bluuebunny/crossref_metadata_2025 huggingface dataset:
Fiber Optic Seismometer Based on Nonlinear Control Interferometry
Authors: Nunes Gabriel F. S. , Ettori Rafael C. , Sakamoto João M. S.
Published: January 2023

A fiber optic seismometer based on a Mach-Zehnder interferometer with variable structure and sliding modes nonlinear control was evaluated and showed potential for space application as detection of marsquake or meteorite impact.
Achromatic Metalens Arrays for Enhanced Free-Space Coupling with Photonic Integrated Circuits
Authors: Kochan Nicholas S. , Simmons Evan L. , Dorsey Kyle J. , Woolf David N.
Published: January 2023

Metalens arrays provide alternatives to microlenses, with tailorable array periods, numerical apertures, and bandwidths. Here, we show how they can work in concert with grating couplers to improve the free-space coupling of photonic integrated circuits.
Simulating Multi-Level Structures for Structured Light With a Spatial Light Modulator
Authors: Mohapi Lehloa , Dudley Angela , Forbes Andrew
Published: January 2023

Diffractive optical elements are advantageous due to high power thresholds, but are expensive with the increasing modulation steps. We use SLMs as a guide to experimentally evaluate the steps needed for different structured modes.
A New Screening Methodology for THz Generation Crystals
Authors: Ho (Enoch) Sin-Hang , Valdivia-Berroeta Gabriel A. , Rader Claire , Green Natalie K. , Ludlow Daisy J. , Petersen Paige , Chartrand Caitlin , Barlow Connor , Smith Stacey J. , Michaelis David J. , Johnson Jeremy A.
Published: January 2023

We discover, develop, and test new organic nonlinear optical crystals that produce intense pulses of terahertz radiation through a combination of data mining from Cambridge Structural Database and density functional theory calculations.
Increasing the precision of a spatial light modulator using irrational linear slopes
Authors: Harrison Geoffrey R. , Saule Tobias , Davis Brandin , Trallero-Herrero Carlos A
Published: January 2023

We present a method to increase the effective phase bit-depth of spatial light modulators which utilizes an irrational linear slope. The effectiveness of this technique was demonstrated using a precise interferometric transient absorption spectroscopy setup.
Emerging Aspects of Optical Beam Shifts
Authors: Modak Niladri , Ashutosh S , Ghosh Sayan , Guchhait Shyamal , Das Sayantan , Ghosh Nirmalya
Published: January 2023

We indicate the possible expansion of the domain of optical beam shits to demonstrate exotic physical effects, such as, demonstration of joint correlation of the beam shifts, and mimicking PT symmetric systems.
Universal Multi-mode Linear Optical Quantum Operation in Time Domain
Authors: Yonezu Kazuma , Enomoto Yutaro , Yoshida Takato , Takeda Shuntaro
Published: January 2023

We demonstrate a universal multi-mode linear optical quantum operation in the time domain using a scalable and programmable dual-loop-based optical circuit. This work holds great promise for time-multiplexed large-scale optical quantum information processing.
An efficient fiber-integrated broadband source of telecom photon-pairs
Authors: Yadav Vikash Kumar , Venkataraman Vivek , Ghosh Joyee
Published: January 2023

We report an efficient source of correlated photons spanning the C- & L-bands of the telecom spectrum with a coincidence-to-accidental ratio (CAR) > 1300 and spectral brightness 2.5x107 pairs/s/mW/nm using a fiber-pigtailed Zn-indiffused MgO:PPLN ridgewaveguide.
Quantum interference effect induced the terahertz generation in Bi2S3 film
Authors: He Yuhang , Chen Yuxuan , Tian Zhen , Dai Jianming
Published: January 2023

Utilizing the two-color light to illuminate the Bi2S3 film, we have observed the terahertz (THz) radiation. We attribute the mechanism of the THz generation to the one-plus-two photon absorption quantum interference effect.
Increasing Communication Rates Using Photonic Hyperentangled States
Authors: Nemirovsky-Levy Liat , Pereg Uzi , Segev Mordechai
Published: January 2023

We propose a mechanism for increasing transmission rate of quantum communication channels, by multiplexing spin and multiple orbital angular momentum states on a single photon, transmitting the photon, and demultiplexing them to different photons.
Boosting Non-Reciprocity of Magneto-Optic Materials as a Surface Phenomenon
Authors: Dash Sushree S , Mukherjee Pinaki , Levy Miguel , Rosenberg Richard , Haskel Daniel
Published: January 2023

Surface reconstruction and electronic transitions were examined. Experiments and computational analysis were conducted to study the surface effects compared to the bulk. Previous results, like XMCD, XAS, and S-TEM, were considered for further analysis.
Scintillation index evolution of Pearcey vortex beam through atmospheric turbulence
Authors: Singh Shakti , Mishra Sanjay Kumar , Mishra Akhilesh Kumar
Published: January 2023

We have numerically studied the propagation of truncated Pearcey vortex beam through atmospheric turbulence using Von Karman power spectral density and report that the apertured average scintillation index saturates quickly in strong turbulence.
Actively controlled two bit Binary Coding in Graphene assisted Terahertz Metasurface
Authors: Dhriti KM , Kumar Gagan
Published: January 2023

A two bit binary coder based on graphene assisted terahertz (THz) metasurface is demonstrated. By tuning the Fermi energy, four different binary codes are obtained in the transmission which could be useful in THz communication.
Inverse design of a 4-way crossing for integration of anisotropic materials on silicon waveguides
Authors: Villegas Juan Esteban , Dushaq Ghada , Rasras Mahmoud
Published: January 2023

We present a compact (6.5 x 6.5 μm) silicon photonics design of a 4-way crossing with minimized cross-talk <20 dB in all ports and an area of only 19.86 µm2. The design was realized using gradient descent shape optimization and the adjoint method. It is manufactured using e-beam lithography and characterized for the C-and L-bands.
Transparent glass materials for gamma radiation shielding
Authors: Vallejo-Hernández Miguel Ángel , Elías Janet
Published: January 2023

Glass matrices with transition metals were synthesized. Radiation shielding and optical parameters are studied. We show the characteristic surface-plasmon bands Radiation shielding parameters were calculated to analyze which sample has the best radiation shielding response.
Estimation Method of Light Source Position for Linear-type Sensor
Authors: Cho Hanjin , Lee Siwoo , Lee Byoungho
Published: January 2023

A proposed method that can be applied to light sources illuminating toward the center of the sensor with limited divergence is estimating the light source position using a single line image from the linear-type sensor.
Enhancing Photodynamic Therapy of Cancer by Intracellular Delivery of Photosensitizer
Authors: Chizenga Elvin Peter , Abrahamse Heidi
Published: January 2023

Immunogenic proteins in cancer are relevant targets for drug delivery. A multifunctional photo-activating compound directed to such proteins was developed for Photodynamic Therapy of Human Papillomavirus-transformed cancer cells. Selective binding increased therapeutic efficacy by two-folds.
Crosstalk and Image Duplicate Mitigation in Liquid Crystal on Silicon Spatial Light Modulators
Authors: Starobrat Joanna , Makowski Michał
Published: January 2023

Miniaturization of spatial light modulators is necessary for achieving higher diffraction angles. We propose an amplitude-and-phase apodization method for mitigating the consequently strengthened crosstalk and reducing visibility of ghost images in Fourier hologram reconstructions, showing both simulation and experimental results.
Enhanced Surface Contributions to Second Harmonic Generation in non-Centrosymmetric Crystals
Authors: Dehghani Moigan , Haber Louis H. , Zhang Jiandi
Published: January 2023

In non-centrosymmetric crystals, the surface contributions to second harmonic generation are mainly overwhelmed by the strong bulk contributions. We demonstrate that a femtosecond amplifier laser can enhance the surface contributions to second harmonic signal.
Long-range propagation of exciton polaritons in 2D semiconductor monolayers at room temperature
Authors: Liu Bin , Zhao Haonan , Forrest Stephen R.
Published: January 2023

In the light-matter strong coupling regime, we observe long-range exciton-polariton propagation in monolayer transition metal dichalcogenides at room temperature, where the propagation distance depends on the Bloch surface wave supported by all-dielectric photonic structures.
Enhancing speckle statistics for imaging inside scattering media
Authors: Chen Wei-Yu , O’Toole Matthew , Sankaranarayanan Aswin C. , Levin Anat
Published: January 2023

We propose a new modulation scheme that allows enhancing memory effect correlations in speckle images produced by mutually incoherent sources. We use this to recover fluorescent sources behind scattering tissue.
Intuitive Analytic Calculations of Spatio-Temporal Propagation of General Spatially Chirped Beams
Authors: Wilhelm Alex , Hunt Patrick , Adams Daniel , Durfee Charles
Published: January 2023

We generalize our method for propagating spatially chirped Gaussian beams to properly calculate the evolution of geometric spectral phase through a lens. By expanding the spectral phase around the local central frequency, we analytically calculate the spatio-temporal field. Applications to intentionally detuned pulse compressors are discussed.
Hilbert hotel realization using Poincare Bessel beam
Authors: Kumar Subith , Pal Anupam , Shiri Arash , Samantaand Greg Gbur G. K.
Published: January 2023

We report the first experimental demonstration of the Hilbert hotel paradox using the Poincare Bessel beam having infinite pair of c-point singularities using the intrinsic self-healing property of the Bessel beam.
A Study to Investigate Monolayer-Silicene’s Ability to Realize Tuneable Beam Shifts
Authors: Shah Muzamil , Mehmood Muhammad Qasim , Massoud Yehia
Published: January 2023

We theoretically predict the tunable mechanical beam shifts on the surface of monolayer silicene in the presence of optical and electric fields. This unique ability of monolayer silicene can find exciting applications in biosensing and information processing.
Arbitrary-dimensional reconciliation protocol for continuous-variable quantum key distribution
Authors: Zhao Yin , Wang Xiangyu , Chen Ziyang , Yu Song , Guo Hong
Published: January 2023

We report an arbitrary dimensional reconciliation protocol based on elementary reflection transformation, improving the reconciliation efficiency by 3% averagely and obtaining about 50% of improvement of decoding success rate.
Dark Soliton Analysis in Highly Nonlinear Fiber with Optical and Raman Gain
Authors: Kim J. , Kim J. , Park K. , Jeong Y.
Published: January 2023

The evolution of dark solitons in highly nonlinear fiber with optical and Raman gain is analytically and numerically studied. From nonlinear Schrödinger equation, a set of rigorous equations describe dark solitons along with Raman shockwaves.
Parallel Mach-Zehnder interferometers for strain detection based on Vernier effect
Authors: Guzmán-Cano Miguel C. , Marrujo-García Sigifredo , Hernández-Romano Iván , López-Cortés Daniel , May-Arrioja Daniel A. , Torres-Cisneros Miguel , Monzón-Hernández David , Villatoro Joel
Published: January 2023

A fiber optic strain sensor, based on the Vernier effect, was constructed using two parallel MZIs. The strain sensitivity of one MZI was 0.84 pm/µε, using this configuration the sensitivity increased up to 13.00 pm/µε.
Realization of flatband-type edge states due to nontrivial winding in photonic graphene
Authors: Xia Shiqi , Liang Yongsheng , Song Daohong , Chen Zhigang
Published: January 2023

We demonstrate a new type of edge states in photonic graphene, residing across entire Brillouin zone and topologically protected by the winding number. Compact localized edge states associated with flat dispersion are also observed.
Design and Simulation of Micropillar based Microfluidic platform for the growth of Organoids in-line with Drug Testing
Authors: Madhurima Pabitraa , Ahmadsaidulu Shaik , Banik Oindrila , Banoth Earu
Published: January 2023

Models derived from the latter, such as spheroids or organoids are more similar to the in-vivo environment and thus should be considered for drug testing. When entwined with a microfluidic platform imply powerful assay advantages like control media flow, minute cell, and reagents requisition during the culture. In this work, the novel approach is to cultivate healthy and diseased organoids in the same microfluidic platform through a controlled microvalve. Design and simulation are performed using AUTOCAD, CLEWIN, and COMSOL. The novel micropillar microfluidic device was fabricated using photolithography followed by soft lithography. The fabricated device is temporarily bonded to a glass slide through the double tape to check the fluid flow. The phenomenon is visualized by subjecting a solution of methylene blue across the device.
On-Chip Mid-Infrared Supercontinuum Generation in Silicon Germanium waveguide
Authors: Munsaka Proficiency , Baricholo Peter , Rohwer Erich G. , Bosman Gurthwin W.
Published: January 2023

We report the simulation of supercontinuum generation from 2.61 to 8.15 μm in silicon germanium waveguide through resolution of the generalized nonlinear Schrödinger equation using the fourth order Runge-Kutta in the interaction picture method.
Single-Functional-Unit Level Integration of Electronic and Photonic Elements: FET-LET Hybrid 6T SRAM with Greatly Improved Performance in Speed and Energy
Authors: Pal Antardipan , Zhang Yong , Yau Dennis D.
Published: January 2023

Photonic integration is typically limited to the communication between electronic sub-systems on a chip. A novel approach to achieve single-functional-unit level integration of electronic and photonic components is proposed, illustrated by FET-LET hybrid 6T SRAM.
Evaluation of Nd:YAG Laser-irradiated Tissue Ablation and Thermal Effects on Muscular Tissues
Authors: Santamaría-Bustamante L. , Isla-Calvo Á. , Arce-Diego J. L. , Fanjul-Vélez F.
Published: January 2023

Optical sources on biological tissues can provoke ablation or thermal effects, whose appropriate evaluation is critical to treatment planning and harmful collateral effects avoidance. Experimental analysis and optical properties discrimination are employed to this aim.
Exponentially-wide étendue displays using a tilting cascade
Authors: Monin Sagi , Sankaranarayanan Aswin C. , Levin Anat
Published: January 2023

Holographic displays based on spatial light modulators, suffer from limited étendue. We suggest introducing tiltable pixels for increased étendue. We built a prototype constructed of multiple binary tilt layers and demonstrate applications of the device.
Selective sound field imaging by parallel phase-shifting digital holography with time-frequency filtering
Authors: Notte Shun , Hashimoto Sota , Inoue Tomoyoshi , Nishio Kenzo , Xia Peng , Rajput Sudheesh K. , Matoba Osamu , Awatsuji Yasuhiro
Published: January 2023

We proposed an optical method for imaging of a motion picture of sounds for selected frequency. We recorded three sounds of frequencies 39.5, 40.0, and 40.5 kHz with the frame rate of 100,000 fps by parallel phase-shifting digital holography and succeeded in imaging the sound for selected frequency.
Visualization of Underwater Acoustic Impulse Propagation and Interaction Across the Water-Rigid Boundary Using Finite Element Analysis
Authors: Yellaiah J.
Published: January 2023

This study presents the simulated and visualized underwater acoustic impulse propagation, and interaction across the water-rigid boundary using finite element analysis. The experimentally acquired laser-induced underwater acoustic impulse data is used for simulations.
Simultaneous self-injection locking of two Fabry-Pérot laser diodes to Si3N4 integrated microresonator
Authors: Chermoshentsev Dmitry A. , Shitikov Artem E. , Lonshakov Evgenii A. , Grechko Georgii V. , Sazhina Ekaterina A. , Kondratiev Nikita M. , Lobanov Valery E. , Masalov Anatoly V. , Bilenko Igor A. , Lvovsky Alexander I. , Ulanov Alexander E.
Published: January 2023

Simultaneous self-injection locking of two Fabry-Pérot laser diodes to different modes of an integrated Si3N4 microresonator is under study in this work either theoretically and experimentally. Different phenomena, like nonlinear interaction, simultaneous stabilization and coherent addition were observed and investigated.
Spectroscopic Approach to Study Inhibition Effect of Coumarin 440 on Bovine Pancreas Trypsin
Authors: Altafhusain  , Sannaikar M. S. , Inamdar Laxmi S. , Inamdar Sanjeev R.
Published: January 2023

Spectroscopic investigation done to understand inhibition effect of coumarin 440 dye on Bovine pancreas Trypsin by employing steady state measurements along with small molecular docking studies done to apprehend binding sites for possible interaction pose.
Non-Cubic Eightfold Constellation for High-Performance Stokes Vector Modulation
Authors: Feuer Mark D. , Bnyamin Mario V. , Jiang Xin
Published: January 2023

A novel non-cubic constellation for eightfold Stokes vector modulation improves modulation loss, link budget, and intersymbol interference at high speed, while using simpler drive signals. Experiments confirm 5.2 dB improvement at 30 Gb/s.
High harmonic generation in graphene heterostructures: challenge and perspective
Authors: Bajo Josip , Jenke Philipp K. , Calafell Irati Alonso , Trenti Alessandro , Rozema Lee , Walther Philip
Published: January 2023

With the advent of novel 2D materials and their rich optical and electronic properties, nonlinear interactions in these systems are receiving great attention due to the scalability potential and production of nanoscale nonlinear devices for applications in frequency conversion devices, advanced laser systems and quantum technologies research and applications.
Metasurface-enabled wide-angle stereoscopic imaging
Authors: Shalaginov Mikhail Y. , Lin Hung-I , Yang Fan , Weninger Drew M. , Li Crystal , Agarwal Anuradha M. , Hu Juejun , Gu Tian
Published: January 2023

We demonstrated metasurface-based stereoscopic 3-D depth imaging featuring a record wide field-of-view of 170°.
Deep learning-assisted 3D virtual staining for the study of adipogenesis
Authors: Kim Jeong Hee , Liu Zhenhui , Barman Ishan
Published: January 2023

Here, we develop a deep learning-powered 3D virtual fluorescence staining approach from label-free quantitative phase images to accurately discriminate between adipocyte cell structures.
Fabrication and supercontinuum generation in a chalcogenide all-solid hybrid microstructured optical fiber with polarization maintaining properties
Authors: Tuan Tong Hoang , Koumura Ayaka , Nakatani Asuka , Nguyen Hoa Phuoc Trung , Matsumoto Morio , Sakai Goichi , Suzuki Takenobu , Ohishi Yasutake
Published: January 2023

We report a successful fabrication of a chalcogenide all-solid hybrid microstructured optical fiber. The polarization maintaining properties of the fiber is confirmed and a broadband supercontinuum spectrum from 2 to 10 µm is experimentally demonstrated.
Scoring based genetic algorithm for wavefront shaping to optimize multiple objectives
Authors: Wang Tianhong , Rumman Nazifa , Bassène Pascal , N’Gom Moussa
Published: January 2023

We present a scoring based genetic algorithm (GA) for wavefront shaping to obtain multiple objectives simultaneously. The algorithm treats a multi-objective optimization problem as a single objective one, hence is much simpler to implement.
Atomically Thin Chalcogenide films for Super-Resolved Direct Laser structuring
Authors: Kandy Arjun Karimbana , Lumeau Julien , Natoli Jean-Yves , Iliopoulos Konstantinos
Published: January 2023

Thickness-dependent saturable absorption behaviour of atomically thin Bismuth Selenide films has been studied at two different wavelengths. Giant responses have been recorded for films with thickness lower than 10 nm at 515 nm excitation wavelength.
Optocoupler Modeling for Quantum Random Code Generation
Authors: Maleki Morteza
Published: January 2023

An optocoupler is modeled using randomized dipole point locations with nonpolarized photons, within an LED’s distributed wavelength spectrum. The emitted light is detected inside the photodetector, whose photocurrent represents the quantum-based real-random source.
Performance Limits of Sub-Shot-Noise-Limited Balanced Detectors
Authors: Gurses B. Volkan , Hajimiri Ali
Published: January 2023

We present an analysis of sub-shot-noise-limited coherent receivers for detecting quantum states of light. We introduce a noise model for coherent receivers and outline a guide to coherent receiver design for silicon photonics platforms.
Effects of conditioned losses in two-photon quantum walks
Authors: Pegoraro Federico , Held Philp , Barkhofen Sonja , Brecht Benjamin , Silberhorn Christine
Published: January 2023

We experimentally study the impact of conditioned losses on the evolution of an integrated two-photon quantum walk. Well-localized losses change the output distribution of the walk, but do not alter its asymptotic ballistic spreading.
Optical Absorption and Molecular Resonances in Multilayer-Dielectric Dark Matter Detectors
Authors: Kost Anson Liu , Van Tilburg Ken
Published: January 2023

We examine the effects of optical absorption on the sensitivity of multilayer-dielectric dark matter detectors called haloscopes by calculating their boost factors. We focus on absorption due to resonances with molecular transitions.
Stimulated Molecular Raman Scattering in KXe
Authors: Desai Kavita V. , Mironov Andrey E. , Eden J. Gary
Published: January 2023

Stimulated molecular Raman scattering has been observed in KXe, a transient molecule having a dissociative ground state. The quantum efficiency for this nonlinear process is >99%.
Oscillating bound states in non-Markovian photonic lattices
Authors: Lim Kian Hwee , Mok Wai-Keong , Kwek Leong Chuan
Published: January 2023

We provide novel conditions for the existence of oscillating bound states in the continuum (BIC) in a non-Markovian 1D photonic lattice by coupling it at multiple points with a “giant atom”.
Generating a tunable multimode optical source from the use of two single-mode sources
Authors: Tshibangu-Mbuebue Blaise , Lee Min Won , Rojas-Laguna Roberto , Zaldivar-Huerta Ignacio Enrique
Published: January 2023

A multimode optical spectrum is generated from the use of two Distributed-Feedback (DFB) lasers. The four-wave mixing phenomenon is used. Multimode spectrum is tuned by variating the wavelength of one of the DFBs.
Tilted FBG Sensor Data Extraction with Low-Resolution Spectral Interrogation Instrumentation
Authors: Nicolai Julian , Albert Jacques
Published: January 2023

TFBG sensor spectra contains a fine comb of narrowband cladding mode resonances. Spectral contour length method analysis is shown to provide precise refractive index and curvature measurements with low-resolution, low-cost optical spectrum analyzers.
GaAs photo diode for electrochemical process enhancement
Authors: Paudel Yamuna , Sfeir Matthew Y.
Published: January 2023

We have fabricated visible-absorbing gallium arsenide metasurfaces for use in photoelectrochemical cells and demonstrated resonant enhancements of the incident photon-to-current photocurrent efficiency by approximately four times compared to unpattern surfaces.
Atmospheric Oxygen Absorption Measurement around 770 nm Using Solar Photon Counting and Integrated Lithium Niobate Nanophotonics
Authors: Zhang Jiuyi , Sua Yong Meng , Ramanathan Jeevanandha , Hu Yongxiang , Huang Yu-Ping
Published: January 2023

We demonstrate a new method to measure the absorption spectrum of atmospheric Oxygen (O2) around 770 nm , using solar photon counting and a sweeping high quality factor (Q factor) on-chip integrated lithium niobate micro-ring resonator filter.
Simphony: A Simulator for Photonic Integrated Circuits With Location-Aware Monte Carlo Features
Authors: Chandrasekar Skandan , Camacho Ryan
Published: January 2023

Variations in waveguide dimensions arising from manufacturing process conditions can propagate to device performance. We incorporate manufacturing variability into Monte Carlo simulations in Simphony, a simulator for photonic circuits, using the Correlation Matrix method.
Passive Polarization Rotator in Thin-Film Lithium Niobate
Authors: Cortes-Herrera Luis , He Xiaotong , Cardenas Jaime , Agrawal Govind P.
Published: January 2023

When a thin-film L iNbO3 waveguide i s o riented o bliquely t o its crystallo-graphic Z axis, its TE and TM modes become coupled. We leverage this phenomenon to design the waveguide as a passive polarization rotator.
BTO-based O-band Sub-Volt CMOS Compatible Plasmonic Racetrack Modulator on Si3N4
Authors: Chatzitheocharis Dimitrios , Ketzaki Dimitra , Patsamanis Georgios , Vyrsokinos Konstantinos
Published: January 2023

We numerically demonstrate a tri-layer CMOS SiN-plasmonic BTO racetrack modulator for the O-band. The device exhibits 3 dB insertion loss, 66.43 GHz resonance 3dB-bandwidth and an extinction ratio higher than 28 dB for 0.5Vpp voltage.
Carrier Depletion Ring Modulator with a High Modulation Efficiency and a Large Extinction Ratio Developed in AIM Photonics Technology at Albany Nanotech Complex
Authors: Uddin M. Rakib , Wallner Jin , Dikshit Amit , Hossain M. Jobayer , Timalsina Yukta , Fahrenkopf Nicholas M. , Harame David L.
Published: January 2023

A unique structured carrier depletion ring modulator is fabricated. We achieved high modulation efficiency of 0.9nm with a large extinction ratio of about 20dB. The device has a free spectral range of about 13nm.
A Compact Ring Resonator Based Four Channel Multiplexer Developed in AIM Photonics Technology at Albany Nanotech Complex
Authors: Uddin M. Rakib , Wallner Jin , Dikshit Amit , Hossain M. Jobayer , Timalsina Yukta , Fahrenkopf Nicholas M. , Harame David L.
Published: January 2023

A very compact ring resonator based multiplexer is demonstrated. The fabricated four channel multiplexer shows the extinction ratio of about 25dB in each of the four consecutive resonances with a channel spacing of 2nm.
Compact photonic transient digitizer operating with one-twelfth of required electronic bandwidth
Authors: Singh Karamdeep , Sreeraj S J , Siva Subramaniyam C N , Srinivasan Balaji , Venkitesh Deepa
Published: January 2023

We demonstrate a single-shot photonic time stretch front end with stretch factor ~12.07. The time-stretch is carried out with the help of a Faraday rotator mirror (FRM) in the optical path to halve the required fiber length and to eliminate environmentally-induced polarization fluctuations.
Reduced rate equation models for accurate SAS of 87Rb D2 line
Authors: Bala Rajni , Ghosh Joyee , Venkataraman Vivek , Quantum Photonics Lab (MS-542)
Published: January 2023

We propose simplified reduced 5-level and 7-level rate equation models to calculate saturated absorption spectra of the Rb D2 line, and experimentally verify for transitions from upper and lower hyperfine ground state of 87Rb, respectively.
Generation of high-contrast, intense single-cycle pulses using a two-stage thin-solid-plate setup
Authors: Seo Meenkyo , Tsendsuren Khurelbaatar , Mitra Sambit , Kling Matthias , Kim Dong Eon
Published: January 2023

We demonstrate high-contrast, intense single-cycle pulses by enhancing the self-phase modulation for spectral broadening in two-stage of all-solid-state multiple-plate setups. The output pulses are compressed to 2.6 fs, close to the transform-limited of 2.55 fs.
Diagnostic Methodology for PAM4 Based Optical Interconnects in Hyper-Scale Data Centers
Authors: Rao Shreyas , Mohan Arun , Chakravarty Abhijit
Published: January 2023

A highly automated diagnostic methodology that reduces No Trouble Found (NTF) rates in hyper-scale data centers and provides faster quality response including failure analysis to suppliers for PAM4 based optical transceivers (200G/400G) is presented.
Bio-Layer Sensing using Directional Coupler based Modal Interferometer
Authors: Bawa Garima , Tripathi Saurabh Mani
Published: January 2023

A Directional Coupler has been theoretically analysed to find the existence of a dispersion turning-point and has been utilized for bio-layer sensing. A surface sensitivity ∼11.2nm/nm has been achieved for adsorbed bio-layer of RI ∼1.45.
Efficient plasmonic lasing from submicron-sized visible perovskite particle on gold substrate
Authors: Cho Sangyeon , Yang Yi , Soljačić Marin , Yun Seok Hyun
Published: January 2023

Utilizing surface plasmon polaritons (SPPs) is one of the most promising ways to miniaturize lasers into subwavelength-scale. Despite its potential, it has been challenging to make a plasmonic laser having a sub-micrometer scale in all three dimensions due to large cavity loss. Here, we demonstrate single-particle lasing around 540 nm with full-submicron, cesium lead bromide perovskite (CsPbBr3) crystals atop polymer-coated gold substrates at room temperature. With a large number (~100) of devices, we systematically study the lasing action of plasmonic test and photonic control groups. The achieved smallest plasmonic laser was 0.56 μm × 0.58 μm ×0.32 μm in size, ten-fold smaller than that of our smallest photonic laser. Key elements to efficient plasmonic lasing are identified as enhanced optical gain by the Purcell effect, long carrier diffusivity, a large spontaneous emission factor, and a high group index. Our results shed light on the three-dimensional miniaturization of plasmonic lasers.
Design Concepts of High-Performance Nano-Cavities
Authors: Hoang Thanh Xuan , Wang Fangwei , Chu Hong-Son , Chen Xudong , Nijhuis Christian A , García-Vidal Francisco J. , Eng Png Ching
Published: January 2023

Based on exact analytical solutions to the Maxwell equations, we present design concepts for high-performance photonic and plasmonic nano-cavities including gap modes, Fabry-Pérot modes, collective Mie resonances, Feshbach-type BIC modes, and photonic flat bands.
Free-carrier assisted optical nonlinearity in WSe2 thin films near the optical communication band
Authors: Surbhi Km. , Das Ritwick
Published: January 2023

We present an investigation that reveals the impact of free carriers on the nonlinear absorption in WSe2 thin-film. The sample exhibits strong two-photon absorption behaviour at 1520 nm excitation wavelength.
Study of the Correlation Behavior in the Null-Screen Test
Authors: Aguirre-Aguirre Daniel , Villalobos-Mendoza Brenda , Gonzalez-Utrera Dulce , Garcia Manuel Campos
Published: January 2023

We show the use of the correlation coefficient as a useful tool for the evaluation of optical surfaces with the null screen method. We made a theoretical study that proves the effectiveness of the method.
Non-Hermitian photonic eigenchannels
Authors: Makris K. G.
Published: January 2023

We introduce the concept of non-Hermitian eigenchannels based on the singular values of the associated propagator. Thus we determine the optimal wavefronts that lead to maximal amplification in dissipative lattices with sparse gain.
Infinite optical lattices with higher order exceptional points
Authors: Kaltsas Dimitrios , Komis Ioannis , Makris Konstantinos G.
Published: January 2023

We present a method for constructing infinite lattices that exhibit higher order exceptional points (HEPs), contrary to most studies that are devoted to finite systems. Their sensitivity in terms of pseudospectra is studied in detail.
Disorder-assisted Energy Transfer in the LH1-RC Complex with a Gaussian Laser Pulse
Authors: Wyke Ethan , Aiyejina Abuenameh , Andrews Roger
Published: January 2023

We investigate the effect of disorder in the energy separations in the donor ring of the LH1-RC photosynthetic complex on the transfer efficiency. It was found that disorder significantly increased the transfer efficiency.
Controlled Nanoscale Temperature Profile Based on Plasmonic Nanostructures
Authors: Chernykh E.A. , Kharintsev S.S.
Published: January 2023

We demonstrate a new approach to creating a tunable stable temperature gradient using titanium nitride thin-film structures at a fixed low-intensity laser radiation using Raman thermometry and numerical simulations methods.
Chemical Diagnostics of Nanosized Amorphous Carbon Films Via Electro-assisted Tip-Enhanced Raman Spectroscopy
Authors: Saparina S.V. , Kharintsev S.S.
Published: January 2023

Nanosized amorphous carbon films are used as protective coatings of optical fibers. In this article, we demonstrate the possibilities of coherent Tip-Enhanced Raman spectroscopy for resolving strongly overlapped bands in Raman spectra of the films.
Single Sideband Modulation Formats for Quantum Atom Interferometry with Rb Atoms
Authors: Tyagi Akshay , Pandit Himangi J , Dhawan Rajveer , Choudhary Amol
Published: January 2023

We investigate the effect of RF power on the generation of two frequencies with equal power using four different modulation formats for quantum atom interferometry with Rb atoms. The power-efficiency and stability of each modulation are discussed.
Effect of Pulse-shape Mismatch on the Security of Measurement-device-independent QKD Protocols
Authors: Ranu Shashank Kumar , Prabhakar Anil , Mandayam Prabha
Published: January 2023

Pulse-width mismatch, primarily caused by channel asymmetry, affects the visibility of Hong-Ou-Mandel (HOM) interference. We show that a channel asymmetry of 176.5 km reduces HOM visibility to 0.37, rendering a polarization-based MDI-QKD protocol completely insecure.
Ultra-Short Pulse Evolution in Highly Nonlinear Medium at Communication Regime
Authors: Mishra Manoj , Kumar Abhishek , Singh Brajraj , Jana Soumendu , Sharma Mohit
Published: January 2023

This paper presents an investigation of nonlinear phenomena arising due to low peak power ultrashort input pulse propagation in highly nonlinear medium. These ultrashort pulses with various parameters are studied in normal and anomalous dispersion.
Single-ring controlled As2Se3 Photonic Crystal Fiber for Dispersion compensation in Mid-Infrared Region
Authors: Chauhan Jyoti , Kalra Yogita , Sinha Ravindra Kumar
Published: January 2023

We report significant variation in chromatic dispersion from -165.085 to-1427.495 ps/nm-km at 4.9 µm wavelength by only varying hole-size of the first layer of Chalcogenide based Photonic crystal fiber in the Mid-Infrared range.
Analyzing the Influence of InGaAs Photodetectors in Comb-Based Frequency Transfer
Authors: Jin Ziyi , Xu Yunlong , Yu Dongrui , Luo Bin , Chen Ziyang , Wu Guohua , Guo Hong
Published: January 2023

We explore the influence on the noise generated by photodetectors in the time-frequency transfer system. Choosing the input optical power within an appropriate range and the utilization of high-harmonic frequency can reduce the noise floor.
Multiple Dispersion Compensation Channels in a Silicon Nitride Grating
Authors: Ong Kenny Y. K. , Chen George F. R. , Choi Juwon , Tan Dawn T. H.
Published: January 2023

A silicon nitride Bragg grating device is demonstrated to compensate for dispersion in a 20km single-mode fiber. Multiple normal dispersion magnitudes can be accessed in a single stopband with blue detuning at low insertion loss.
Graphene-based hybrid metal chiral metasurface for dynamic optical circular dichroism
Authors: Roy Shuvajit , Mondal Souvik , Debnath Kapil
Published: January 2023

A graphene-based hybrid metal chiral metasurface has been proposed. By tuning the chemical potential of graphene, circular dichroism of 75% has been achieved. Various doping levels allow a flexible tuning of circular dichroism efficiency.
Picosecond Pulse Generation on an Integrated Nonlinear Bragg Grating
Authors: Choi Ju Won , Sohn Byoung-Uk , Sahin Ezgi , Chen George F. R. , Ng Doris K. T. , Eggleton Benjamin J. , de Sterke C. Martijn , Tan Dawn T. H.
Published: January 2023

We experimentally demonstrate picosecond pulse generation from a low-power continuous-wave signal, generating 18ps pulses, by leveraging cross-phase modulation of pump pulses with a low peak power of 3.7 W in an ultra-silicon-rich nitride Bragg grating.
Multiple optical Tamm modes in one-dimensional chirped photonic crystal
Authors: Sharma Shailja , Mondal Abhishek , Das Ritwick
Published: January 2023

We proposed an approach to obtain multiple and tunable Tamm modes in an one-dimensional metallo-dielectric geometry whose design facilitates a monotonic variation in phase-mismatch between the forward and backward propagating modes along the longitudinal direction and consequently, allows adiabatic intermodal energy transfer.
Classification and Detection of White Blood Cells using Enhanced YOLOv5 Algorithm
Authors: Sarkar Joydip , Ahmadsaidulu Shaik , Banoth Earu
Published: January 2023

White Blood Cells (WBCs) detection and classification has a significant role in diagnosis application. The count, size, shape, texture, and nucleus of the cells provides the most vital component of the body's immune system. The current study proposes the enhanced novel model of YOLOv5 using deep learning algorithm for small object detection like WBCs for automatic diagnosis application.
Optical Local Search for Opto-Electronic Online Training of Classification Systems
Authors: Hu Zibu , Solyanik-Gorgone Maria , Sorger Volker J.
Published: January 2023

Here we introduce a novel optical local search algorithm and demonstrate its performance for opto-electronic accelerators. Exemplary, we perform an on-line machine learning optimization on an optical convolution layer thereby improving performance.
GPU-Accelerated Point-Based Holograms
Authors: Fricke Sascha , Caspary Reinhard , Castillo Susana , Magnor Marcus
Published: January 2023

We present a novel fast method to compute point-based Computer Generated Holograms with occlusion on the GPU, using modern hardware capabilities. Our method offers a promising new route towards real-time calculation of high-resolution holograms.
Depolarization of Vector Vortex Light Beams on Propagation in Free Space
Authors: Petrov Nikolai I.
Published: January 2023

Propagation-induced polarization changes in vector vortex light beams with different spatial intensity distributions on propagation in free space are analyzed. The close relationship of the degree of polarization with the quantum-mechanical purity parameter is emphasized.
Perfect indistinguishability from a set of dissipative quantum emitters
Authors: Guimbao J. , Sanchis L. , Weituschat L.M. , Llorens J.M. , Postigo P.A.
Published: January 2023

We find the optimal configuration for maximum photon indistinguishability (I) in the case of a five-emitter system coupled to a cavity using a machine-learning optimization procedure which provides the optimal position of each emitter. (This work was published in Nanomaterials MDPI [1]).
Determination of the refractive index of boric acid in various solvents at different temperatures
Authors: Sijilmassi Ouafa , Parejo Pilar García , Herrero Alberto Alvarez
Published: January 2023

The present research studies the variation of refractive indices with the temperature of three different boric acid concentrations, each dissolved in distinct solvents. The refractive index as a function of temperature (dn/dT) was also computed.
Multiple Object Tracking Based on Deep LSTM
Authors: Hao Zhicheng , Liu Chang , Zhang Haimiao , Qiu Jun
Published: January 2023

We propose a multi-object tracking method based on a memory processing module to improve tracking accuracy by saving and aggregating features between multiple frames and enhancing the utilization of inter-frame history information.
Tiny Target Detection Based on Multi-scale Attention
Authors: Gao Shurun , Liu Chang , Zhang Haimiao , Qiu Jun
Published: January 2023

We proposed a tiny targets detection method based on feature pyramid network by focusing on target regions of different scales and guiding the feature maps of adjacent layers to fuse the target features.
Cross Polarization in Bessel Light Beams
Authors: Khan Sameen Ahmed
Published: January 2023

A formalism of beam optics including polarization is presented based on an exact matrix-representation of Maxwell’s equations, using quantum methodologies. The paraxial limit of the formalism explains the cross-polarization in Bessel beams.
All-dielectric Ultraviolet Metasurfaces for Perfect Vortex Beam Generation
Authors: Shafqat Danial , Mahmood Nasir , Mehmood Muhammad Qasim , Massoud Yehia
Published: January 2023

We present all-dielectric metasurface-based perfect vortex (PV) beam generation for the ultraviolet regime. The phase profiles of focused helical beam and axicon are multiplexed to design the metasurfaces, ensuring the topological charge-independent beams generation.
Focusing Properties of Circularly Polarized Double-ring-shaped Beam with Annular Classical Axicon
Authors: Alkelly Abdu A. , Loqman Ibrahim G. H. , Al-Ahsab Hassan T.
Published: January 2023

Focusing properties of circularly polarized double-ring-shaped beam by annular classical axicon have been theoretically investigated. Different focal shapes are generated depending on the values of beam and optical system parameters.
Robust Silicone-Based Layered Tissue Phantoms for Autofluorescence Imaging Applications
Authors: Jayasankar Subitcha , Unni Sujatha Narayanan
Published: January 2023

Multilayer silicone phantoms mimicking a resected breast tissue with embedded tumor at varying depths are fabricated and used in autofluorescence imaging applications.
Improving Otsu’s Thresholding Method of Global Binarization Using Ring Theory for Ultrasounds of Congestive Heart Failure
Authors: Rahim Alisa
Published: January 2023

This paper examines the Otsu thresholding method and incorporates new elements including abstract algebraic structures to account for different image features meant to better isolate congestive heart failure indicators in ultrasound images.
Non-Uniform, Curved, Expanded and Inclined Diffraction Pattern of 1D-Grating Experiments---Rotating Grating Around Three Axes
Authors: Peng Hui
Published: January 2023

We show non-uniform, curved, expanded, and inclined diffraction pattern of a 1D-grating experiments attributed to the rotation of the grating around three axes sequentially. The orientation dependence of the diffraction patterns has been studied.
A New Method for Micro Fresnel Zone Plates Lens Design and Low-cost Fabrication by Laser Direct Writing
Authors: Chen Yiduo , Wang Zengbo , Wu Baidong , Yan Bing , Yue Liyang , Joya Yasir
Published: January 2023

We show high-precision manufacturing of thin-film micro-Fresnel zone plates lens can be achieved by a low-cost, widely available nanosecond laser marking system when discrepancies between theory and fabricated sample were compensated.
In-Line All-Fiber Optics Digital Sensor Based on Biconic Taper of Depressed Cladding Fiber
Authors: Celaschi Sergio , Grégoire Nicolas , Messaddeq Younès , Biazoli Claudecir R. , Malheiros-Silveira Gilliard N
Published: January 2023

We propose an in-line digital optical sensor. It is built in tapered single-mode fiber. Biconic tapers with high values of power transfer number were modeled, fabricated, and characterized at λ0 = 1.55 μm.
Fabrication of an optofluidic- electrochemical microfluidic device for heavy metal detection in water
Authors: Nadumane Sharmila Sajankila , Shreehasta  , Biswas Rajib , Mahato Krishna Kishor , Mazumder Nirmal
Published: January 2023

Heavy metal toxicity has increased, necessitating quick, cheap, easy, and precise approaches for real-time evaluation. Multiple heavy metals in water will be detected using the designed four-chambered multichannel device integrated with optofluidic and electrochemical techniques.
Zeeman EIT with transit-time decay in an inhomogeneously broadened -atomic system
Authors: Bharti  , Ghosh Joyee
Published: January 2023

We have theoretically investigated Zeeman Electromagnetically Induced Transparency (EIT) using the density-matrix formulation in thermal 87Rb vapor and obtained narrow EIT widths ~ 54 KHz with high peak transmissions >85% at room temperature (300 K).
3D Space-Time Wave Packets with Spatio-temporally Varying Polarization Structure
Authors: Yessenov Murat , Chen Zhaozhong , Lavery Martin P. J. , Abouraddy Ayman F.
Published: January 2023

We synthesize and characterize propagation-invariant space-time wave packets (STWPs) localized in all dimensions. The STWPs are endowed with spatiotemporally varying polarization structure that is unveiled over the STWP volume via time-resolved complex vector-field measurements.
Characterization of Hybrid Order Poincaré Sphere Beams
Authors: Bansal Sarvesh , Senthilkumaran P.
Published: January 2023

Hybrid order Poincaré sphere (HyOPS) is used to present vector vortex beams. Here we present an elegant, and simple method to detect the longitude and latitude coordinates of beams represented by points on the HyOPS.
Proposing a Non-Paraxial Mach-Zehnder Interferometer for Testing 3D Spatial Coherence
Authors: Bedoya-Ríos Pablo , Laverde Julián , Castañeda Román
Published: January 2023

Three-dimensional spatial coherence should be considered by interference with nonplanar arrays of emitters. A Mach-Zehnder interferometer with mobile masks is proposed for testing it and described by the confinement in spatially structured Lorentzian wells formalism.
Photon-drag effect and plasma oscillations in 1D semiconductors
Authors: Gulley Jeremy R. , Cooper Rachel , Winchester Ethan , Woolford Christopher , Limon Pablo , Huang Danhong
Published: January 2023

We couple the Maxwell equations to interband and intraband semiconductor Bloch equations for a laser-excited semiconductor nanowire. Results demonstrate 1D spatio-temporal plasma oscillations as well as a photon-drag current.
Titanium Dioxide Waveguide Based Directional Coupler for Switching and Splitting in Datacom and Telecom Application
Authors: Mukit M. , Mamun M. , Stabile R. , Calabretta N.
Published: January 2023

We present efficient titanium dioxide-TiO2 directional coupler integrated with single mode waveguide as an effective solution for switching and splitting at 1550nm wavelength. The 100/0 and 50/50 directional coupler show efficiency of 96.65% and 98.58%, respectively, which is so far reported the highest with TiO2 based directional coupler.
A Snowflake shaped Photonic Crystal Fiber for OAM mode propagation
Authors: Dyavangoudar Amogh A , Punia Sushma , Bourdine Anton V. , Ismail Yaseera , Singh Ghanshyam , Saharia Ankur , Tiwari Manish
Published: January 2023

This work presents a unique snowflake-shaped Photonic Crystal Fiber (PCF) for the propagation of OAM modes. The designed PCF theoretically demonstrated the propagation of 10 OAM modes at the specified wavelength of 1.55µm.
Tamm state in three-dimensional opal based photonic crystal
Authors: Mudi Rina , Shivakiran Bhaktha B.N , Debnath Kapil
Published: January 2023

We present the fabrication of 3D polystyrene opal based photonic crystal (PhC) coated with a silver layer by physical vapor deposition and characterization of the structure determining the optical Tamm state(OTS) in the photonic bandgap of PhC.
Automated Design of Optical Systems with Metalenses
Authors: Achuthan Nicholas , Bahl Mayank , Scarmozzino Rob , Heller Evan , Bos Jan , Xu Chenglin
Published: January 2023

Recent advances in metalens technology have created a demand for robust and efficient computer-aided design. Here we showcase the automated design of metalens systems by demonstrating both chiral holograms and a large FOV achromatic doublet.
Concave Shape-Dependent Narrow and Broad Band Spectral Filter Response in Sub-Wavelength Silicon Waveguide Gratings
Authors: Singhal Sridhar , Sharma Shubhanshi , Kumari Rashmi , Kar Sauradeep , Rehan Mohd , Varshney Shailendra K.
Published: January 2023

A novel concave shaped resonant waveguide grating has been proposed whereby simple tweaking of the etched trench dimensions can lead to high quality resonances, which can be useful in narrow band filters.
Individual plasmonic nanoresonators for lasing and spasing
Authors: Vass D. , Szenes A. , Bánhelyi B. , Csete M.
Published: January 2023

Plasmonic nanoresonators of different core-shell composition were optimized to maximize the stimulated emission in the near-field (NF-c-type), and to enter into the spasing operation region (NF-c*-type) by increasing the dye concentration in the gain medium.