-
3-D Range Imaging Using Stripe-Like Illumination and SPAD-Based Pulsed TOF Techniques IEEE Photon. J. (IF 2.4) Pub Date : 2024-03-14 Lauri Hallman, Sahba Jahromi, Jussi-Pekka Jansson, Pekka Keränen, Juha Kostamovaara
-
Used high collimation UV-LEDs with a miniaturized optomechanical device for the detection of direct bilirubin IEEE Photon. J. (IF 2.4) Pub Date : 2024-03-12 Zhi Ting Ye, Shen Fu Tseng, Jun Yi Wu, Hsin Ching Kuo
-
1.12Tbps-16QAM Uncompensated LongHaul Transmission Employing a new SelfOscillating Optical Frequency Comb Generator both at transmitter and receiver IEEE Photon. J. (IF 2.4) Pub Date : 2024-03-12 Rahat Ullah, Sibghat Ullah, Shuaidong Chen, Ahmad Almadhor, Abdullah A. Al-Atawi, Ren Jianxin, Maqbool Khan, Giovanni Pau
-
A MIMO Detector With Deep-Neural-Network for Faster-Than-Nyquist Optical Wireless Communications IEEE Photon. J. (IF 2.4) Pub Date : 2024-03-12 Minghua Cao, Ruifang Yao, Qinxue Sun, Yue Zhang, Qing Yang, Huiqin Wang
-
Generation of Power-Exponent-Phase Vortex Beam Arrays Based on All-Dielectric Metasurfaces IEEE Photon. J. (IF 2.4) Pub Date : 2024-03-12 Jiale Guo, Chuan Shen, Jinkun Hu, Yong Zhou, Cheng Zhang, Sui Wei
-
Silicon Photonics for Inter/Intra-chip Wireless Communication using RF On-Chip Antennas IEEE Photon. J. (IF 2.4) Pub Date : 2024-03-12 Ajaypal Singh Dhillon, Frédérick Melanson, Odile Liboiron-Ladouceur
-
Resolution-enhanced ptychographic modulation imaging via divergent illumination IEEE Photon. J. (IF 2.4) Pub Date : 2024-03-08 Jun Lan, Cheng Xu, Hui Pang, Song Hu, Yong Yang
-
Analysis of Velocimetry Processing Method Based on Doppler Asymmetric Spatial Heterodyne Spectrometer IEEE Photon. J. (IF 2.4) Pub Date : 2024-03-08 Xiang Peng, Enhai Liu, Shulin Tian, Rujin Zhao
-
Simulation of the Mode Dynamics in Broad-ridge Laser Diodes IEEE Photon. J. (IF 2.4) Pub Date : 2024-03-07 Eduard Kuhn
-
Temperature Sensing Diode in InP-Based Photonic Integration Technology IEEE Photon. J. (IF 2.4) Pub Date : 2024-03-06 Wenjing Tian, Bart Bas, Dylan Harmsen, Kevin Williams, Xaveer Leijtens
-
Impact of Spatial Hole Burning and Linewidth Enhancement Factor on Distributed-Feedback Quantum Cascade Lasers: A Comprehensive Design Analysis IEEE Photon. J. (IF 2.4) Pub Date : 2024-03-06 Sara Zaminga, Lorenzo Columbo, Carlo Silvestri, Mariangela Gioannini, Frédéric Grillot
-
Design of a Broadband Integrated Mode Converter Based on Non-Uniform Binary Long-Period Grating by Direct Multiparameter Optimization IEEE Photon. J. (IF 2.4) Pub Date : 2024-03-06 Edyta Środa, Jacek Olszewski, Waclaw Urbanczyk
-
Polarization-dependent distortion of the vortex light field generated using a vortex retarder IEEE Photon. J. (IF 2.4) Pub Date : 2024-03-06 Jinyu Pan, Zhiyuan Huang, Tiandao Chen, Donghan Liu, Yue Yu, Xinshuo Chang, Meng Pang, Yuxin Leng
-
Comparative Study of ASE-ASE and ASE-Laser Based Quantum Random Number Generators IEEE Photon. J. (IF 2.4) Pub Date : 2024-03-05 Shreyam Maity, Asish Prosad, Harinee Natarajan, V. Balaswamy, Varun Raghunathan
-
Transverse Coupled Cavity VCSELs: Bridging Ultrabroadband Dynamics To Optical Supermodes IEEE Photon. J. (IF 2.4) Pub Date : 2024-03-05 Martino D'Alessandro, Valerio Torrelli, Francesco Bertazzi, Michele Goano, Nikolay N. Ledentsov, Markus Lindemann, Mariangela Gioannini, Pierluigi Debernardi, Alberto Tibaldi
-
Image Transmission Utilizing Amplitude Modulation in Rydberg Atomic Antenna IEEE Photon. J. (IF 2.4) Pub Date : 2024-03-04 Peng Zhang, Shaoxin Yuan, Mingyong Jing, Jinpeng Yuan, Hao Zhang, Linjie Zhang
Microwave electric field precision measurement based on Rydberg atomic quantum coherence effect has rapidly advanced in recent years, capitalizing on its high sensitivity, broad bandwidth, and traceability. The utilization of distinct Rydberg quantum states facilitates achieving an ultra-wideband measurement response across various microwave frequency bands, offering extensive applications in wireless
-
Enhancing the Scattering Induced by Gold Periodic Arrays Over Optical Waveguides Through Indium Tin Oxide Buffer Layers IEEE Photon. J. (IF 2.4) Pub Date : 2024-03-04 Rita Asquini, Alessio Buzzin, Nicolas Hanine, Alessia Mannetta, Badrul Alam, Vincenzo Ferrara
-
Combustion Field Prediction and Diagnosis via Spatiotemporal Discrete U-ConvLSTM Model IEEE Photon. J. (IF 2.4) Pub Date : 2024-03-01 Xiaodong Huang, Xiaojian Hao, Baowu Pan, Shaogang Chen, Shenxiang Feng, Pan Pei
Considering the importance of combustion diagnosis in industrial manufacturing and many fields, efficient, quick, and real-time multidimensional reconstruction is necessary and indispensable. Hence, focusing on the combustion field dynamic and multi-dimensional reconstruction, a modified U-ConvLSTM model was proposed to combine with the TDLAS method to resolve the real-time reconstruction and short
-
Impact and compensation of electrical-to-optical frequency response on carrierless phase retrieval receivers IEEE Photon. J. (IF 2.4) Pub Date : 2024-02-29 Qi Gao, Hanzi Huang, Zhengxuan Li, Ziyue Liu, Yuanzhe Qu, Yingxiong Song
-
Research on Distributed Fiber Optical Strain Testing Technology Based on the Adam Algorithm IEEE Photon. J. (IF 2.4) Pub Date : 2024-02-29 Jie Duan, Yuting Liu, Lijuan Li, Jiyu Li, Yanan Zhao, Jianli Zheng
Distributed Optical Fiber Sensing Technology, with advantages such as long detection distance, resistance to electromagnetic interference, and easy maintenance, is widely applied in various fields including security monitoring, electrical safety, and aerospace. However, the current Distributed Optical Fiber Sensing Technology faces challenges such as short localization distance, limited range for stress
-
Research on optical path trajectory equation based on three optical wedges IEEE Photon. J. (IF 2.4) Pub Date : 2024-02-29 Jian Jiang, Suben Lin, Junmin Zhang, Xiaogang Li, Kunpeng Zhang, Jian Guo, Fengping Li
-
Improving Performance of Integrated Ground-HAPS FSO Communication Links With MIMO Application IEEE Photon. J. (IF 2.4) Pub Date : 2024-02-29 Emna Zedini, Yalçın Ata, Mohamed-Slim Alouini
In this paper, we investigate the performance of multiple-input multiple-output (MIMO) free-space optical (FSO) communication systems, encompassing both slant path (downlink and uplink) and horizontal links. The FSO links span ground-to-high altitude platform system (HAPS), HAPS-to-ground, and HAPS-to-HAPS configurations. To model the atmospheric turbulence-induced fading, pointing error impairments
-
Near-infrared spectroscopy combined with support vector machine model to realize quality control of ginkgolide production IEEE Photon. J. (IF 2.4) Pub Date : 2024-02-29 Lei Liu, Jun Wang, Haiyi Bian, Ahmed N. Abdalla
-
Quasi-Continuous Wave Pumped Slab Laser Based on Nd:CTGS Crystal IEEE Photon. J. (IF 2.4) Pub Date : 2024-02-29 Shutong Yang, Chuanrui Zhao, Pingzhang Yu, Zhengping Wang
A slab laser based on Nd:CTGS crystal was reported for the first time. With a quasi-continuous wave semiconductor laser as the pump source, the maximum average output power reached 7.01 W, with a wavelength of 1064.5 nm, a single-pulse energy of 35 mJ, and a slope efficiency of 31%. Using a Cr 4+ :YAG crystal as the saturable absorber, the maximum average output power was 2.52 W, corresponding to a
-
Comparison of Photonic to Plasmonic Mode Converters for Plasmonic Multiple-Input Devices IEEE Photon. J. (IF 2.4) Pub Date : 2024-02-28 Samantha Lubaba Noor, Francky Catthoor, Dennis Lin, Pol Van Dorpe, Azad Naeemi
Implementing a compact optical integrated circuit by utilizing subwavelength plasmonic devices requires the design of compact and efficient photonic to plasmonic mode converters. Especially for plasmonic multiple-input devices such as logic gates that require multiple converters, the footprint can be largely penalized by the photonic waveguides, which should be considered in the design. In this work
-
PSO-Aided Inverse Design of Silicon Modulator IEEE Photon. J. (IF 2.4) Pub Date : 2024-02-27 Zijian Zhu, Yingxuan Zhao, Zhen Sheng, Fuwan Gan
Optimizing doping profiles has always been a key approach to enhance the performance of silicon modulators. Nevertheless, the pursuit of innovative profiles has encountered barriers in recent times. To tackle this issue, the idea of inverse design, widely adopted in passive photonic devices, can be employed in silicon active devices. As a result, we incorporate the inverse design method with the particle
-
Multi-Domain Modeling of Free-Running Harmonic Frequency Comb Formation in Terahertz Quantum Cascade Lasers IEEE Photon. J. (IF 2.4) Pub Date : 2024-02-27 Johannes Popp, Lukas Seitner, Felix Naunheimer, Georg Janowski, Michael Haider, Christian Jirauschek
-
Multi-impairment Compensation for CO-OFDM System Based on Deep Learning and LDPC Code IEEE Photon. J. (IF 2.4) Pub Date : 2024-02-27 Cong Hu, Yuanxiang Chen, Ying Han, Jianguo Yu
-
Stability Analysis of Localized States and Deterministic Single Soliton Generation in a Kerr Microresonator Under Thermo-Optic Nonlinear Effects IEEE Photon. J. (IF 2.4) Pub Date : 2024-02-27 Qinglin Fang, Haojie Xia, Mingjie Jiao, Feifan Xu, Xueying Jin
Thermal effects are ubiquitous in high-quality resonators and microcomb-based high precision measurements. We present a stability analysis of the thermodynamics in a driven Kerr microresonator theoretically and numerically, using the thermal Lugiato-Lefever model. We analyze the spatial bifurcation structure and existence range of stationary states depending on the thermal parameters. Our study shows
-
A Novel Hermite Interpolation-based MPPT Technique for Photovoltaic Systems under Partial Shading Conditions IEEE Photon. J. (IF 2.4) Pub Date : 2024-02-26 Chuanlai Yuan, Juntao Xia, Fengyuan Huang, Peng Zhao, Lingshuang Kong
-
Scalable Photonic-Assisted Multipath Self-Interference Cancellation Based on Optical Frequency Comb IEEE Photon. J. (IF 2.4) Pub Date : 2024-02-26 Zhe Liu, Dayong Wang, Jing Zhang, Jinchuan Yao, Yunxin Wang, Yuanfen Zhou, Lu Rong
In order to increase the scalability and reduce the complexity of photonic multipath SIC systems, a photonic multipath self-interference cancellation (SIC) method based on optical frequency comb (OFC) is proposed. The OFC is generated by continuously frequency-shifting the seed laser in the re-circulating frequency shifter (RFS) loop. The reference signal is modulated to the multiple combs of the OFC
-
Spectral Design Method to Simulate Tunable Spectra of Various Light Sources Based on Multi-Channel LEDs IEEE Photon. J. (IF 2.4) Pub Date : 2024-02-22 Zijian Tao, Xiaojie Zhao, Shanshan Li, Qi Dai
Using a single light source to simulate tunable spectra of various light sources, such as International Commission on Illumination (CIE) standard illuminants, has attracted great interest. This can be realized through the spectral mixing of multi-channel LEDs. However, there is currently a lack of a general and comprehensive spectral-mixing method that can effectively achieve the target spectra with
-
Analysis of Threshold Characteristics of Short-wavelength Semiconductor Lasers IEEE Photon. J. (IF 2.4) Pub Date : 2024-02-22 Bangguo Wang, Shaoyang Tan, Li Zhou, Wuling Liu, Lihong Zhu, Guoliang Deng, Jun Wang
-
Polarization Multiplexing Dammann Grating Based on All-Dielectric Metasurface IEEE Photon. J. (IF 2.4) Pub Date : 2024-02-20 Chenyang Wu, Xuanlun Huang, Yipeng Ji, Jiaxing Wang, Connie J. Chang-Hasnain
Dammann gratings (DG) have become a powerful tool for generating multi-level spectral points in speckle arrays through binary phase variation. Conventional DGs are limited to regular dot arrays, such as squares and circular rings. Emergence of metasurface-based coding technology opens new ways for ultra-thin, compact and miniaturized DGs. In this study, we present a novel polarization multiplexing
-
Ultra-Narrowband High-Transmissivity Guided-Mode Resonance Filter Based on Dual Dielectric Film Structure and High Refractive Index Waveguide Layer IEEE Photon. J. (IF 2.4) Pub Date : 2024-02-20 Min Gao, Yu Zhang, Xinmiao Lu, Xiaoli Gong, Lei Zheng
In this study, we propose a novel approach to achieve an ultra-narrow bandwidth and high transmittance filter in the visible range. By employing TiO 2 as the waveguide layer material, the coupling energy in the waveguide layer is enhanced, leading to a reduction in the full width half maximum (FWHM). Additionally, a double-layer dielectric film structure composed of SiO 2 and Al 2 O 3 is employed on
-
Nonuniformity Correction Method of Infrared Detector Based on Statistical Properties IEEE Photon. J. (IF 2.4) Pub Date : 2024-02-20 Li Dandan, Ding Xiang, Chai Mengyang, Ma Chao, Sun Dexin
The images captured by a plane-array type infrared detector, formed by integrating a large-scale probe array and readout circuits via interconnection, is distorted by two types of superimposed nonuniform noises caused by the probe and readout circuitry. These nonuniform noises arise from the detector's constituent materials, fabrication processes, and other defects. In addition, the output response
-
Optical Frequency Combs in External Cavity SiN Hybrid Lasers IEEE Photon. J. (IF 2.4) Pub Date : 2024-02-20 Cristina Rimoldi, Lorenzo L. Columbo, Mariangela Gioannini
We analyze the emergence of optical frequency combs in a III-V SiN hybrid laser. Our model accounts for the narrow band effective mirror reflectivity and allows to simulate laser dynamics as a function of the bias current and the detuning of the lasing frequency with respect to the effective reflectivity peak. The physical mechanisms triggering multimode dynamics are analyzed in detail, with a focus
-
Low-Loss Waveguide Crossing for Complicated On-Chip Microwave Photonic Processor IEEE Photon. J. (IF 2.4) Pub Date : 2024-02-19 Ziyang Lu, Jiachen Li, Hongwei Chen, Sigang Yang, Minghua Chen
To realize large device density and high complexity in future on-chip microwave photonic system, a waveguide crossing with low loss, crosstalk and reflection is designed on the silicon nitride waveguide platform, which is compatible for on-chip microwave photonic processor. Furthermore, a multi-channel microwave photonic signal processing chip is fabricated based on the proposed waveguide crossings
-
A Bidirectional Multi-Format/Rate-Adjustable Integrated Laser Communication System for Satellite Communication IEEE Photon. J. (IF 2.4) Pub Date : 2024-02-16 Xiaoliang Li, Feng Fan, Hongtao Yu, Yizhou Wang, Xiaoxiao Dai, Qi Yang, Rongke Liu
Satellite optical communication networks have become a promising core network structure, surpassing 5G and 6G, and are expected to realize seamless connections between terrestrial and non-terrestrial networks. Constructing an optical satellite network that can achieve various link schemes and enable bidirectional communication with multiple optical satellites at a low cost (including low power consumption
-
Length of Polarization-Correlation Based on Speckle Pattern for Optical Coherent Detection IEEE Photon. J. (IF 2.4) Pub Date : 2024-02-15 Longkun Zhang, Jianfeng Sun, Qian Xu, Weibiao Chen
A length of polarization-correlation (LPC) based on speckle pattern of the non-uniform spatial polarization distribution is proposed and measured by using the classical measurement method of the Stokes polarization parameters for optical coherent detection. The LPC, which depends on the material of the scattering medium, is emphasized on the speckle scale. A gradually expanding window centered at the
-
Investigation of χ(2)-Translated Optical Frequency Combs Tunability in Gallium Phosphide-on- Insulator Resonators IEEE Photon. J. (IF 2.4) Pub Date : 2024-02-13 Pengzhuo Wu, Weiren Cheng, Ning Ding, Xingyu Tang, Zhaoting Geng, Zhenyu Liu, Mingjian You, Xiaolun Yu, Yi Li, Qiancheng Zhao
We describe a synergistic optimization approach that enables highly efficient frequency translation of a Kerr optical frequency comb (OFC) from 1550 nm to 775 nm in a gallium phosphide-on-insulator (GaP-OI) microresonator. Key distinctions from previous GaP-OI works which focused on individual optical nonlinearity are that this work not only emphasizes the interaction between the second- and third-order
-
Experimental Verification of a Multiuser Detection Technique for Asynchronous UOWC Systems IEEE Photon. J. (IF 2.4) Pub Date : 2024-02-13 Weijie Liu, Xiaorui Chen, Nuo Huang, Zhengyuan Xu
In this paper, a multiuser detection technique is proposed and experimentally verified in underwater optical wireless communication (UOWC) under dynamic channel conditions, which incorporates subspace-based delay estimation and decorrelating multiuser detection methods for an asynchronous access system. The subspace-based delay estimation method necessitates only prior knowledge of user spreading codes
-
Multi-Channel Simultaneous Measurement of Cu(II) and Zn(II) Metal Ions Using Multimode Interference Based Sensors Encompassed in Fiber Ring Laser IEEE Photon. J. (IF 2.4) Pub Date : 2024-02-13 Anuradha N, Sivabalan S
In this research, a novel fiber-optic multimode interference based multi-channel transmissive sensors integrated into a fiber laser loop (FRL) for the detection of $\text{Cu}^{2+}$ and $\text{Zn}^{2+}$ metal ions in aqueous solution is proposed and experimentally corroborated. The multi-channel configuration includes single mode-claddingless- graded index multimode- single mode (SCGS) fiber structure
-
Simultaneous Measurement of Humidity and Temperature Using a Hybrid Plasmonic Waveguide Bragg Grating IEEE Photon. J. (IF 2.4) Pub Date : 2024-02-13 Zeng Wang, Guangxi Hu, Haimei Luo, Jiajia Zhao, Daixing Duan, Wen Yuan
A hybrid plasmonic waveguide Bragg grating (HPWBG) consisting of a polyvinyl alcohol (PVA) microfiber coupled with metal strips oriented at right angles is reported for simultaneous measurement of humidity and temperature. Due to the convenient adherence of PVA microfiber to metal gratings and its easy connectivity to silica fiber tapers, the hybrid plasmonic waveguide sensor exhibits high flexibility
-
High-Sensitivity EFPI-Based Acoustic Sensor Using in-Fiber Collimator and Adjustable 45° Mirror IEEE Photon. J. (IF 2.4) Pub Date : 2024-02-07 Qi Zhang, Jiefeng Luo, Xiaobei Zhang, Yan Tang, Yizheng Chen, Yong Yang, Yang Wang, Yi Huang, Tingyun Wang
In this paper, a high-sensitivity cross-axial extrinsic Fabry-Perot interferometric (EFPI) acoustic sensor is proposed and experimentally demonstrated. The cross-axial EFPI is constructed by optical fiber and cantilever's inner surface, assisted with an adjustable 45° mirror. Herein, the 45° mirror is utilized to achieve beam total reflection and flexibly adjust the parallelism of the two reflectors
-
All Polarization Maintaining Brillouin Erbium-Doped Fiber Laser With Sub-kHz Linewidth Using Saturated Absorber and Self-Injection Feedback IEEE Photon. J. (IF 2.4) Pub Date : 2024-02-06 Junsen Yang, Zhengkang Wang, Jianming Shang, Shiyou Xiao, Zhixue Li, Bin Luo, Tianwei Jiang, Song Yu
A narrow-linewidth all-polarization-maintaining (PM) Brillouin erbium-doped fiber laser (BEFL) is proposed and demonstrated experimentally, which employs erbium-doped fiber (EDF) acting as both the linear gain and the Brillouin gain medium. In order to realize a single longitudinal mode (SLM) operation and a narrow linewidth fiber laser output, the saturable absorber (SA) and the optical self-injection
-
Square-Wave Spatial Optical Orthogonal Frequency-Division Multiplexing IEEE Photon. J. (IF 2.4) Pub Date : 2024-02-06 Mohammed S. A. Mossaad, Kaichen Su, Warren Pawlikowski, Zhenyu Charlus Zhang, Steve Hranilovic, Lutz Lampe
Visible light communication (VLC) systems leverage illumination devices, such as light-emitting diodes (LEDs), to serve a dual role as indoor high-speed communication downlinks. Though high data rates are possible using orthogonal frequency-division (OFDM) in VLC systems, the impact on the complexity and luminous efficacy of the luminaire remain among the key challenges. In this paper, square-wave
-
Overcoming Hardware Imperfections in Optical Neural Networks Through a Machine Learning-Driven Self-Correction Mechanism IEEE Photon. J. (IF 2.4) Pub Date : 2024-02-05 Minjoo Kim, Beomju Kim, Yelim Kim, Lia Saptini Handriani, Suhee Jang, Dae Yeop Jeong, Sung Ik Yang, Won Il Park
We developed an optical neural network (ONN) for efficient processing and recognition of 2-dimensional (2D) images, employing a conventional liquid crystal display panel as optical neurons and synapses. This configuration allowed for optical signal outputs proportional to matrix-vector multiplication for 2D image inputs. However, our experimental results revealed a 26.6% decrease in the optical classification
-
A Resolution and Localization Algorithm for Closely-Spaced Objects based on Improved YOLOv5 Joint Fuzzy C-Means Clustering IEEE Photon. J. (IF 2.4) Pub Date : 2024-02-02 Yao Li, Xin Chen, Peng Rao, Shenghao Zhang, Guangsen Liu
-
All-Optical Format Conversion for Rectangular 8QAM Signals Based on Phase-Sensitive Amplification and Nonlinear Mach-Zehnder Interferometer IEEE Photon. J. (IF 2.4) Pub Date : 2024-02-02 Qiankun Li, Xiongwei Yang, Huashun Wen, Yameng Li, Qi Xu, Jiali Yang, Pengfei Xu, Huajun Yang
-
Polarization-Insensitive Silicon Nitride Photonic Receiver Based on Thin Waveguides for Optical Interconnects at 1$\mu$m IEEE Photon. J. (IF 2.4) Pub Date : 2024-02-02 Alexander Caut, Magnus Karlsson
This article demonstrates with simulations two polarization independent wavelength division multiplexing receiver platforms based on thin silicon nitride waveguides for optical interconnects at 1 $\mu$ m. The chosen waveguide base geometry (width = 900 nm × height = 160 nm) is a good tradeoff between mode confinement and propagation loss. We first propose a design using a polarization splitter with
-
Designing a Sub-20V Breakdown Voltage SPAD With Standard CMOS Technology and n/p-well Structure IEEE Photon. J. (IF 2.4) Pub Date : 2024-02-02 Jau Yang Wu, Chun-Hsien Liu
We have proposed a structural design for a single photon avalanche diode with a low breakdown voltage. This diode is fabricated using Taiwan Semiconductor Manufacturing Company (TSMC) 0.18 μm HV CMOS technology, and it can maintain a high operating excess voltage in an n-on-p design without requiring any additional customized well layers. The n-on-p type device is particularly advantageous for a 3D-stacked
-
High-Power Emission via Large-Area VCSELs With Single High-Order Mode Operation IEEE Photon. J. (IF 2.4) Pub Date : 2024-02-01 Valerio Torrelli, Alberto Gullino, Alberto Tibaldi, Francesco Bertazzi, Michele Goano, Pierluigi Debernardi
In this work we investigate patterned large-active area AlGaAs vertical-cavity surface-emitting lasers (VCSELs) targeting high-power single-transverse-mode emission. As a first step, our in-house 3D electromagnetic vectorial mode solver VELMS is validated against preliminary experimental data. Then, VELMS is applied to implement single-mode operation on VCSELs featuring large-area rectangular oxide
-
Ultraviolet Network Coverage Based on Non-Line-of-Sight Channel IEEE Photon. J. (IF 2.4) Pub Date : 2024-02-01 Cheng Li, Zhiyong Xu, Jingyuan Wang, Jiyong Zhao, Jianhua Li
Ultraviolet (UV) networks, owing to their advantages of low eavesdropping rates, low background noise, strong anti-interference abilities, and non–line-of-sight (NLOS) communication, have high prospects for application in the complex electromagnetic environment. In this study, UV network coverage was systematically evaluated based on the NLOS channel. Combined with a designed node model and a specific
-
AlGaAs Tunnel Junction (TJ)-VCSELs: A NEGF–Drift-Diffusion Approach IEEE Photon. J. (IF 2.4) Pub Date : 2024-01-31 Alberto Gullino, Valerio Torrelli, Martino D'Alessandro, Alberto Tibaldi, Francesco Bertazzi, Michele Goano, Pierluigi Debernardi
This work reports a multiscale physics-based approach aimed at investigating the benefits of introducing a single tunnel junction (TJ) within conventional AlGaAs Vertical-Cavity Surface-Emitting Lasers (VCSELs). Our comprehensive VCSEL solver VENUS is augmented with a non-equilibrium Green's function (NEGF) approach to extract the band-to-band tunneling rate across the TJ. To showcase the NEGF-VENUS
-
A Balanced Dual-Intracavity Dual-Mode Interlocking Method for Fiber Laser Self-Reference Wavelength Stabilization IEEE Photon. J. (IF 2.4) Pub Date : 2024-01-30 Liuxin Zhang, Kang Ying, Guochao Wang, Haoyang Pi, Zhaoyong Wang, Yanguang Sun, Fang Wei, Youzhen Gui, Qing Ye, Haiwen Cai
The laser frequency stabilization technology is very important in the development of laser applications, and the improvement of this technology has tend to further expectations for portability and low cost, in addition to the realization of strict frequency control. In this context, we construct a dual-cavity laser frequency stabilization system based on an intracavity dual-mode self-reference mechanism
-
Optimization for Si Nano-Pillar-Based Broadband Achromatic Metalens IEEE Photon. J. (IF 2.4) Pub Date : 2024-01-29 Zhaohui Li, Yihao Lv
An innovative optimization algorithm, named the hybrid particle swarm and genetic algorithm (PSO_GA), is proposed for designing broadband achromatic metalenses. A database is first constructed by scanning the parameters of the unit cell of the metalenses using FDTD software, mapping each unit cell to its phase modulation capability. The PSO_GA is then utilized to identify the optimal phase matrix that
-
Improved Performance of AlGaInP Red Micro Light-Emitting Diodes by Sidewall Treatments of Citric Acid IEEE Photon. J. (IF 2.4) Pub Date : 2024-01-29 Zhen-Jin Wang, Xin-Liang Ye, Chih-Chiang Yang, Wei-Chen Tu, Yan-Kuin Su
The efficiency of AlGaInP micro light-emitting diodes (micro-LEDs) was far weaker than that of GaN-based micro-LEDs in structure and performance. Consequently, there was an urgent demand to enhance their efficiency. In this study, a citric acid treatment strategy is proposed to improve the efficiency of red micro-LEDs, and the etching uniformity of different concentrations was first confirmed. We optimized
-
Advancements in Optical Communication Research: A Review of India's Progress IEEE Photon. J. (IF 2.4) Pub Date : 2024-01-26 Mandeep Singh, Debanuj Chatterjee, Suchita, Sugeet Sunder, Karamdeep Singh, Mrudula Krishna, Sameer Ahmad Mir, Deepa Venkitesh
With the increasing use of internet and mobile phones, the capacity of the backbone optical communication link has been continually growing across the world and especially in India. The total optical fiber cable deployed for the BharatNet initiative of Government of India is expected to increase from 3.4 million km to 5 million km in 2024–25 just for providing last-mile connectivity. Considering this
-
Entanglement Based Detection, Networking, Sensing, and Radars IEEE Photon. J. (IF 2.4) Pub Date : 2024-01-25 Ivan B. Djordjevic, Vijay Nafria
Entanglement based (EB) communication, networking, and sensing represent excellent alternatives to corresponding classical counterparts in particular in either low-brightness or high-attenuation regime and when the signal photons are buried in noise. In EB applications idler photons are stored in memory while the signal photons, carrying information, are transmitted over lossy, noisy, and for comm