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Modeling the impact of fabrication variabilities on the performance of silicon avalanche photodetectors IEEE Photon. J. (IF 2.4) Pub Date : 2024-04-24 David Liu, Luca F. Errico, Matteo G. C. Alasio, Mike Zhu, Enrico Bellotti
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Wavelength-Tunable First-Order Narrowband Fiber Comb Filter Incorporating All-Quarter-Wave Polarization Transformation IEEE Photon. J. (IF 2.4) Pub Date : 2024-04-24 Jaehoon Jung, Yong Wook Lee
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Using an LED light source coupled with spectral image analysis for non-invasive glucose detection IEEE Photon. J. (IF 2.4) Pub Date : 2024-04-24 Zhi Ting Ye, Shen Fu Tseng, Shang Xuan Tsou, Wen Tsung Ho
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Optimization of Fiber Ring Resonator transmission spectrum based on multi-beam interference theory and transfer matrix theory IEEE Photon. J. (IF 2.4) Pub Date : 2024-04-23 Wenya Liu, Jiubin Tan, Jiwen Cui
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Adaptive Modulation and Coding with LDPC Codes and Retransmission for Ultraviolet Communication IEEE Photon. J. (IF 2.4) Pub Date : 2024-04-23 Fei Long, Jingyin Tang, Lingfeng Li, Jingyang Chen, Chen Gong, Zhengyuan Xu
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Green Emission in Thermally Stable Er3+ Doped Lead-Free Perovskite Phosphor for Solid-State Lighting and Optical Thermometry Applications IEEE Photon. J. (IF 2.4) Pub Date : 2024-04-23 Ishant Kumar, Avinash Kumar, Sandeep Kumar, Vikas Sangwan, Arvind K. Gathania
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Controlled transport of particles using graphene patterns IEEE Photon. J. (IF 2.4) Pub Date : 2024-04-23 Zhihao Li, Jinfeng Li, Zelin Guo, Jian Xu, Min Jiang
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Real-Time Terahertz Modulation Using Gold-MoS2 Metasurface with Electromagnetically Induced Transparency-Like Resonance IEEE Photon. J. (IF 2.4) Pub Date : 2024-04-22 Jianhong Zhang, Zesen Liu, Jiandong Ye, Weizong Xu, Feng Zhou, Dong Zhou, Rong Zhang, Fangfang Ren, Hai Lu
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A New Bearing Fault Diagnosis Method Based on Deep Transfer Network and Supervised Joint Matching IEEE Photon. J. (IF 2.4) Pub Date : 2024-04-22 Chengyao Liu, Fei Dong, Kunpeng Ge, Yuanyuan Tian
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Image Stabilization of A Model-following Dual-Stage System with Charge-Coupled Device Measurement IEEE Photon. J. (IF 2.4) Pub Date : 2024-04-19 Yun Wu, Liangzong Zhang, Tao Tang
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Queuing Delay Analysis for Wavelength Routing Optical Satellite Networks Over Dual-Layer Constellation IEEE Photon. J. (IF 2.4) Pub Date : 2024-04-19 Jingkai Yang, Qiwen Ran, Jing Ma
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Resource Efficient and Robust RSMA for Visible Light Communications IEEE Photon. J. (IF 2.4) Pub Date : 2024-04-16 Jianfei Hu, Chen Sun, Jiaheng Wang, Xiqi Gao, Liang Xia, Qixing Wang
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Design of a low threshold single-mode In-P laser using regrowth-free fabrication IEEE Photon. J. (IF 2.4) Pub Date : 2024-04-16 A. Sharma, P. Landais, M. Srivastava, M. Wallace, F. Smyth, A. Kaszubowska-Anandarajah, P. Anandarajah
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LCD-Based Angle-of-Arrival Estimation of Multiple Light Sources: Paving the Road to Multiuser VLC IEEE Photon. J. (IF 2.4) Pub Date : 2024-04-15 Andrej Harlakin, Peter A. Hoeher
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Deep Reinforcement Learning Based Joint Allocation Scheme in a TWDM-PON-based mMIMO Fronthaul Network IEEE Photon. J. (IF 2.4) Pub Date : 2024-04-15 Yuansen Cheng, Yingjie Shao, Shifeng Ding, Chun-Kit Chan
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Application of $L_{1}-L_{2}$ Regularization in Sparse-View Photoacoustic Imaging Reconstruction IEEE Photon. J. (IF 2.4) Pub Date : 2024-04-15 Mengyu Wang, Shuo Dai, Xin Wang, Xueyan Liu
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Sunlight Noise Mitigation in FMCW LiDAR Using FADOF IEEE Photon. J. (IF 2.4) Pub Date : 2024-04-12 Longfei Yin, Wei Tang, Ziwei Geng, Haodi Zhan, Lei Chen, Dasheng Qian, Guohua Wu, Bin Luo
This paper examines the potential of utilizing a Faraday anomalous dispersion optical filter (FADOF) to enhance noise reduction in a FMCW LiDAR (Frequency-Modulated Continuous-Wave Laser Detection And Ranging) system. While the FMCW LiDAR itself demonstrates a certain level of robustness, it may fail to operate effectively in the presence of significant background noise interference. To address this
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Enhanced Performance of Intensity Modulation With Direct Detection Using Golay Encoded Nyquist Pulses and Electronic Dispersion Compensation IEEE Photon. J. (IF 2.4) Pub Date : 2024-04-09 Julien Moussa H. Barakat, Abdul Rahman El Falou, Zeynep Nilhan G端rkan, Shadi A. Alboon, Abdullah S. Karar
The performance of intensity modulation (IM) with direct detection (DD) transmission systems is enhanced through a novel combination of multidimensional coding, Nyquist pulse shaping, and electronic dispersion compensation (EDC) at the transmitter using a finite impulse response (FIR) filter. A 24-dimensional (24D) extended Golay binary code effectively transforms each incoming 12-bit message into
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Fabrication of High Efficiency Green InGaN/GaN MicroLEDs by Modulating Potential Barrier Height of the Sidewall MQWs in V-Pits IEEE Photon. J. (IF 2.4) Pub Date : 2024-04-08 Hsin-Yu Liu, Donghao Zhang, Zhongying Zhang, Chaohsu Lai, Zongmin Lin, Chia-En Lee, Lijun Bao, Sheng-Po Chang, Shoou-Jinn Chang
In this study, Green MicroLEDs with different H 2 flow during the barrier growth are investigated. We observe that the Indium composition near V-pits affects potential barrier height of the sidewall multiple quantum wells (MQWs) thus has strong impact on screening effect of V-pits. EQE and relative IQE has a dramatically increase with more hydrogen flow during barrier growth, and thermal endurance
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Mixed Gas Detection and Temperature Compensation Based on Photoacoustic Spectroscopy IEEE Photon. J. (IF 2.4) Pub Date : 2024-04-05 Sun Chao, Hu Runze, Liu Niansong, Ding Jianjun
In recent years, with the continuous progress of technology and the development of society, the demand for updating trace gas detection technology has been increasing. The ability to quickly and accurately detect the composition and concentration of gases has become a hot topic in current research. In response to address issues such as difficulties in judging data for classification and recognizing
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A Miniaturized and Intelligent Lensless Holographic Imaging System With Auto-Focusing and Deep Learning-Based Object Detection for Label-Free Cell Classification IEEE Photon. J. (IF 2.4) Pub Date : 2024-04-04 Jin Chen, Wentao Han, Liangzun Fu, Zhihang Lv, Haotian Chen, Wenjing Fang, Jiale Hou, Haohan Yu, Xiwei Huang, Lingling Sun
Cell detection and classification is a key technique for disease diagnosis, but conventional methods such as optical microscopy and flow cytometry have limitations in terms of field-of-view (FOV), throughput, cost, size, and operation complexity. Lensless holographic imaging is a promising alternative that offers large FOV, rich information content, and simple structure. However, its performance on
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Frequency Noise Characterization of Narrow-Linewidth Semiconductor Lasers: A Bayesian Approach IEEE Photon. J. (IF 2.4) Pub Date : 2024-04-04 Lutz Mertenskötter, Markus Kantner
We describe a Bayesian estimation approach to infer on the frequency noise characteristics of narrow-linewidth semiconductor lasers from delayed self-heterodyne beat note measurements. Our technique is grounded in a statistical model of the measurement process that accounts for both the impact of the interferometer and the detector noise. The approach yields accurate results, even in scenarios where
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Polarization-Insensitive Silicon Nitride Photonic Receiver at 1 $\mu$m for Optical Interconnects IEEE Photon. J. (IF 2.4) Pub Date : 2024-04-03 Alexander Caut, Vijay Shekhawat, Victor Torres-Company, Magnus Karlsson
This paper demonstrates with FDTD simulations a silicon nitride polarization independent coarse wavelength division multiplexing (CWDM) receiver platform based on square waveguides for optical interconnects at 1 $\mu$ m. Here, the channel spacing of the demultiplexers is much smaller than standard CWDM systems (25 nm) and is set to 8 nm. To avoid high waveguide propagation and radiation losses, several
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High-Dimensional Quantum Key Distribution in Quantum Access Networks IEEE Photon. J. (IF 2.4) Pub Date : 2024-04-02 Osama Elmabrok, Mohsen Razavi, Tawfig Eltaif, Khaled A. Alaghbari
We investigate the use of high-dimensional quantum key distribution (HD-QKD) for wireless access to hybrid quantum-classical networks. We use $d$ -dimensional time-phase encoded states to exchange a secret key between an indoor wireless user and the central office on the other end of the access network. We evaluate the performance in the case of transmitting quantum and classical signals over the same
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Optimization of Iterative Control Algorithms for High-Resolution Adaptive Optics Systems IEEE Photon. J. (IF 2.4) Pub Date : 2024-04-02 Shenghu Liu, Wang Zhao, Shuai Wang, Kangjian Yang, Ping Yang, Hongli Guan, Han Guo, Ruifeng He
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Adiabaticity Engineered Silicon Coupler With Design-Intended Splitting Ratio IEEE Photon. J. (IF 2.4) Pub Date : 2024-04-01 Chih-Hsien Chen, Yu-Fang Lo, Guan-Xun Lu, Yung-Jr Hung, Shuo-Yen Tseng
We design and experimentally demonstrate compact and robust adiabaticity engineered couplers (AECs) with design intended splitting ratios (SRs) for the silicon-on-insulator platform. Adiabatic couplers (ACs) with variable SRs can be designed by output waveguide width-differences. By analyzing the mode-evolution region of ACs, we redistribute the adiabaticity parameter by engineering the taper function
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Low Spatio-Temporal Frequency Wavefront Aberration Correction Method Based on a Movable Secondary Mirror IEEE Photon. J. (IF 2.4) Pub Date : 2024-03-27 Yawei Xiao, Simin Zhao, Junbo Zhang, Linhai Huang, Naiting Gu
A low frequency wavefront aberration correction method for solar telescopes based on secondary mirror movement is proposed to correct dynamic wavefront aberration during the operation of solar telescope. The correction ability of this method is analyzed and validated by numerical simulation and experiments. Theoretical analysis and numerical simulation both indicate the system processes significant
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A Fast and Effective MIMO Algorithm Using CLR-RNN for Hybrid MDM and WDM Optical Communication System IEEE Photon. J. (IF 2.4) Pub Date : 2024-03-27 Danni Zhang, Zhongwei Tan, Xinyuan Ma, Shun Lu, Wenhua Ren, Fengping Yan
There is an increasing demand for data with the development of the world, and various fiber optic multiplexing techniques have become an important research direction to improve transmission capacity. However, the transmitted signals are subject to great interference due to mode coupling and mode dispersion, which require multiple-input multiple-output (MIMO) digital signal processing techniques to
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Designing a High-Sensitivity Microscale Triple-Band Biosensor Based on Terahertz MTMs to Provide a Perfect Absorber for Non-Melanoma Skin Cancer Diagnostic IEEE Photon. J. (IF 2.4) Pub Date : 2024-03-27 Musa N. Hamza, Mohammad Tariqul Islam, Slawomir Koziel, Muhamad A. Hamad, Iftikhar ud Din, Ali Farmani, Sunil Lavadiya, Mohammad Alibakhshikenari
Non-melanoma skin cancer (NMSC) is among the most prevalent forms of cancer originating in the top layer of the skin, with basal cell carcinoma (BCC) and squamous cell carcinoma (SCC) being its primary categories. While both types are highly treatable, the success of treatment hinges on early diagnosis. Early-stage NMSC detection can be achieved through clinical examination, typically involving visual
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High Performance Self-Powered Photodetectors Based on Graphene Nanoribbons/Al2O3/InGaZnO Heterojunctions IEEE Photon. J. (IF 2.4) Pub Date : 2024-03-26 Xiaoling Ye, Xiaoxiao Zheng, Lei Han, Yu Sun, Liang Wang, Ziheng Li, Wencheng Liu, Benqing Liu, Nan Han, Safia Khan, Syed Hassan Mujtaba Jafri, Mingyang Wang, Yafei Ning, Hu Li
Self-powered photodetectors which operate without external power sources hold immense promise in future photodetection systems. To achieve high-performance self-powered optoelectronic devices, efficient electron-hole pair separation is critical to generate high photocurrents. In this work, we successfully synthesized semiconducting graphene nanoribbons (GNRs) with a direct bandgap of 1.80 eV and employed
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Auxiliary Management and Control Channel (AMCC) for Coherent Frequency-division-multiplexing (FDM) PON IEEE Photon. J. (IF 2.4) Pub Date : 2024-03-26 Jiaye Wang, Wangwei Shen, Jiang Chen, Guoqiang Li, Sizhe Xing, Nan Chi, Junwen Zhang
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C-Band 200 Gbit/s/λ PS-PAM-8 Transmission Over 2-km SSMF for Optical Interconnections IEEE Photon. J. (IF 2.4) Pub Date : 2024-03-26 Xuancheng Huo, Meng Xiang, Gai Zhou, Jilong Li, Jianping Li, Yuwen Qin, Songnian Fu
Driven by the exponential increase of network traffic, the demand for the capacity enhancement of photonic data-center interconnection (DCI) becomes more and more urgent. The utilization of high-order modulation format is ideally preferred to enhance the transmission capacity, considering the bandwidth constraint of optoelectrical devices. Whereas, using high-order modulation format also imposes stringent
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Angle and Polarization Insensitive Mid-Infrared Optical Filters Using Dense 2D Array of Nanophotonic Cavity Resonators IEEE Photon. J. (IF 2.4) Pub Date : 2024-03-25 Matthew Klein, Shivashankar R. Vangala, Joshua R. Hendrickson, Ivan Avrutsky
We report on the design and experimental verification of angle and polarization insensitive mid-infrared filters based on dense arrays of dielectric resonators embedded into a metallic film. We experimentally show filters with 60% peak transmission for angles from 0 to 60 degrees for perpendicular polarization states. We also study the surface plasmonic mode excited due to the periodicity of the micro-resonators
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Instantaneous Frequency Estimation of Radio Frequency Signal Based on Rydberg Atomic Receiver IEEE Photon. J. (IF 2.4) Pub Date : 2024-03-25 Guanyu Chen, Cheng Wang, Bin Yang, Tiantian Chen
Rydberg atom receiver attracts much research interest for promising applications in communications and sensing. Generally, Rydberg atomic receiver is utilized with microwave frequency comb (MFC) to expand its detectable frequency range. MFC consists of a set of equally spaced discrete frequency lines, resembling a comb in frequency space. In such receives, the mixing of RF signal and its closest MFC
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Superpixel Technique Enabled Spatial Phase Modulation Equalization for Power-Efficient Vortex Beam Generation IEEE Photon. J. (IF 2.4) Pub Date : 2024-03-25 Ruhao Zhao, Junpeng Zheng, Cong Zhang, Meng Xiang, Gai Zhou, Yi Xu, Yuwen Qin, Songnian Fu
Realizing a spatial phase modulation (SPM) from 0 to 2π is vital for achieving precise light field manipulation, when the phase-only spatial light modulator (SLM) is driven by the voltage. However, insufficient bias voltage degrades the quality of the generated structured light. Here, we propose a superpixel method that consists of 2 × 2 adjacent pixels to equalize the imperfect SPM response, when
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C-HRNet: High Resolution Network Based on Contexts for Single-Frame Phase Unwrapping IEEE Photon. J. (IF 2.4) Pub Date : 2024-03-25 Wenbo Zhao, Jing Yan, Dongyang Jin, Jing Ling
Phase unwrapping is an important research direction in fringe projection profilometry. Improving the accuracy of phase unwrapping from a single wrapped phase map has been a research focus. Existing the deep learning mathods for phase unwrapping from a single wrapped phase map suffer from accuracy issues when dealing with noise, the large variation range of phase surfaces, or isolated area. In this
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Frame Segmentation in Ultrahigh-Speed Spectrum Analyzer Based on Time-Lens IEEE Photon. J. (IF 2.4) Pub Date : 2024-03-22 Renchu Tang, Liao Chen, Yufan Du, Danhua Cao
With the development of high-frequency carriers and high-capacity communications, ultrahigh-speed spectrum analyzer based on all-optical methods has been demonstrated in many fields. Limited by current data processing algorithms, ultrahigh-speed spectrum analyzers based on time-lens, such as frequency-domain light intensity spectrum analyzer ( f -LISA) and parametric spectro-temporal analyzer (PASTA)
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Optical Mode Calculation in Large-Area Photonic Crystal Surface-Emitting Lasers IEEE Photon. J. (IF 2.4) Pub Date : 2024-03-21 Mindaugas Radziunas, Eduard Kuhn, Hans Wenzel, Ben King, Paul Crump
We discuss algorithms and numerical challenges in constructing and resolving spectral problems for photonic crystal surface-emitting lasers (PCSELs) with photonic crystal layers and large (up to several tens of mm $^{2}$ ) emission areas. We show that finite difference schemes created using coarse numerical meshes provide sufficient accuracy for several major (lowest-threshold) modes of particular
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Broadband Polarization-Independent Edge Couplers With High Efficiency Based on SiN-Si Dual-Stage Structure IEEE Photon. J. (IF 2.4) Pub Date : 2024-03-20 Yang Jiang, Zhewei Zhang, Peng Liu
Silicon nitride (SiN) plays a critical role in silicon photonics because of its lower refractive index, low waveguide loss, broad operating bandwidth and compatibility with complementary metal oxide semiconductor (CMOS) fabrication process. Here, we propose a polarization-independent sub-wavelength grating (SWG) edge coupler with high efficiency based on SiN-Si dual-stage structure with a length of
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Single-Polarization and Single-Mode Hybrid Hollow-Core Anti-Resonant Fiber Design at 2 μm IEEE Photon. J. (IF 2.4) Pub Date : 2024-03-20 Herschel Herring, Mohammad Al Mahfuz, Md. Selim Habib
In this paper, to the best of our knowledge, a new type of hollow-core anti-resonant fiber (HC-ARF) design using hybrid silica/high-index material (HIM) cladding is presented for single-polarization, high-birefringence, and endlessly single-mode operation at 2 μm wavelength. We show that the inclusion of a HIM layer in the cladding allows strong suppression of $x-$ polarization, while maintaining low
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Study on Dynamic Error Compensation of Laser Emitter for Digging Navigation System IEEE Photon. J. (IF 2.4) Pub Date : 2024-03-20 Jingdao Fan
Laser emitters are used to generate vertically intersecting structured light, which can provide a reference for pose measurement. Therefore, the accuracy of the pose measurement system is determined by the accuracy of laser emitter instruments. The motion joint errors of the mechanical structure of the laser emitter instrument are analyzed and the transverse and longitudinal error transmission models
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Demonstration of an On-Chip TE-Pass Polarizer Based on Radiation Coupling IEEE Photon. J. (IF 2.4) Pub Date : 2024-03-19 Li Zhang, Shengjie Tang, Cheng Chen, Haibin Lv, Xiaoping Liu
An on-chip, high-extinction-ratio transverse electric (TE) pass polarizer utilizing a silicon oxynitride (SiON) slab has been proposed and experimentally verified. The power confinement ratio of the mode field is manipulated by using a SiON slab, where most of the power of the transverse magnetic (TM) mode is transferred to the upper SiON slab and then attenuated through radiation, while the TE mode
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Optical Gain in AlGaN Quantum Wells: Impact of Higher Energy States IEEE Photon. J. (IF 2.4) Pub Date : 2024-03-19 Sebastian Kölle, Friedhard Römer, Giulia Cardinali, Alexander Schulz, Norman Susilo, Daniel Hauer Vidal, Tim Wernicke, Michael Kneissl, Bernd Witzigmann
Simulations of optical gain in aluminum gallium nitride (AlGaN) quantum wells are extended to the high charge carrier density regime required for achieving gain at 275 nm for UV laser diodes. Coulomb interaction is modeled using the 2nd Born approximation. We demonstrate good agreement with experimental data obtained through optical pumping, and predict gain spectra for electrical pumping. Special
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Tailoring the Generalized 2D Airy Beam IEEE Photon. J. (IF 2.4) Pub Date : 2024-03-19 Junpeng Zheng, Ruhao Zhao, Cong Zhang, Meng Xiang, Gai Zhou, Yi Xu, Songnian Fu, Yuwen Qin
Generalized two-dimensional (2D) Airy beam is a kind of self-accelerating beam with variable initial angle between its two wings, manifested itself as an initial angle determined parabolic trajectory during the free-space propagation. However, the independent and flexible manipulation of both the transverse optical field and longitudinal trajectory of the generalized 2D Airy beam has not been achieved
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Increasing Single-Mode Power in VCSELs With Antiresonant Oxide Island IEEE Photon. J. (IF 2.4) Pub Date : 2024-03-19 Marta Więckowska, Maciej Dems
This article focuses on increasing the single-mode power in Vertical Cavity Surface Emitting Lasers (VCSELs) through the strategic integration of an antiresonant oxide islands. Using a gallium arsenide-based VCSEL as a case study, we explore the influence of oxide island parameters on lateral mode discrimination in term of threshold currents and emitted powers. The analysis confirms non-uniform variations
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Experimental Demonstration and Characterization of a Non-Mode Selective (De)Multiplexer Using Multi-Plane Light Converter (MPLC) IEEE Photon. J. (IF 2.4) Pub Date : 2024-03-19 Shree R. Thapa, Seth Smith-Dryden, Zheyuan Zhu, Shuo S. Pang, Guifang Li
We experimentally demonstrate the use of a multi-plane light converter (MPLC) as a non-mode selective (de)multiplexer for converting Hermite-Gaussian (HG) modes into a Hadamard matrix of fundamental Gaussian spots and vice versa. We interferometrically measure and characterize the complex output of the device and successfully demonstrate the conversion between HG modes and Hadamard matrices of Gaussian
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Exploiting Extraordinary Optical Transmission in Plasmonic Slit Nanoantennas for Sensor Applications IEEE Photon. J. (IF 2.4) Pub Date : 2024-03-18 Ricardo A. Marques Lameirinhas, Catarina P. Correia V. Bernardo, João Paulo N. Torres, António Baptista, Maria João M. Martins
In this article, a plasmonic gold nanoantenna is proposed as a sensor to monitor refractive index variations between 1.30 and 1.35. These values are defined since they are characteristic of, for instance, water-based solutions, DNA, or haemoglobin. To simulate the device a novel model is used, which takes advantage of the wave-particle dualism and the generalised Fresnel coefficients for absorbing
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Evolution of Degenerate Pairs of Bound States in the Continuum With Broken Symmetry IEEE Photon. J. (IF 2.4) Pub Date : 2024-03-18 Wenzheng Zhao, Weimin Wang, Zhao-xian Chen, Xingsheng Luan, Jun-long Kou, Yan-qing Lu
Bound states in the continuum (BICs) with exceptionally high quality factors ( $Q$ factors) have become focal points in photonic device research, finding applications in nonlinear enhancement, laser generation, sensing, and beyond. In this study, we systematically investigate the intricate relationship between the in-plane symmetry groups of photonic crystals and symmetry-protected BICs (SP-BICs) using
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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
A solid-state three-dimensional (3-D) range imager using the pulsed time-of-flight principle and a single photon avalanche diode (SPAD) based receiver is demonstrated. Contrary to conventional flood illumination, the suggested system uses sequentially scanned illumination stripes to increase the irradiance under the measured field of view and to reduce the receiver complexity. At equal average illumination
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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
Invasive blood testing is the most used method for testing bilirubin levels. However, invasive blood testing must be carried out by professionally trained medical staff to avoid the risk of infection. Apart from being present in blood, direct bilirubin is excreted in human urine. Therefore, this study proposed a non-invasive method, using high collimation ultraviolet-light-emitting diodes (HC UV-LEDs)
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1.12Tbps-16QAM Uncompensated Long-Haul Transmission Employing a New Self-Oscillating 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 new optoelectronic oscillator (OEO) is implemented for a novel self-sustained flat-topped self-oscillating optical frequency comb generator (SO-OFCG), which can be deployed in terahertz optical transmission. The OFCG is designed from a cascaded configuration of an electro-absorption modulator and a polarization controller. In this work, the radio frequency source of a traditional-OFC scheme is replaced
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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
Conventional multiple input multiple output (MIMO) detection algorithms face challenges related to computational complexity and limited performance when handling high-dimensional inputs and complex channel conditions. In order to enhance signal recovery accuracy in atmospheric turbulence channels for faster-than-Nyquist (FTN) optical wireless communication (OWC) systems, a deep learning (DL) based
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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
Optical vortices (OV) with an open shape have a unique function in directional particle transport and collection. A power-exponent-phase vortex (PEPV) has received particular attention as a type of unconventional vortex beam with a large opening and carrying orbital angular momentum (OAM). So far, only the generation methods and properties of an individual PEPV beam have been studied and analyzed.
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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
This study experimentally demonstrates both inter-chip and intra-chip RF transmission for short-range microwave communication using on-chip antennas, implemented on a silicon photonic platform. The unification of antenna with photonic integrated circuits (PICs) reduces system loss for high data rate communication by eliminating parasitics. We designed, fabricated, and measured two antenna topologies
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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
By inserting a modulator in the imaging system and scanning in different positions, ptychographic modulation imaging can achieve higher quality reconstruction for smooth or weakly scattered objects compared to conventional ptychography imaging. However, its imaging resolution is still limited by the pixel size of the detector. In this paper, divergent illumination is introduced to enhance imaging resolution
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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
The Doppler Asymmetric Spatial Heterodyne (DASH) spectrometer is a new type of high-resolution spectral measurement instrument that has received widespread attention in re-cent years. However, in previous ground experiments, laser sources were often used so that without exposing the premise and limitations of its high measurement accuracy. Therefore, this article provides a detailed introduction to
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Simulation of the Mode Dynamics in Broad-Ridge Laser Diodes IEEE Photon. J. (IF 2.4) Pub Date : 2024-03-07 Eduard Kuhn
In this publication a new approach to simulate the mode dynamics in broad-ridge laser diode is presented. These devices exhibit rich lateral mode dynamics in addition to longitudinal mode dynamics observed in narrow-ridge laser diodes. The mode dynamics are strongly influenced by higher order effects, which are described by effective interaction terms and can derived from the band structure and the
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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
The integration of temperature sensors directly onto photonic platforms facilitates the thermal management of advanced photonic integrated circuits. This paper presents monolithic temperature sensors on the indium-phosphide-based photonic integration technology. Two distinct sensors were developed using p-i-n diode junctions with different waveguide core layers, one composed of multiple quantum wells
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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
In this article, we use a time-domain traveling-wave approach with a coupled-mode theory to describe the dynamics of a mid-Infrared (MIR) Quantum Cascade Laser (QCL) in the Distributed-Feedback (DFB) configuration. We demonstrate that linewidth enhancement factor (LEF) and spatial hole burning (SHB) play a crucial role in influencing the device's single-mode behavior. Neglecting them leads to an overestimation
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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
We present a novel approach for designing non-uniform binary long-period gratings with predefined transmission characteristics by directly optimizing the coupling strengths and lengths of the constituent waveguides in all grating segments. The optimal grating parameters were determined by minimizing the deviation of the transmission characteristics calculated using the transfer matrix method from the