled Colloidal Quantum Dot LED on a Silicon Nitride Platform
Authors: Elsinger Lukas , Tanghe Ivo , Van Acker Frederik , Zawacka Natalia K. , Petit Robin , Neyts Kristiaan , Detavernier Christophe , Geiregat Pieter , Hens Zeger , Van Thourhout Dries
Published: September 2020

Colloidal quantum dots (QDs) have become an attractive light source for visible photonics. Here, we demonstrate the first integrated LED based on CdSe/CdS QDs, with the emission directly coupled to a silicon nitride waveguide.
Optimized Multicore Amplifiers for Space-Division Multiplexing Transmission Systems
Authors: Le Taillandier de Gabory Emmanuel , Takeshita Hitoshi , Matsumoto Keiichi
Published: September 2020

We show recent technologies for low power consumption multi-core amplifiers. We report advances concerning core pumping, cladding pumping and optimized hybrid pumping technologies for power efficient optical amplification with erbium doped multi-core fiber amplifiers.
Demonstration of 160 Gb/s On-chip Mode-division Multiplexing Transmission
Authors: Huang Yetian , Huang Hanzi , Zhang Ruihuan , Song Yingxiong , Chen Haoshuo , Fontaine Nicolas K. , Ryf Roland , Zhu Qingming , He Yu , Zhang Yong , Su Yikai , Wang Min
Published: September 2020

We experimentally demonstrate 160 Gbit/s on-chip mode-multiplexed transmission over a multimode silicon-on-insulator (SOI) waveguide using four spatial and polarization modes. 4x4 MIMO-based DSP is used to compensate mode coupling.
Ultra-Sensitive and High Figure of Merit Interferometric Biosensors Using Dispersion Effects in Porous Waveguides
Authors: Talukdar Tahmid H. , Kravchenko Ivan I. , Ryckman Judson D.
Published: September 2020

We report an interferometric biosensor that theoretically and experimentally exceeds the sensitivity predicted by bulk effective medium theory. The devices are realized by engineering dispersion effects in high confinement factor multilayer porous silicon rib waveguides.
Low-repetition-rate Integrated Electro-optic Frequency Comb Sources
Authors: Shams-Ansari Amirhassan , Reimer Christian , Sinclair Neil , Zhang Mian , Picque Nathalie , Loncar Marko
Published: September 2020

We demonstrate a low-repetition-rate lithium niobate based electro-optic (EO) frequency comb operating with 3.481 GHz line spacing, by integrating a cavity-based EO comb source with traveling-wave phase-modulators on the same chip.
L-band wavelength-tunable fiber laser based on Er3+-doped tellurite fiber
Authors: Fu Shijie , Zhu Xiushan , Wang Junfeng , Wu Jingwei , Tong Minghong , Zong Jie , Li Michael , Wiersma Kort , Chavez Arturo , Peyghambarian Nasser
Published: September 2020

L-band wavelength-tunable Er3+-doped tellurite fiber lasers in a linear cavity based on Littrow configuration were developed. Wavelength tunable range of 38 nm from 1589 to 1627 nm was achieved with in-band pump at 1570 nm.
Surface-Acoustic-Wave Characterization of Thin Layer Deposition on a Standard Silicon-Photonic Circuit
Authors: Hen Mirit , Munk Dvir , Katzman Moshe , Priel Maayan , Taragin Sarah , Zadok Avi
Published: September 2020

A thin layer of alumina is characterized using a surface acoustic wave photonic circuit in standard silicon on insulator. Small changes in acoustic velocity are identified by an integrated microwave photonic filter, through acoustic delays.
Parametric Conversion in Compact Ring Diode Lasers
Authors: Janjua B. , Iu M. L. , Charles P. , Chen E. , Helmy Amr S.
Published: September 2020

Single mode Bragg ring lasers, with SNR > 30 dB have been demonstrated. Efficient, self-pumped, broadband phase-matching of χ(2) nonlinearity is observed, offering self-pumped parametric C-band conversion >40 nm with efficiency of 142% W_1cm_2.
Shaping harmonic frequency combs in ring injection lasers by defect engineering
Authors: Kazakov Dmitry , Piccardo Marco , Beiser Maximilian , Opacak Nikola , Wang Yongrui , Belyanin Alexey , Schwarz Benedikt , Capasso Federico
Published: September 2020

Quantum cascade lasers are known to spontaneously skip modes and generate widely-spaced harmonic frequency combs. We show that engineering defects in a ring waveguide allows for deterministic control of the comb intermode spacing.
Twenty years of optical frequency combs: Science, technology and applications
Authors: Diddams Scott A.
Published: September 2020

Optical frequency combs provide the means to seamlessly unite the electromagnetic spectrum, from the RF through the XUV. This tutorial with provide an overview of frequency comb science, technology and applications.
Micro-Integrated Laser Modules for Optical Clocks
Authors: Arar Bassem , Kürbis Christian , Smol Robert , Bawamia Ahmad , Wicht Andreas , Yu Jialiang , Halder Matthäus , Lessing Maurice , Holzwarth Ronald , Hafiz Moustafa Abdel , Huntemann Nils , Lipphardt Burghard , Legero Thomas , Sterr Uwe
Published: September 2020

A micro-integrated laser module has been developed for the deployment in a compact, transportable 171Yb+ optical clock. With this laser module, the clock laser system demonstrated a Modified Allan Deviation of less than 1.5×10-15 for 1 s ≤ 100 s when compared against a superior reference laser. © 2020 The Author(s)
Adaptive Wavefront Manipulation for Remote Detection via Filamentation
Authors: Finney Lauren A. , Lin Jinpu , Skrodzki Patrick J. , Burger Milos , Nees John , Krushelnick Karl , Jovanovic Igor
Published: September 2020

We demonstrate that optical wavefront control can enhance the intensity of signal in filament-induced breakdown spectroscopy, and that this enhancement can be associated with the application of astigmatism. © 2020 The Authors)
Intelligent Bandwidth Allocation for Latency Management in NG-EPON using Reinforcement Learning Method
Authors: Zhou Qi , Zhu Jingjie , Zhang Junwen , Jia Zhensheng , Huberman Bernardo , Chang Gee-Kung
Published: September 2020

A novel intelligent bandwidth allocation scheme in NG-EPON using reinforcement learning is proposed and demonstrated for latency management. The capability of the proposed scheme is verified under both fixed and dynamic traffic loads.
Real-time FPGA Verification for 25G-PON and 50G-PON LDPC Codes
Authors: Wang Weiming , Tao Kai , Qian Weifeng , Cai Yi , Lei Ming , Zhou Xin , Chien Hung-Chang , Liang Junpeng , Zhang Shihua , Liu Zheng
Published: September 2020

Employing 75-piece FPGA implementation, we investigate the performance down to 10
-15
BER of hard-decision 25G-PON LDPC and soft-decision 50G-PON LDPC at a record 90Gbps throughput. FPGA emulations reveal soft-decision LDPC code offers more than 1.5dB coding gain with no error floor. © 2020 The Author(s)
300+ Gbps Short-Reach Optical Communications
Authors: Ozolins Oskars , Zhang Lu , Udalcovs Aleksejs , Louchet Hadrien , Dippon Thomas , Gruen Markus , Pang Xiaodan , Schatz Richard , Westergren Urban , Xiao Shilin , Popov Sergei , Chen Jiajia
Published: September 2020

We review experimental intensity modulation and direct detection demonstrations for short reach optical communications. We also evaluate 8-level PAM and DMT transmitter to deliver 300 Gbps line rate and beyond per single lane in C-band. © 2020 The Author(s)
A Core-Shell-Shell Nanoparticle Architecture Towards Bright Upconversion and Improved Förster Resonant Energy Transfer
Authors: Siefe Chris , Mehlenbacher Randy D. , Peng Chunte Sam , Zhang Yunxiang , Fischer Stefan , Lay Alice , McLellan Claire A. , Alivisatos A. Paul , Chu Steven , Dionne Jennifer A.
Published: September 2020

We synthesized and characterized a core-shell-shell upconverting nanoparticle architecture. Compared to the traditional core-shell architecture, we demonstrated 2-fold brighter single particle emission and 8-fold improved emission enhancement via Förster resonant energy transfer to a dye.
Transition dynamics of soliton molecules in passively mode- locked fiber lasers
Authors: Xia Ran , Luo Yiyang , Shum Perry Ping , Liu Yusong , Ni Wenjun , Sun Qizhen , Zhao Luming , Tang Xiahui
Published: September 2020

Real-time spectroscopy unveils the build-up and transient dynamics of ultrashort pulses. Here, we experimentally characterize the evolution scenario of single soliton and bi-/tri-soliton molecules, further highlighting the underlying transition dynamics.
Nanoscale Optoelectronic Memory with Nonvolatile Phase–Change Photonics
Authors: Youngblood Nathan , Farmakidis Nikolaos , Li Xuan , Bhaskaran Harish
Published: September 2020

Waveguide-integrated plasmonic nanogap electrodes bridged by GST form a phasechange memory cell addressable in both the optical and electrical domains. Our hybrid memory cell reduces the footprint and switching energy by 100× and 2× respectively over prior works.
Programmable metasurface using phase change material for waveguide mode conversion
Authors: Wu Changming , Yu Heshan , Li Huan , Takeuchi Ichiro , Li Mo
Published: September 2020

We demonstrate a programmable TE0-to-TE1 mode converter utilizing phase change material Ge2Sb2Te5 (GST) based phase gradient metasurface integrated on a silicon nitride waveguide. This compact mode converter features high energy efficiency and broadband performance.
Ring Laser Frequency Combs Enabled by Phase Turbulence and Their Connection to Kerr Combs
Authors: Piccardo Marco , Schwarz Benedikt , Kazakov Dmitry , Beiser Maximilian , Opačak Nikola , Wang Yongrui , Jha Shantanu , Hillbrand Johannes , Tamagnone Michele , Chen Wei Ting , Zhu Alexander Y. , Columbo Lorenzo L. , Belyanin Alexey , Capasso Federico
Published: September 2020

We demonstrate that ring lasers can attain multimode operation at a very low pumping level, contrary to common belief. The instability is explained via the Ginzburg-Landau theory, establishing a connection between laser and microresonator combs.
Hot carrier optoelectronics with titanium nitride
Authors: Doiron Brock , Güsken Nicholas A. , Lauri Alberto , Li Yi , Mihai Andrei , Matsui Takayuki , Bower Ryan , Huettenhoffer Ludwig , Regoutz Anna , Forno Stefano Dal , Fearn Sarah , Petrov Peter K. , Cortés Emiliano , Cohen Lesley F. , Alford Neil M. , Lischner Johannes , Petrov Peter , Maier Stefan A. , Oulton Rupert F.
Published: September 2020

Titanium oxynitride enables a range of plasmonic and optoelectronic functionality using long-lived photo-generated hot carriers. We explore the time scale of hot carriers in TiN and their use in photochemical reduction and Schottky detectors.
Auger Recombination in Strained Mid-Infrared Quantum Wells
Authors: Underwood Kenneth J. , Briggs Andrew F. , Sifferman Scott D. , Verma Varun B. , Sirica Nicholas S. , Prasankumar Rohit P. , Nam Sae Woo , Silverman Kevin L. , Bank Seth R. , Gopinath Juliet T.
Published: September 2020

We measure effect of strain on Auger recombination from compositional and applied biaxial stress using time-resolved photoluminescence and pump-probe spectroscopy. Results suggest that straining by composition, but not external stress, can tune the Auger coefficient.
Theoretical and numerical study of the time-bandwidth product in resonant cavities with nonreciprocal coupling
Authors: Cardea I. , Grassani D. , Upham J. , Boyd R. W. , Schulz S. A. , Tsakmakidis K. L. , Brès C. S.
Published: September 2020

We present a theoretical and numerical model to show how the nonreciprocal coupling in a generalized resonator affects the balance between the reflected and intracavity power as well as the time-bandwidth product of the system.
Chalcogenide Photonic Integration at 2 Micron with Improved Wavelength and Fabrication Dependency
Authors: Shen Weihong , Zeng Pingyang , Du Jiangbing , Zhang Bin , Li Zhaohui , Xu Ke , He Zuyuan
Published: September 2020

Grating coupler and mode converter working at 2-micron waveband were fabricated on the 600-nm-thick As2S3-on-oxide platform. Both simulation and experiment results indicate that 2-micron As2S3 components has broadened wavelength bandwidth and improved fabrication tolerance.
Neural Nets to Approach Optimal Receivers for High Speed Optical Communication
Authors: Kalla Sai Chandra Kumari , Nejad Rizan Homayoun , Zhalehpour Sasan , Rusch Leslie A.
Published: September 2020

We show via simulation that two nonlinear neural network solutions can achieve performance close to that of the maximum likelihood sequence estimator for experimental frequency responses of a silicon photonic modulator and coherent detection.
Design Optimisation of Power-Efficient Submarine Line through Machine Learning
Authors: Ionescu Maria , Ghazisaeidi Amirhossein , Renaudier Jérémie , Pecci Pascal , Courtois Olivier
Published: September 2020

An optimised subsea system design for energy-efficient SDM operation is demonstrated using machine learning. The removal of gain-flattening filters employed in submarine optical amplifiers can result in capacity gains at no additional overall repeater cost.
Saliency Segmentation with Fourier-space Diffractive Deep Neural Networks
Authors: Yan Tao , Wu Jiamin , Zhou Tiankuang , Xie Hao , Xu Feng , Fan Jingtao , Fang Lu , Lin Xing , Dai Qionghai
Published: September 2020

We propose to apply diffractive deep neural networks (D2NN) for solving advanced computer vision tasks and demonstrate the successful application of Fourier-space D2NN for all-optical saliency segmentation of both microscopic samples and macroscopic scenes.
Unidirectional injection-locked Brillouin laser in silicon
Authors: Otterstrom Nils T. , Gertler Shai , Zhou Yishu , Kittlaus Eric A. , Behunin Ryan O. , Gehl Michael , Starbuck Andrew L. , Dallo Christina M. , Pomerene Andrew T. , Trotter Douglas C. , Lentine Anthony L. , Rakich Peter T.
Published: September 2020

We demonstrate injection-locked operation of a silicon-based Brillouin laser for the first time. The unique spatio-temporal inter-modal Brillouin dynamics enable nonreciprocal control and low-phase-noise operation within a monolithically integrated system.
Ultraflat bandpass high extinction silicon photonic filters
Authors: Singh Anshuman , Belansky Richard , Soltani Mohammad
Published: September 2020

We report silicon photonic ultraflat bandpass high-rejection (>55 dB) filters with low insertion loss at telecommunication wavelengths and efficient tunability via silicon-doped microheaters. Such filters are promising for RF photonics and quantum information processing applications.
Optofluidic Chromatography: A Tunable Plasmonic Microlens for Label-Free On-Flight Sorting of Exosomes
Authors: Zhu Xiangchao , Cicek Ahmet , Li Yixiang , Yanik Ahmet Ali
Published: September 2020

Sophisticated instrumentation requirements for optics and microfluidics are fundamental shortcomings of optical chromatography. We introduce a subwavelength-thick 4μm*4μm footprint optofluidic microlens for high-throughput label-free sorting of exosomes by size and chemical composition on-chip.
Quantum-Enhanced Fiber-Optic Gyroscopes Using Quadrature Squeezing and Continuous-Variable Entanglement
Authors: Grace Michael R. , Gagatsos Christos N. , Zhuang Quntao , Guha Saikat
Published: September 2020

For fiber-optic gyroscope designs, we analyze the quantum enhancement from quadrature-squeezed and entangled optical probe states for rotation sensing. Under realistic experimental constraints and fiber loss, we analytically show substantial variance suppression over classical sensors.
Generating Light with Orbital and Spin Angular Momenta in Silicon Waveguides using Berry’s Phase
Authors: Patton Ryan J. , Reano Ronald M.
Published: September 2020

We utilize out-of-plane waveguides exhibiting Berry’s phase to generate guided light carrying angular momentum. The normalized output orbital and spin angular momenta are computed to be 0.85 and 0.15 per photon, respectively, at 1550 nm wavelength.
Silicon Topological Photonic Bandpass/Notch Filter
Authors: Sun Lu , Wang Hongwei , Zhang Yong , Su Yikai
Published: September 2020

By constructing waveguides and triangular microloops with two types of valley photonic crystals, we experimentally demonstrate a topological photonic bandpass/notch filter in the telecom band on the SOI platform.
Slow Light Waveguide Based on Topological Edge States in Valley Photonic Crystals
Authors: Yoshimi Hironobu , Yamaguchi Takuto , Katsumi Ryota , Ota Yasutomo , Arakawa Yasuhiko , Iwamoto Satoshi
Published: September 2020

We demonstrate slow light waveguides using topological valley kink states. We found in-gap high-group-index inodes at bearded interfaces of silicon-based valley photonic crystals, clearing the path to build topologically-protected slow light waveguides only using semiconductors.
Easily Manufacturable GaAs/AlGaAs DFB Lasers with Shallow Surface Gratings and Oxide Aperture
Authors: Zhang Pengfei , Liu Can , Xiang Minwen , Ma Xiang , Tan Su , Dai Xiangyang , Liu Jia , Zhao Gongyuan , Tang Bao , Lu Qiaoyin , Donegan John F. , Guo Weihua
Published: September 2020

An easily manufacturable oxide-aperture ridge-waveguide GaAs/AlGaAs DFB laser has been demonstrated with first-order surface-gratings shallowly etched into the ridge. Uncoated devices exhibit threshold-current of 10 mA and SMSR>40 dB. Stable single-mode operation has been observed over the temperature range from 10 to 50 °C.
High-Q suspended optical resonators in 3C-SiC obtained by thermal annealing
Authors: Powell Keith , Shams-Ansari Amirhassan , Desai Smit , Austin Mitchell , Deng Jiangdong , Sinclair Neil , Loncar Marko , Yi Xiaoke
Published: September 2020

We fabricate suspended single-mode optical waveguides and ring resonators in 3C-SiC that operate at telecommunication wavelength, leverage post-fabrication thermal annealing to minimize optical propagation losses and demonstrate Q of over 41,000.
Space-Division Multiplexing Fibers for Microwave Signal Processing
Authors: Ureña Mario , Garcia Sergi , Gasulla Ivana
Published: September 2020

We report the implementation of tunable microwave signal processing based on sampled true time delay line operation using a dispersion-engineered heterogeneous multicore fiber link.
Annular core photonic crystal fiber for propagation of optical vortices
Authors: Sharma Manish , Amirkhan Fatemeh , Mishra Satyendra K. , Sengupta Dipankar , Messaddeq Younès , Blanchard François , Ung Bora
Published: September 2020

We demonstrate for the first time the transmission of OAM and vector singular beams inside an endlessly-monoradial photonic crystal fiber (AC-PCF). The high mode purity indicates that the AC-PCF can find applications in space-division multiplexing and optical sensing.
All-Fiber Second-Order OAM Amplifier Based on Mode Selective Coupler
Authors: Wu Yan , He Xinyu , Wen Jianxiang , Pang Fufei , Chen Zhenyi , Zeng Xianglong , Wang Tingyun
Published: September 2020

We fabricate a kind of mode selective coupler which can generate OAM± mode, and further propose an all-fiber OAM± mode amplifier with high gain and good flatness at range of 1525-1575 nm.
10 PetaWatt Laser System for Extreme Light Physics
Authors: Lureau François , Matras Ghuillaume , Chalus Olivier , Derycke Christophe , Radier Christophe , Casagrande Olivier , Ricaud Sandrine , Boisson Christophe Simon
Published: September 2020

We present results obtained on the first 10PW laser at ELI-NP installation. We demonstrated a laser system delivering pulses at 1 shot/min with a peak power of 10.9PW.
High-Q Nanomechanical Resonators for Optomechanical Sensing Beyond the Standard Quantum Limit
Authors: Singh Robinjeet , Purdy Thomas P.
Published: September 2020

We fabricate high-stress silicon and silicon-nitride based nanomechanical string resonators to study quantum optomechanical interactions. We use phononic bandgap engineering techniques to minimize mechanical energy dissipation in the out-of-plane defect mode of the resonator.
Ultrafast Dynamics of a Terahertz Dual-Fed Relativistic Electron Bunch Compressor
Authors: K Othman Mohamed A. , Snively Emma C. , Kozina Michael E. , Kramer Patrick L. , Shen Xiaozhe , Ji Fuhao , Weathersby Stephen , Wang X. J. , Hoffmann Matthias C. , Nanni Emilio A.
Published: September 2020

We present the initial characterization of a THz-based dual-fed electron bunch compressor. Intense single-cycle THz pulses, generated by optical rectification in organic crystals OH1, are coupled into a parallel-plate waveguide and characterized using electro-optic sampling.
Spectral Broadening by Saturated Second Harmonic Generation in Nanophotonic Lithium Niobate Waveguides
Authors: Jankowski Marc , Langrock Carsten , Desiatov Boris , Loncar Marko , Fejer Martin M.
Published: September 2020

We demonstrate a new approach to carrier-envelope-offset detection in dispersion-engineered waveguides based on saturated second harmonic generation of femtosecond pulses. This technique simultaneously broadens both harmonics, resulting in coherent carrier-envelope-offset beatnotes across ~ 400-nm of bandwidth.
Supercontinuum spectral evolution prediction by recurrent neural network
Authors: Salmela Lauri , Lapre Coraline , Dudley John M. , Genty Goery
Published: September 2020

We use recurrent neural network to successfully predict the spectral evolution of cohererent supercontinuum along propagation in an optical fiber. The network performs particularly well for a wide range of input pulse parameters.