bluuebunny/crossref_metadata_2025 huggingface dataset:
Speckle Based Sensing using Incoherent Thermal Light Source: Passive Speckles
Authors: Genish Hadar , Wolbromsky Lauren , Benyamin Matan , Califa Ran , Zalevsky Zeev
Published: September 2020

The angle of a rotating diffuser was evaluated by tracking the speckle pattern produced from an incoherent thermal radiation source demonstrating the use of an incoherent source for speckle-based sensing.
GaN μLED Arrays in Parylene C Substrate for Flexible Implantable Optogenetics: Fabrication and Modeling
Authors: Reddy Jay W. , Kimukin Ibrahim , Stewart Luke T. , Ahmed Zabir , Barth Alison L. , Towe Elias , Chamanzar Maysamreza
Published: September 2020

Optoelectronic neural probes with (22 pm x 22 pm) Gallium-Nitride pLED arrays (up to 32 devices) on a Parylene C substrate are fabricated and analyzed using thermal and optical modeling to identify thermally-safe stimulation parameters.
Vectorial Hologram Based on Pixelated Metasurface
Authors: Song Qinghua , Baroni Arthur , Sawant Rajath , Ni Peinan , Brandli Virginie , Chenot Sébastien , Vézian Stéphane , Damilano Benjamin , de Mierry Philippe , Khadir Samira , Ferrand Patrick , Genevet Patrice
Published: September 2020

We report a general method for full-polarization generation based on pixelated metasurface. By encoding the holographic phase profile into such pixels, vectorial holograms are constructed for the application of multidirectional display and cylindrical vector beam (CVB).
Photopatternable Carbon Dot-Embedded Hydrogels for Sensitive pH Detection
Authors: Liu Ye , Wu Bo , Tanyi Ekembu K , Cheng Li-Jing
Published: September 2020

We report photopatternable pH sensors using carbon dot-copolymerized hydrogels that exhibit a large emission intensity change in response to a transition across pH 7. The device enables the monitoring of biochemical conditions in microfluidic platforms.
Dual-comb Spectroscopy for Cascaded Multi-paths
Authors: Chen Xinyi , Zhang Weipeng , Li Yan , Wei Haoyun
Published: September 2020

A cascaded dual-comb system retrieving both spectral transmittances and absorption lengths for multiple path-segments of different gases is reported with 1.2% concentration extraction deviation within 1 s.
Femtosecond laser written photonics for high speed telecommunications
Authors: Gross Simon , Ross-Adams Andrew , Fernandez Toney Teddy , Riesen Nicolas , Withford Michael
Published: September 2020

To meet future data traffic demand, the telecommunications industry is developing optical fiber network architectures that exploit space division multiplexing (SDM). Femtosecond laser written photonics is a promising platform for SDM end-of-fiber components.
Virus-based ultra-thin film colorimetric sensors for enhanced chromaticity
Authors: Yoo Young Jin , Kim Won-Geun , Ko Joo Hwan , Lee Yujin , Oh Jin-Woo , Song Young Min
Published: September 2020

We present a virus-coated ultra-thin films for colorimetric detection with enhanced chromaticity. Designed to be sensitive to outer changes, ultra-thin porous structures detect external environment changes with dynamic thickness variation of a virus coating layer.
Classification of Ultrashort-Laser-Induced Modifications by LED-Array-Based Illumination and Machine Learning
Authors: Watanabe Wataru
Published: September 2020

Ultrashort laser micromachining of glass has possible applications in drilling, cutting, welding, and waveguide fabrication. We present machine learning method for classification of modifications by multi-contrast images obtained with a programmable LED array.
Miniaturized QEPAS Detector Concept for Methane
Authors: Tatenguem Hervé , Josnan Amrita D. , Milde Tobias , Hoppe Morten , Sacher Joachim
Published: September 2020

QEPAS enables very compact detectors due to the small detection volume. Currently limitations originate from bulky control electronics, like lock-in amplifiers. We report on reducing size and energy of FPGA based devices and their application in methane detection.
Design of the Microstructure Parallel-Connected PIN Photodetector with High Bandwidth- Efficiency Product
Authors: Niu Huijuan , Huang Yongqing , Yang Yisu , Liu Kai , Duan Xiaofeng , Cai Shiwei , Wei Qi , Wu Gang , Xiao Chaozheng , Zhi Huayun , Ren Xiaomin
Published: September 2020

We propose and optimize a parallel structure PIN photodetector by using a obconical shape surrounded by a ring-shaped V-groove trench to improve the PD performance. The bandwidth- efficiency product is increased by 67.89% with the construction.
Deep-Learning-based Computational Biomedical Microscopy with Uncertainty Quantification
Authors: Tian Lei , Xue Yujia , Cheng Shiyi , Li Yunzhe , Ji Yi
Published: September 2020

I will present several deep learning based computational microscopy techniques including phase microscopy and imaging oximetry. Emphasis will be put on an uncertainty quantification framework for assessing the reliability of these techniques.
Deep-Z: 3D Virtual Refocusing of Fluorescence Images Using Deep Learning
Authors: Wu Yichen , Rivenson Yair , Wang Hongda , Luo Yilin , Ben-David Eyal , Bentolila Laurent A. , Pritz Christian , Ozcan Aydogan
Published: September 2020

We demonstrate a deep learning-based 3D virtual refocusing framework for fluorescence microscopy, which extends the imaging depth-of-field by 20-fold and corrects various aberrations, all digitally performed after a 2D image of the sample is captured.
High-power continuously tunable terahertz beat note generation based on a generic photonic integration platform
Authors: An Pengli , Bente Erwin A.J.M. , Heck Martijn J.R.
Published: September 2020

We generate a continuously tunable terahertz beat note, with a maximum output power of 50 mW and frequency range from 807 to 915 GHz, by using the device implemented on a generic photonic integration platform.
Co-Occurrence of Resonance and Non-Resonance Tunneling Injection Processes in Quantum Dot Gain Media
Authors: Khanonkin Igor , Eyal Ori , Eisenstein Gadi , Bauer Sven , Reithmaier Johann Peter
Published: September 2020

Resonance and non-resonance tunneling processes in tunneling injection quantum dot gain media were demonstrated, to occur simultaneously. Our finding sheds light on the basic tunneling injection schemes and their proper utilization in quantum dot lasers.
Nonlinear plasmonic metasurfaces using multiresonant surface lattice resonances
Authors: Reshef Orad , Saad-Bin-Alam Md , Chaitanya N. Apurv , Stolt Timo , Hogan Ryan , Karimi Mohammad , Alam M. Zahirul , Carlow Graham , Sullivan Brian T. , De Leon Israel , Menard Jean-Michel , Huttunen Mikko J. , Dolgaleva Ksenia , Boyd Robert W.
Published: September 2020

Surface lattice resonances exhibit the highest quality-factors in metasurfaces containing plasmonic nanoparticles. We present our recent results in developing multiresonant high-Q metasurfaces for various nonlinear applications, including efficient harmonic generation and optical-switching.
Mid-Infrared GeSn/SiGeSn Lasers and Photodetectors Monolithically Integrated on Silicon
Authors: Zhou Yiyin , Tran Huong , Du Wei , Liu Jifeng , Sun Greg , Soref Richard , Margetis Joe , Tolle John , Zhang Yong-Hang , Li Baohua , Mortazavi Mansour , Yu Shui-Qing
Published: September 2020

We demonstrated optically pumped GeSn lasers operating at 270 K and 3.5 µm, and photodetectors with spectral response cutoff at 3.65 µm and 300 K. Latest progress on electrically injected lasers will also be reported.
Design and fabrication of the vacuum ultraviolet nonlinear metasurfaces
Authors: Tseng Ming Lun , Semmlinger Michael , Yang Jian , Zhang Ming , Zhang Chao , Nordlander Peter , Halas Naomi J. , Tsai Din Ping
Published: September 2020

Nonlinear metasurface devices for generation and manipulation of coherent vacuum ultraviolet (VUV) light will be reported in this talk. The approaches for design, fabrication, and measurement of the metasurface devices with different working principles will be discussed. Our ultracompact metasurfaces are capable of efficiently generating VUV light via various nonlinear processes with effective nonlinear coefficients much better than general nonlinear medias in the targeted regime. They pave the way toward highly efficient and versatile miniaturized VUV nanodevices.
Viscous Maxwell-Chern-Simons Theory for Topological Photonics
Authors: Van Mechelen Todd , Jacob Zubin
Published: September 2020

Chern-Simons theories have been incredibly successful explaining integer and fractional quantum Hall phases, as well as topological insulators. Here, we develop viscous Maxwell-Chern-Simons theory to capture the fundamental physics of topological electromagnetic phases.
Long-range interactions near photonic Weyl points
Authors: Ying Lei , Zhou Ming , Mattei Michael , Liu Boyuan , Campagnola Paul , Goldsmith Randall H. , Yu Zongfu
Published: September 2020

A general relation between the resonant dipole-dipole interaction range and properties of the isosurface is described. This work lays the foundation to use Weyl photonic crystals as a platform to extend the interaction range.
Designer Structured Light with Metasurfaces
Authors: Capasso Federico
Published: September 2020

Metasurfaces are a powerful tool to design arbitrary vector beams. I will discuss recent work on spin to total orbital angular momentum converters, multimomentum metatransformers, high purity OAM lasing and transverse/longitudinal structured light generation
An Integrated Photonic Platform for Rare-Earth Ions in Thin Film Lithium Niobate
Authors: Dutta Subhojit , Goldschmidt Elizabeth A. , Barik Sabyasachi , Saha Uday , Waks Edo
Published: September 2020

We demonstrate an integrated photonic platform for rare earth ions in thin film lithium niobate. The ions in the thin film retain bulk like optical properties. This paves way for a new generation of highly scalable, active optoelectronic devices with applications to both classical and quantum optics.
Gate-Tunable Single-Photon Emitting Diode with an Extremely Low Tuning Time
Authors: Khramtsov Igor A. , Fedyanin Dmitry Yu.
Published: September 2020

We present a gate-tunable single-photon emitting diode based on a color center in 4H- SiC whose emission rate can be dynamically switched from 0.16 to 40 Mcps with a characteristic time of only 200 ps.
Klyshko efficiency optimization using a genetic algorithm
Authors: Sabines-Chesterking Javier , Moreau Paul-Antoine , McMillan Alex , Fickler Robert , Rarity John , Matthews Jonathan
Published: September 2020

We use a spatial light modulator and a genetic algorithm to manipulate the spatial profile of the pump beam of a down-conversion source in order to improve its Klyshko efficiency.
Plasmonic-assisted Mach-Zehnder Interferometric photonic sensor using aluminum waveguides
Authors: Chatzianagnostou E. , Manolis A. , Dabos G. , Ketzaki D. , Chmielak B. , Giesecke A.L. , Porschatis C. , Cegielski P. J. , Suckow S. , Markey L. , Weeber J.C. , Dereux A. , Schrittwieser S. , Heer R. , Pleros N. , Tsiokos D.
Published: September 2020

We demonstrate a CMOS compatible interferometric plasmo-photonic sensor exploiting SisN4 photonic and aluminum (Al) plasmonic stripe waveguides. Experimental evaluation revealed bulk sensitivity of 4764 nm/RIU, holding promise for ultra-sensitive and low cost sensing devices.
A Cylindrical Lens-based Integrated 2D Beam-steering Device Using Staircase Grating Emitters
Authors: Li Chao , Cao Xianyi , Cai Minglu , Wu Kan , Li Xinwan , Chen Jianping
Published: September 2020

A 15°*12° integrated two-dimensional beam-steering device based on an on-chip silicon-nitride switch/emitter structure and off-chip cylindrical lens is demonstrated. The staircase grating emitters allow a directional emission greater than 90%.
Robust Light Coupling to Photonic Crystal Waveguide Using Integrated Metalens
Authors: Xiao Yahui , Wang Zi , Wang Feifan , Lee Hwaseob , Kananen Thomas , Gu Tingyi
Published: September 2020

We demonstrate robust and low loss coupling into photonic crystal waveguide by using a one-dimensional dielectric metalens.
WS2 Monolayer Integrated Photodetector
Authors: Patil Chandraman , Maiti R. , Sorger Volker J.
Published: September 2020

Here, we demonstrate the fabrication of tungsten di-sulfide integrated photodetector on silicon nitride photonic platform. We observe high responsivity of ~100mA/W at exciton wavelength (~625 nm) due to strong photo-absorption.
An RF Photonic Phase Digital-to-analog Converter for Chirped Radar Applications
Authors: Li Jiading , Xue Xiaoxiao , Li Shangyuan , Zheng Xiaoping
Published: September 2020

A novel method of wideband radiofrequency signal generation is proposed based on photonic phase digitizing and heterodyne mixing. Synthesis of a linear frequency-modulated radar waveform with a bandwidth of 4 GHz is demonstrated.
Non-volatile Integrated Photonics enabled by Broadband Transparent Phase Change Material
Authors: Fang Zhuoran , Zheng Jiajiu , Majumdar Arka
Published: September 2020

We report a non-volatile integrated photonic platform enabled by the broadband transparent phase change material Sb2S3. Extreme low loss and non-volatile switching was demonstrated with <10 reduction in Q factor and over 30dBm extinction ratio.
Compact Design of On-chip Elman Optical Recurrent Neural Network
Authors: Feng Chenghao , Zhao Zheng , Ying Zhoufeng , Gu Jiaqi , Pan David Z , Chen Ray T
Published: September 2020

We propose an on-chip optical Elman recurrent neuron network (RNN) architecture for high-speed sequence processing using Mach-Zehnder interferometers and looped waveguides. The proposed design paves way for future integrated-photonics-based artificial intelligence hardware design.
Real-valued network for imaging through multimode fiber
Authors: Wang Ziyu , Xiang Yangyang , Lan Mingying , Li Junhui , Gao Li , Yu Song , Wu Guohua , Jiang Tianwei
Published: September 2020

A real-valued neural network overwhelmingly outyerforms its complex-valued counterpart in natural scene reconstruction through multimode fiber, suggesting that knowledge of intensity rather than phase information is enough, therefore brings much robustness and convenience in practice.
Evaluation of Lasing Temperature Characteristics of 1550nm QD-based-LDs by IID-QDI Technique with Ar and B Ions and High Temperature Stability
Authors: Matsumoto A. , Isawa S. , Kaneko R. , Akahane K. , Umezawa T. , Matsushima Y. , Utaka K.
Published: September 2020

We evaluated temperature characteristics of QD-based-LDs by ion-implantation- induced-disordering quantum-dot intermixing technique with Ar and B ions, and demonstrated high temperature stability with a characteristic temperature of 284 K and a wavelength shift of 0.15 nm/°C.
Transverse Mode Control in HCG-VCSELs
Authors: Ji Yipeng , Guan Mingyue , Qi Jipeng , Chang-Hasnain Connie J.
Published: September 2020

We present a detailed study to select transverse modes and control far field pattern of a multi-mode HCG-VCSEL using reflection dispersion for the former and angular-dependent transmission for the latter, for the first time.
Experimental Demonstration of Mid-Infrared Spontaneous Four-wave Mixing with A Tellurite All-solid Hybrid Microstructured Fiber
Authors: Nguyen Hoa Phuoc Trung , Saini Than Singh , Tuan Tong Hoang , Sakai Goichi , Matsumoto Morio , Suzuki Takenobu , Ohishi Yasutake
Published: September 2020

Spontaneous four-wave mixing in a novel tellurite fiber is demonstrated. Using a pumping laser at 1.9 um, a signal and an idler at 1.25 and 4.1 um are generated. This corresponds to a frequency shift of 85 THz which is the largest frequency shift in soft-glass fiber ever reported.
Transient Soliton Dynamics from Stationary to Pulsation in Fiber Laser
Authors: Huang Qianqian , Huang Zinan , Luo Zhichao , Mou Chengbo
Published: September 2020

We firstly report the transient soliton dynamics from stationary to pulsation via dispersive Fourier transformation. It is found that the soliton pulsation occurs accompanied with the generation of sub-sideband.
Generation of Path-Frequency Hyperentanglement by Simultaneous Multiple Quasi-Phase Matching in Nonlinear Photonic Crystals
Authors: Ding Yizhou , Xi Chaoxiang , He Guangqiang
Published: September 2020

By using multiple quasi-phase matching in the nonlinear photonic crystals (NPC) whose poling direction is perpendicular to the pump beam, we theoretically generated path-frequency hyperentangled photon pairs.
Nondegenerate optical nonlinearities in semiconductor quantum wells
Authors: Cox Nicholas , Wei Junxiong , Gorza Simon-Pierre , Hagan David , Van Stryland Eric W.
Published: September 2020

We present measurements of the nonlinear absorption and refraction of GaAs/AlGaAs quantum wells, and explore the fitness of this material system for nonlinear photonic devices.
A Universal Reconfigure Waveguide Coupler for Microresonators
Authors: Kim Dae-Gon , Han Sangyoon , Choi Duk-Yong , Lee Hansuek
Published: September 2020

We describe a universal, reconfigurable waveguide coupler based on an alignment-tolerant design to access microresonators. The coupler can be made of any material so as to cover a wide range of refractive index for phase-matching.
Optical frequency comb generation using low stress reactive sputtered silicon nitride waveguides
Authors: Frigg Andreas , Boes Andreas , Ren Guanghui , Nguyen Thach G. , Choi Duk-Yong , Gees Silvio , Moss David , Mitchell Arnan
Published: September 2020

We demonstrate fully CMOS-compatible anomalous dispersive SiN microring resonators with an intrinsic Q factor of 6.6 × 105 based on reactive sputtering SiN, yielding in a 250 nm wide modulation-instability frequency comb.
Chip-scale mode-configurable light couplers and vortex beam generators using waveguide-integrated metasurface
Authors: Meng Yuan , Liu Zhoutian , Xie Zhenwei , Hu Futai , Qi Tiancheng , Xiao Qirong , Kim Hyunseok , Bae Sang-Hoon , Fu Xing , Gong Mali , Yuan Xiaocong
Published: September 2020

Integrated mode-selective on-chip couplers are reported using Si-nanoantennas-patterned Si3N4 waveguide. A chip-integrated twisted-light generator coupling free-space light into optical vortex carrying 1ћ OAM is numerically demonstrated, by engineering spatial modal-overlap & controlled mode mixing.
Setting limits on two-photon absorption cross sections in common fluorescent molecules with entangled photon pairs excitation
Authors: Mikhaylov Alexander , Parzuchowski Kristen M. , Mazurek Michael D. , Wilson Ryan N. , Gerrits Thomas , Lum Daniel J. , Camp Charles H. , Stevens Martin J. , Jimenez Ralph
Published: September 2020

We present a detailed study of two-photon absorption in some common fluorescent molecules with excitation by entangled photon pairs. Using fluorescence and transmittance measurements, we set an upper bound on the absorption cross sections.
Relaxing symmetry rules for nonlinear optical interactions via strong-coupling in Bulk Transition Metal Dichalcogenides
Authors: Bushati Rezlind , Khatoniar Mandeep , Menon Vinod M.
Published: September 2020

We report enhanced second harmonic generation (SHG) from centrosymmetric bulk WSe2. This enhancement arises due to pumping in resonance with the Exciton-Polariton modes formed in self-hybridized bulk WSe2.
Overcoming detection losses in a supersensitive interferometer with coherent and squeezed vacuum inputs
Authors: Frascella Gaetano , Agne Sascha , Khalili Farid Ya. , Chekhova Maria V.
Published: September 2020

We report phase sensitivity overcoming the shot-noise limit by 3 dB for a squeezing-assisted interferometer with 50% detection losses. The performance is tolerant to losses up to 87% because of an optical parametric amplifier at the output.
EIT-like phenomena and characteristics of cavity optomechanics in a single cavity
Authors: Luo Yang , Chen Zhenmin , Li Qian , Fu H. Y.
Published: September 2020

We investigated the controllability of EIT-like phenomena in a single cavity by adjusting various parameters of the cavity for coupling. It provides a route on cavity optomechanics that could benefit quantum engineering.
Polarization-multiplexed continuous-variable quantum key distribution
Authors: Chu Binjie , Zhang Yichen , Xu Yifan , Yu Song
Published: September 2020

We first experimentally demonstrate a polarization-multiplexed continuous-variable quantum key distribution architecture eliminating the requirement for polarization controlling, where the polarization mixing and phase rotation are simultaneously compensated in a dual reference compensation scheme.
CHSH-nonlocality-breaking channels and their activation
Authors: Zhang Yujie , Bravo Rodrigo Araiza , Lorenz Virginia O. , Chitambar Eric
Published: September 2020

We characterize CHSH-breaking conditions for different qubit channels, and demonstrate that certain pairs of CHSH-breaking channels can be activated to become CHSH-nonlocality preserving when used in parallel, thus enabling CHSH-nonlocality distribution through noisy channels.
Low Group Index Optical Slot Structure for Efficient Optical Modulation
Authors: Jain Sourabh , Singh Lalit , Rajput Swati , Kumar Mukesh
Published: September 2020

Optical modulation based on traveling-wave electrode is proposed using slot-waveguide structure. With the help of high velocity-matching between microwave and optical modes, high data-rate of 40Gbps with the high extinction ratio of 8.7dB is obtained.
Polaron protected long-lived hot carriers in mixed cation and anion perovskite nanocrystals
Authors: Shrivastava Megha , Hazarika Abhijit , Beard Matthew C , Adarsh K.V.
Published: September 2020

We demonstrate protection of hot-carriers at nanosecond timescales via polaron formation in mixed cation and anion perovskite nanocrystals using ultrafast spectroscopy. The effective carrier protection precedes perovskite photovoltaic devices with efficiencies exceeding Shockley-Quisser limit.
CMOS-Compatible Metasurface-based Subtractive Color Filters on a 300-mm Glass Wafer
Authors: Xu Zhengji , Li Nanxi , Dong Yuan , Hu Ting , Zhong Qize , Kang Wei , Zhou Yanyan , Li Dongdong , Fu Yuan Hsing , Lin Qunying , Zhu Shiyang , Singh Navab
Published: September 2020

Si metasurface-based subtractive color filter (SCF) is demonstrated on a 300-mm glass wafer. The transmittance of periodic Si pillars is investigated both numerically and experimentally. The SCF-based pseudo color image is also presented.
Broadband Diffraction-Free Incoherent Space-Time Fields for Confocal Light-Sheet Microscopy Generated from a SLED
Authors: Motz Alyssa Allende , Yessenov Murat , Meem Monjurul , Menon Rajesh , Abouraddy Ayman F.
Published: September 2020

Confocal light sheet microscopes (CLSM) increase image field-of-view (FOV) and reduce acquisition time while maintaining optical sectioning. Implementation of broadband space-time fields in a CLSM enhances the FOV beyond the limitation of the Rayleigh range.
High-Efficiency Mid-Wave Infrared (MWIR) Sensors with Embedded Two Grating Layers for Gas Monitoring Applications
Authors: Zohar Moshe , Avrahamy Roy , Auslender Mark , Shikler Rafi
Published: September 2020

We suggest a novel design for CO
2
sensors. This design could be adjusted for various gas sensing approaches and other MWIR range applications, such as free-space communication, imaging systems, and light detection and ranging systems.
Blue Femtosecond Laser-Induced Crystallization of Amorphous Silicon
Authors: Chen Kuan-Wen , Wang Yi-Chao , Kao Shih-Hsuan , Wu Po-Hsun , Pan Ci-Ling
Published: September 2020

Amorphous silicon was crystallized using a blue ultrafast Ti:Sapphire laser system. Polysilicon with average grain size of 280 nm was achieved with fluence 30 of mJ/cm2 and overlapping of 93.75% at room temperature.
Quantum Information on Nonlinearly Coupled Optical Modes
Authors: Krastanov Stefan , Heuck Mikkel , Jacobs Kurt , Narang Prineha , Englund Dirk R.
Published: September 2020

Pursuing room-temperature quantum hardware, we discuss multi-mode optical cavities with nonlinear couplings and focus on material and fabrication requirements for such devices. We demonstrate their use for a number of quantum communication and computation tasks.
Optofluidic Fiber Component to Separate Micron-Sized Particles Using Elasto-Inertial Focusing
Authors: Harish A.V. , Kumar T. , Etcheverry S. , Russom A. , Margulis W. , Laurell F.
Published: September 2020

Using various fiber capillaries with different diameters and multiple holes we develop an optofluidic component capable of separating micron-sized beads emulating cells and bacteria, exploiting particle focusing in a viscoelastic fluid and analyzed optically.
Transient Nonlinear Refraction of Air in the Mid-IR
Authors: Tofighi Salimeh , Munera Natalia , Hagan David J. , Van Stryland Eric W.
Published: September 2020

By exciting in both the Near-IR and Mid-IR and probing in the mid-IR, using the polarization-resolved Beam Deflection Technique, the bound electronic nonlinear refractive index of air is measured below the ionization threshold.
Generation of Kerr frequency comb aligned with ITU-T DWDM grid for telecom applications
Authors: Ohtsuka Tamiki , Fujii Shun , Kumazaki Hajime , Wada Koshiro , Furusawa Kentaro , Sekine Norihiko , Tanabe Takasumi
Published: September 2020

We generated a Kerr frequency comb with a linewidth of 80 kHz by using a SiN microresonator and aligned the wavelengths with the ITU-T grid for telecom applications.
Magneto-dependent plasmon drag in permalloy structures
Authors: Shahabuddin Mohammad , Keene David W. , Durach Maxim , Noginova Natalia
Published: September 2020

Plasmon-enhanced photovoltages in 1D profile-modulated permalloy films strongly depend on magnetic field, with a characteristic hysteresis. The effect is discussed in terms of the anomalous Nernst effect.
Phase Manipulation by Dislocation of Two Plasmonic Nanohole Arrays
Authors: Lee Hyunsoo , Park Jongkyoon , Jeong Tae-In , Kim San , Ryu Hana , Kim Seungchul
Published: September 2020

The surface plasmons on the metallic nanohole induce nonlinear optical transmission and phase retardation of incident beam. We report that the phase can be precisely controlled by adjusting dislocation between two nanohole arrays.
Second-Harmonic Generation in Plasmonic Nanoarcs
Authors: Zhang Kunyi , Prakash Gyan , Murphy Thomas E. , Rabin Oded
Published: September 2020

Second-harmonic generation (SHG) from arrays of gold nanoarcs is systematically investigated as a function of excitation wavelength to understand the dependence of the SHG efficiency on the excitation of the fundamental localized surface plasmon resonance.
Metal-dielectric resonators for multimode, ultrafast all-optical switching in the NIR
Authors: Saha Soham , Dutta Aveek , Diroll Benjamin T. , DeVault Clayton , Kudyshev Zhaxylyk , Schaller Richard D. , Kildishev Alexander , Shalaev Vladimir M. , Boltasseva Alexandra
Published: September 2020

We experimentally demonstrate broadband, polarization-sensitive reflection modulation and picosecond relaxation-times with TiN-ZnO metal-dielectric resonators. We perform a rigorous investigation of the effects of pump-powers, probe-wavelengths, and polarizations on the device performance.
Manipulating the surface plasmon propagation by single hollow nanoparticle
Authors: Wei Ruxue , Sun Xuqing , Liu Hongyao , Jiang Liwen , Wang Xue , Wang Chang , Lu Xinchao , Huang Chengjun
Published: September 2020

We presented a method to manipulate the surface plasmon propagation by using the total reflection of single hollow nanoparticle. We used plasmonic imaging to observe the manipulation by single hollow nanoparticle in different surrounding medium.
Photonic Reservoir Computing enabled by Active Silicon Micro-Rings with Transparent Signal Injection
Authors: Li Shi , Dev Sourav , Jamshidi Kambiz , Pachnicke Stephan
Published: September 2020

Photonic masking enables fully transparent silicon micro-ring-based reservoir computing for channel equalization. We have evaluated the performance of micro-ring-based reservoir computing estimation for a 28GBd SSB PAM-4 transmission setup over 100km SSMF with Kramers-Kronig reception.
Optical Caching Network: A Seamless Bridge Between Electrical Packet Switching and Optical Circuit Switching
Authors: Luo Ruijie , Hua Nan , Zhu Kangqi , Zhao Chen , Guo Bingli , Yang Chuanchuan , Zheng Xiaoping
Published: September 2020

We propose a novel mechanism for instant access of latency-sensitive traffic using optical caching network. Lightpath setup delay can be avoided by caching-based optical circuit switching and the router workload can be reduced by 96%.
A Resilient Optical Satellite Signaling Network Architecture for Fast Convergence under Time-Varying Topologies
Authors: Zhao Chen , Hua Nan , Li Xin , Wang Tianliang , Zheng Xiaoping
Published: September 2020

We propose a novel information-diffusion-based resilient optical satellite signaling network architecture to support time-varying optical satellite network topologies. Results show that sub-second fast signaling convergence can be achieved under an emulated 54-node federal satellite system.
Frequency-Domain VFF-RLS Equalization for the Time-Varying Mode-Division Multiplexed Channels
Authors: Yu Wenbo , Yang Zhiqun , Wang Xutao , Zhang Lin , Li Guifang
Published: September 2020

An FD-VFF-RLS equalization, a DSP algorithm, with fast tracking capability for MDM links is proposed. We show that its Q2 factor has 4.5-dB gain compared with conventional FD-LMS when the evolution frequency of channel reaches 500 krad/s.
Multi-Spectral Regenerative Frequency Microcombs with Coherent Satellite Clusters
Authors: Yang Jinghui , Huang Shu-Wei , Xie Zhenda , Yu Mingbin , Kwong Dim-Lee , Wong Chee Wei
Published: September 2020

We report coherent satellites and dispersive waves in multi-spectral regenerative microcombs with enhanced intensities at the octave points and engineered frequency spanning. Regenerative satellite preserves coherence and mirrored appearance of dynamics with central comb through nonlinear parametric process.
Boardband Coherent Comb Generation in an All-NormalDispersion AlGaAs-on-Sapphire Waveguide
Authors: Cheng Yujun , Zheng Yi , Kim Chanju , Guan Pengyu , Yuan Jinhui , Oxenlnwe Leif K. , Yvind Kresten , Pu Minhao
Published: September 2020

We experimentally demonstrate coherent comb generation in a 5-mm long all-normaldispersion AlGaAs-on-sapphire waveguide with a 47% pump-to-comb conversion efficiency. We achieve a 20-dB bandwidth of 24.5 THz covering from the S- to U-band wavelength ranges.
Frequency Comb and Ultrashort Pulse Generation in a Normal-Dispersion FP Microresonator with Bandpass Filtering
Authors: Xiao Zeyu , Wu Kan , Chen Jianping
Published: September 2020

Frequency comb and ultrashort pulse generation in a normal-dispersion Fabry-Perot microresonator with bandpass filtering are demonstrated. The spectral filtering introduces different cavity dynamics and can support 371-fs pulse and parabolic spectral shape.
Enhanced self-phase modulation in silicon nanowires integrated with layered graphene oxide films
Authors: Zhang Yuning , Wu Jiayang , Yang Yunyi , Qu Yang , Moein Tania , Jia Baohua , Moss David J.
Published: September 2020

We experimentally demonstrate enhanced self-phase modulation in silicon nanowire waveguides integrated with layered graphene oxide films. We achieve spectral broadening of optical pulses in the GO-silicon waveguide with a broadening factor up to ~3.07.
TeO2-Coated Si3N4 Waveguides with Engineered Dispersion and Enhanced Nonlinearity
Authors: Mbonde Hamidu M. , Kiani Khadijeh Miarabbas , Frankis Henry C. , Bradley Jonathan D. B.
Published: September 2020

We present designs of TeO2-coated Si3N4 waveguides with engineered anomalous dispersion and calculated nonlinear parameter up to three times that of stoichiometric Si3N4. We observe four wave mixing in high-Q ring resonators on this platform.
Pulsed Terahertz Detection with a 95 dB Signal-to-Noise Ratio Using a Femtosecond Ytterbium-Doped Fiber Laser
Authors: Turan Deniz , Yardimci Nezih Tolga , Jarrahi Mona
Published: September 2020

We present a photoconductive terahertz detector that operates at ~1 μm pump wavelengths, offering a detection bandwidth exceeding 4 THz and a 95 dB signal-to-noise ratio, a 10-dB enhancement over the state-of-the-art detectors with similar bandwidth.
Dynamic THz dual-comb spectrometer: an optoelectronic fast interrogation approach
Authors: de Dios Cristina , Martin-Mateos Pedro , Jerez Borja , Betancur Andres , Barreiro Roberto , Acedo Pablo
Published: September 2020

We present an absolute-frequency THz dual-comb spectrometer based on electro-optic modulators that provides dynamic spectroscopic measurements with a temporal resolution of 1ms. This feature is complemented by ultra-narrow linewidth teeth and total control over central and repetition frequencies.
Broadband intense THz radiation from organic crystals driven by mid-infrared pulses
Authors: Gollner Claudia , Shalaby Mostafa , Kaksis Edgar , Astrauskas Ignas , Shumakova Valentina , Brodeur Corinne , Baltuska Andrius , Pugzlys Audrius
Published: September 2020

We report on unexpected efficient THz generation in organic crystals (DAST and DSTMS) by optical rectification (OR) of intense mid-infrared pulses. The crystals experience superior damage threshold and an ultra-broadband THz spectrum reaching 10 THz.
Detection Strategies for Measuring Rotation with the Rotational Doppler Effect
Authors: Anderson Alexander Q. , Strong Elizabeth F. , Heffernan Brendan M. , Siemens Mark E. , Rieker Gregory B. , Gopinath Juliet T.
Published: September 2020

We report sensitivity differences for two established techniques for measuring rotational Doppler shifts from randomly distributed scatterers. The phase sensitivity of heterodyne detection can measure targets with high scatterer density whereas the fringe method cannot.
A High-resolution Integrated Spectrometer based on cascaded a ring resonator and an AWG
Authors: Zhu H. H. , Zheng S. N. , Zou J. , Cai H. , Li Z. Y. , Liu A. Q.
Published: September 2020

A high-resolution integrated spectrometer consists of a cascaded microring resonator and an AWG is demonstrated and achieved a high resolution of 0.42 nm and bandwidth of 90 nm. It has high potential in biochemical sensing applications.
Towards polarization-based, low-latency quantum communication over hollow-core conjoined-tube fibers at around 800 nm
Authors: Chen Xin-Yu , Ding Wei , Wang Ying-Ying , Gao Shou-Fei , Xu Fei-Xiang , Xu Hui-Chao , Hong Yi-Feng , Sun Yi-Zhi , Wang Pu , Zhang Lijian
Published: September 2020

We experimentally demonstrate high-fidelity (~0.98), polarization-based single-photon transmission and entanglement distribution over a 36-meter-long, low-loss (<10 dB/km), 800 nm- guiding hollow-core conjoined-tube fiber quantum channel, which inherently possesses low transmission latency.
Coupling assisted high efficiency sorting of spherical and rod-shaped bacteria in an optofluidic chip
Authors: Shi Y. Z , Zhang Y. , Yap P. H. , Liu A. Q.
Published: September 2020

We present a nano-photonic lattice to sort bacteria with equivalent size but different shapes. It has an ultra-sensitive trapping capability for the two bacteria with S. aureus above 95% and E. coli less than 3%.
Hybrid Photonic Crystal-Plasmonic Lab-on-chip Device using TLC-SERS for Multiple Chemical Sensing
Authors: Sivashanmugan Kundan , Squire Kenneth , Zhang Boxin , Wang Alan X
Published: September 2020

By coupling surface-enhanced Raman spectroscopy (SERS) with thin-layer chromatography, hybrid photonic crystal- plasmonic devices provide lab-on-a-chip functionalities for separating and detecting multiple chemical targets in a complex solution.
Mid-infrared Absorption of Femtosecond Laser Microstructured Silicon Formed in Different Gas Ambient
Authors: Haibin Sun , Shengli Sun , Fuchu Chen , li Zhao , Guifu Wang
Published: September 2020

We researched the mid-infrared absorption changes of micro-structured silicon prepared in SF6, N2, and NF3, the different changes mainly due to the concentrations of impurities doped in surface layer.
AS2S3 Glass Mid-IR Transmission Enhancement with Femtosecond Laser Treatment
Authors: Bushunov Andrey A. , Teslenko Andrei A. , Tarabrin Mikhail K. , Lazarev Vladimir A. , Snopatin Gennady E. , Koltashev Vasilii V. , Plotnichenko Victor G.
Published: September 2020

We report on AS2S3 glass surface transmission increase from 82.5% to 92% in range from 3 to 5 pm through femtosecond pulsed laser treatment.
Super Black Stainless Steel Surface Fabricated by Nanosecond Laser Irradiation
Authors: Taher Md Abu , Naraharisetty Sri Ram G , Rao D Narayana
Published: September 2020

Super-black stainless-steel (SS) surfaces were prepared by nanosecond laser irradiation giving low reflectivities close to 0.5% over broad wavelength range of 250-1800 nm and even lower (0.14%) over 250-850 nm.
The influence of atmospheric helium on secondary clocks
Authors: Chen K. –H. , Wu C. -M. , Wu S. -R. , Yu H. –H. , Liu T. -W. , Cheng W. -Y.
Published: September 2020

We report a new error source for the frequency of glass-cell based secondary time-frequency standards. That is, a frequency shift by helium collision was perceived where the helium atoms were confirmed as from the atmosphere.
Space-Very Long Baseline Interferometry Mission Requirements Analysis on Space Borne Frequency Standards and Optical Frequency Combs
Authors: Yi Lin , Burt Eric A. , Zhang Wei
Published: September 2020

Low phase noise microwave frequency generation with low power and miniahrrized optical frequency comb may greatly impact future space-based Veiy Long Baseline Interferometiy (WEI) missions. In this paper, we will show our analysis of the frequency and timing requirements on frequency standards and optical frequency combs for the future space mission. Copyright 2019 California Institute of Technology.
Ultra-fast Waveform Measurement in Single-shot Using Optical Frequency Comb Analyzer
Authors: Tada Hiroaki , Yuda Leona , Sultana Nasrin , Imai Hayate , Shioda Tatsutoshi
Published: September 2020

The 2.7ps time resolution of single shot waveform measurement was experimentally performed by measuring on frequency domain using improved optical frequency comb analyzer based on dual-heterodyne mixing in time-division multiplexing.
Compact Solid-state Laser With Novel Yb:YAG/YAG Pyramidal Active-mirror
Authors: Wang Peng , Niu Yanxiong , Zhang Chunxi , Feng Di
Published: September 2020

A compact solid-state laser based on a novel composite Yb:YAG/YAG pyramidal active-mirror is proposed with a folded cavity optical structure. Numerical simulation results predict pulse energy of 10.57mJ with 16.02% optical efficiency obtained.
Stable and Ultra-narrow Linewidth Random Fiber Laser Based on Random Fiber Bragg gratings
Authors: Hu Jie , Wang Yifei , Xing Zhikun , Li Tongda , Wang Zhen , Yan Zhijun , Sun Qizhen , Liu Deming
Published: September 2020

We propose a stable random fiber Bragg grating based random fiber laser with ring cavity. The linewidth is only 1.63 kHz, which is the narrowest in Random fiber laser to the best of our knowledge.
Suppression of Transverse Mode Instability in Ring-core Fiber
Authors: Xia Nan , Yoo Seongwoo
Published: September 2020

We theoretically investigate transverse mode instability (TMI) in ytterbium doped ringcore fiber. The unique geometry reduces thermal load and enhances gain saturation effect, leading to large suppression of TMI. Gaussian-like beam is formed at far-field.
Low-cost mid-infrared polarizer based on direct coupling to surface-plasmon polaritons
Authors: Shahsafi Alireza , Salman Jad , Rubio Perez Bryan E. , Xiao Yuzhe , Wan Chenghao , Kats Mikhail A.
Published: September 2020

We report a new type of reflective polarizer based on free-space coupling to surface-plasmon polaritons that has a high extinction ratio and high efficiency at infrared frequencies.
Angle Tolerant Mid-Infrared Notch filters using Two-dimensional Amorphous Germanium High Index Contrast Sub-wavelength Gratings
Authors: S Lal Krishna A , Mere Viphretuo , Selvaraja Shankar Kumar , Raghunathan Varun
Published: September 2020

We experimentally demonstrated polarization independent, angle tolerant mid-infrared notch filters using amorphous-Germanium 2D high contrast gratings. Centered at 7.42 pm wavelength, the filter exhibits wide field-of-view notch filtering characteristics across 0 to 30o incidence angles.
Generalized Class of Kerker Particles: Self-Duality and Zero Backscattering
Authors: Estakhri Nasim Mohammadi , Kastner Raphael , Engheta Nader
Published: September 2020

We introduce a generalized class of arbitrarily sized/shaped particles that satisfy the Kerker zero backscattering condition for normal incidence for all incident polarizations. We prove that self-duality is a sufficient condition to achieve zero backscattering.
High-contrast structural color based on photonic glass from coreshell particles
Authors: Petrov Alexander Yu. , Shang Guoliang , Maiwald Lukas , Eich Manfred
Published: September 2020

Photonic glass provides angle-independent, spectrally selective scattering that can be used as structural colors. We show how the core-shell geometry of the particles can be used to improve the saturation of blue color.
Tunable Ultrahigh-saturation Structural Colors From Toroidal Resonances by Phase-change Material Sb2S3 Metasurfaces
Authors: Hemmatyar Omid , Brown Tyler , Adibi Ali
Published: September 2020

Leveraging sharp toroidal resonances supported by an all-dielectric metasurface (MS) made of high-index phase-change material Sb2S3 nanopillars (NPs), we demonstrate tunable ultrahighly saturated structural color with unprecendted large color gamut.
Emission in Fabry-Perot Cavities in Weak and Strong Coupling Regimes
Authors: Faruk Md Omar , Jerop Nelly , Noginov Mikhail A.
Published: September 2020

We have studied spectra and angular distribution of emission of Rhodamine 6G dye in Fabry-Perot cavities in weak and strong coupling regimes and demonstrated control of the strong coupling with the pumping intensity.
Fading Noise Free Distributed Acoustic Sensor Assisted with Double Wavelength lasers
Authors: Liu Tao , Li Hao , He Tao , Fan Cunzheng , Yan Zhijun , Liu Deming , Sun Qizhen
Published: September 2020

We propose a fading free distributed acoustic sensor assisted with the scattering enhanced optical fiber and double wavelength lasers. The random polarization fading is effectively eliminated by synthesizing the scattering signals of two lasers.
Dual-band synchronization of fiber lasers through a common black phosphorus saturable absorber
Authors: Lian X. , Hu G. , Jin X. , Zhang M. , Zhang Q. , Zheng Z. , Hasan T.
Published: September 2020

We present the dual-band synchronization of two all-fiber mode-locked lasers, operating at 1.53-μm and 1.91-μm, using a common black phosphorus saturable absorber. This synchronized dual-wavelength laser shows a large cavity mismatch of 1.98 mm.
Highly customizable all polarization maintaining wavelength switchable mode-locked fiber laser based on thermally controlled Lyot-filter
Authors: Sun Xiangnan , Zhu Yuanjun , Sugiura Yohei , Yamashita Shinji , Set Sze Y.
Published: September 2020

We demonstrate for the first time a highly customizable all polarization maintaining wavelength switchable mode-locked fiber laser by utilizing thermally controlled Lyot-filter, which delivers a 25nm tunable oujmt from 1546nm to 1571nm and a dual-wavelength outyut with central wavelength at 1545nm and 1571nm.
Non-invasive imaging based on low spatial coherence multimode random fiber laser illumination
Authors: Wang Zhao , Ma Rui , Wang Shan Shan , Zhang Wei Li , Rao Yun Jiang
Published: September 2020

Non-invasive imaging through low spatial coherence light source based on multimode random fiber laser is proposed and demonstrated. A much simpler, robust and highly efficient structure is realized benefiting from the optical fiber based illumination.
A robust, field-deployable, low-cost mode-locked laser oscillator for real-world frequency comb experiments
Authors: Timmers Henry , Tooley Dylan , Sodergren Bennett , Robinson Ryan , Vogel Kurt , Knabe Kevin
Published: September 2020

A low-volume mode-locked oscillator has been designed for environmental robustness and is suitable for frequency comb applications. Performance metrics include signal-to-noise ratios greater than 40 dB and in-loop Allan Deviations below 1 x 10-16/Vr.
3D Kerr Microscopy of Magnetic Vortex States in the Presence and Absence of Uniaxial Anisotropy
Authors: Mehrnia Mahdi , Trimble Jeremy , Berezovsky Jesse
Published: September 2020

We use a 3D scanning Kerr microscopy technique to resolve the 3D magnetization response in both equilibrium and non-equilibrium regimes for micron-sized permalloy disks. Moreover, we show the effect of uniaxial anisotropy in both regimes.
Coherent stacking of 128 pulses from a GHz repetition rate femtosecond Yb:fiber laser
Authors: Yang Bowei , Liu Guanyu , Abulikemu Abuduweili , Wang Yan , Wang Aimin , Zhang Zhigang
Published: September 2020

We demonstrate for the first time the coherent staking of 128 pulses from a 0.95 GHz repetition rate femtosecond Yb:fiber laser by delay line and polarization control.
Transition Matrix Element and Recombination Mechanism of Hexagonal SiGe.
Authors: Dijkstra A. , Tilburg M.A.J. v. , Fadaly E.M.T. , Lange V.T. v. , Verheijen M. A. , Suckert J.R. , Rodl C. , FurthmUller J. , Bechstedt F. , Botti S. , Busse D. , Finley J.J. , Bakkers E.P.A.M. , Haverkort J.E.M.
Published: September 2020

Hexagonal SiGe is a direct bandgap semiconductor due to zone folding. A Lasher- Stern-Wurfel fit of the photoluminescence spectrum unambiguously confirms band- to-band recombination. The transition matrix elements are large since the translational symmetry is broken.
Optical confinement in the nanocoax: coupling to the fundamental TEM-like mode
Authors: Calm Yitzi M. , D’Imperio Luke , Nesbitt Nathan T. , Merlo Juan M. , Rose Aaron H. , Yang Chaobin , Kempa Krzysztof , Burns Michael J. , Naughton Michael J.
Published: September 2020

The nanoscale coaxial cable (nanocoax) has demonstrated optical confinement in the visible and the near infrared. We report on a novel nanofabrication process which yields optically addressable, sub-µm diameter, and high aspect ratio metal-insulator-metal nanocoaxes made by atomic layer deposition of Pt and Al2O3. We observe sub-diffraction-limited optical transmission via the fundamental, TEM-like mode by excitation with a radially polarized optical vortex beam. Our experimental results are based on interrogation with a polarimetric imager. Finite element method numerical simulations support these results, and their uniaxial symmetry was exploited to model taper geometries with both an electrically large volume, (15λ)3, and a nanoscopic exit aperture, (λ/200)2.
Supercontinuum generation in tantalum pentoxide waveguides for pump wavelengths in the 900 nm to 1500 nm spectral region
Authors: Woods Jonathan R. C. , Daykin Jake , Tong Amy S. K. , Lacava Cosimo , Petropoulos Periklis , Tropper Anne C. , Horak Peter , Wilkinson James S. , Apostolopoulos Vasilis
Published: September 2020

We characterize the spectral broadening performance in silica clad and unclad Tantalum pentoxide (Ta2O5) waveguides as a function of the input pulse central wavelength and polarization, sweeping over a wavelength range from 900 nm to 1500 nm, with an average incident power of 110 mW. The waveguides are 0.7 µm high and between 2.2 and 3.2 µm wide, and the SiO2 top cladding layer is 2 µm thick. We model the dispersion of the higher order spatial modes, and use numerical simulations based on the generalized nonlinear Schrödinger equation to analyze the nonlinear behaviour of the spatial modes within the waveguides as well as the dispersive effects observed in the experiments. We achieve octave spanning supercontinuum with an average power of 175 mW incident on the waveguide at 1000 nm pump wavelength.