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2-μm 1.5-W optically pumped semiconductor membrane laser IEEE Photon. Technol. Lett. (IF 2.6) Pub Date : 2024-03-13 Maximilian C. Schuchter, Nicolas Huwyler, Matthias Golling, Marco Gaulke, Ursula Keller
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Hybrid laser cavity design for improved photon lifetime and performance IEEE Photon. Technol. Lett. (IF 2.6) Pub Date : 2024-03-08 Yash Mehta, Kun-Chieh Chien, Lei Lei, Kenan Gundogdu, Chih-Hao Chang, Franky So
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Hardware Fingerprint Authentication Based on Siamese Neural Networks in PON IEEE Photon. Technol. Lett. (IF 2.6) Pub Date : 2024-03-07 Danming Huang, Lei Deng, Qi Yang, Xiaoxiao Dai, Deming Liu, Mengfan Cheng
This letter presents a novel approach to bolster the physical layer security of optical communication systems, specifically within Passive Optical Networks (PONs), through the utilization of device fingerprints. In this proposed scheme, we employ Optical On-Off Keying (OOK) modulation for signal transmission and subsequently extract distinct fingerprint features from the eye diagrams of these OOK signals
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A Novel Optically Controlled BeamForming Network Using Fiber Bragg Gratings IEEE Photon. Technol. Lett. (IF 2.6) Pub Date : 2024-03-06 Lukui Jin, Mengyuan Ru, Xiaolong Xie, Yiqun Zhang, Jiayin Xue
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Influence of Nitrogen doping in Vanadium-compensated 4H-SiC on transient photocurrent response for photoconductive microwave generation IEEE Photon. Technol. Lett. (IF 2.6) Pub Date : 2024-03-05 Xu Chu, Jin Meng, Haitao Wang, Danni Zhu, Yuzhang Yuan, Liyang Huang, Zhongwu Xiang, Jiangfeng Han, Bingfang Deng, Yancheng Cui, Jiahao Zhang
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Quasi Single-Mode Fiber with Record-Low Attenuation of 0.1400 dB/km IEEE Photon. Technol. Lett. (IF 2.6) Pub Date : 2024-03-04 R. R. Khrapko, S. L. Logunov, M. Li, H. B. Matthews, P. Tandon, C. Zhou
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On Topology Optimization Strategies for Ultra-Compact High Contrast Grating Design IEEE Photon. Technol. Lett. (IF 2.6) Pub Date : 2024-03-01 Jacob M. Hiesener, Robert P. Pesch, Stephen E. Ralph
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Refined Spectral Regulation of Chirped Fiber Bragg Gratings IEEE Photon. Technol. Lett. (IF 2.6) Pub Date : 2024-02-29 Zhanwu Xie, Pengfei Li, Dongmei Guo, Hui Hao, Haitao Yan
A novel technique is proposed for refining the spectral regulation of chirped fiber Bragg gratings (CFBGs) during the fabrication process, utilizing an ultraviolet (UV) laser with a chirped phase mask. By incorporating an additional phase into the Hamming window function, a new laser control function is generated. This supplementary phase directly enhances the waveform shift parameter and introduces
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Design and Experimental Study of Wavelength Beam Combining System Using Full-bar Diode Laser Stacks IEEE Photon. Technol. Lett. (IF 2.6) Pub Date : 2024-02-29 Chiang-Hsin Lin, Jian-Hung Lin, Po-Tse Tai, Tsong-Dong Wang, Bo-Kai Feng, Chia-Ching Chou, Pin Han
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40 Gb/s Secure Coherent Optical Communication Based on Electro-Optic Phase Feedback Encryption IEEE Photon. Technol. Lett. (IF 2.6) Pub Date : 2024-02-29 Xulin Gao, Wenfu Gu, Zhitao Deng, Xinyi Li, Jinyang Ye, Yuehua An, Shubo Bi, Anbang Wang, Yuncai Wang, Yuwen Qin, Zhensen Gao
In the current context of information explosion, securing the physical layer in the backbone networks of coherent optical communication is vitally important. In this letter, we experimentally validate a secure communication scheme for coherent optical communication systems based on electro-optic phase feedback encryption, thereby successfully transmitting a 40 Gb/s dual-polarization quadrature phase
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Amplification of Multi-Order OAM Modes With High Gain and Low Differential Modal Gain IEEE Photon. Technol. Lett. (IF 2.6) Pub Date : 2024-02-29 Jiaqi Wang, Hu Zhang, Haixia Feng, He Wen, Cheng Du, Wei Li, Jing Yang, Fan Zhang, Han Ye, Lixia Xi, Xiaoguang Zhang
In this letter, we proposed and fabricated a single ring uniform erbium-doped ring-core fiber with trench assisted to achieve high modal gain and low differential modal gain (DMG) in amplifying orbital angular momentum (OAM) modes. This is enabled by confining all modes effectively in a highly similar area to improve the overlap integral of erbium ions and mode fields. Theoretical analyses and experimental
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Multi-Period Fast Rotating Optical Delay Line With 228.47 ps Delay Time IEEE Photon. Technol. Lett. (IF 2.6) Pub Date : 2024-02-29 Lili Zhu, Junwen Xue, Jiaojiao Ren, Dandan Zhang, Jian Gu, Jiyang Zhang, Lijuan Li
Optical delay line (ODL) plays a crucial role in various detection techniques such as terahertz time-domain spectroscopy (THz-TDS), and optical pump detection. This letter proposes a novel multi-mirror array optical delay line (MMAODL) structure suitable for THz-TDS systems, which consists of a laser collimator, a rotating disk, a multi mirror array, a pyramid prism, and a plane mirror. Based on the
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Dual-mode Vertex-deformed Square Microcavity Lasers IEEE Photon. Technol. Lett. (IF 2.6) Pub Date : 2024-02-28 Yang Shi, Meng-Wei Sheng, Ting Wang, Hang-Dong Wei, Yue-De Yang, Jin-Long Xiao, You-Ling Chen, Yong-Zhen Huang
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Gain Dynamics of Few-Mode Erbium-Doped Fiber Amplifier IEEE Photon. Technol. Lett. (IF 2.6) Pub Date : 2024-02-28 Hirotaka Ono, Makoto Yamada
A model describing the dynamic behavior of a few-mode erbium-doped fiber amplifier (FM-EDFA) is derived using the average inversion level. In that model, when the amplification overlap factor and equivalent area are independent of time, the dynamic behavior of an FM-EDFA is described by a differential equation of the average inversion level. This condition is satisfied for an FM-EDFA with a ring-core
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Enhanced Color Quality of WLEDs by Cone-Shape Multi-Color Phosphor-in-Glass IEEE Photon. Technol. Lett. (IF 2.6) Pub Date : 2024-02-28 Hao Cheng, Zhenyu Lei, Qing Wang, Lei Nie, Yang Peng, Mingxiang Chen
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Research on Temperature-Insensitive Micro-Displacement Sensor Cascaded With Spherical Structure IEEE Photon. Technol. Lett. (IF 2.6) Pub Date : 2024-02-28 Jinlin Mu, Weihua Zhang, Zhengrong Tong, Haozheng Yu, Yipeng Tao, Xue Wang
A temperature-insensitive micro-displacement optical fiber sensor is presented. The sensor is composed of a section of spindle-shaped SMF cascaded with two spherical structures. The sensor characteristics are enhanced by utilizing the bending action of the spindle-shaped structure and the coupling action of the spherical structure. In this experiment, the sensing characteristics of micro-displacement
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High-Q Silicon-Based Metasurface Perfect Absorber via Geometrical Perturbation Assisted Resonances IEEE Photon. Technol. Lett. (IF 2.6) Pub Date : 2024-02-28 Xiaoshan Liu, Shimei Song, Xiangman Wu, Zhengqi Liu
A multi-band high- $Q$ silicon-based metasurface light absorber is demonstrated via introducing geometrical perturbation for excitation of multipolar resonances. The displacement perturbation enables the ultra-sharp and near-unity absorption bands, leading to a 30-fold increase of the spectral $Q$ factor and 12-fold enhancement of the absorptance in comparison to that of the un-perturbed silicon resonators
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Analysis and Optimization of Error Tolerance in an Incoherent Beam Combination System IEEE Photon. Technol. Lett. (IF 2.6) Pub Date : 2024-02-27 Mukesh Kumar, Arpit Khandelwal, Syed Azeemuddin
In this letter, we have modeled and analyzed the impact of alignment errors in fiber lasers and collimating lens arrays on incoherent beam combination systems. The combined intensity expression is calculated considering different errors, and efficiency comparisons are made between 7 and 61 laser beam arrays. The results show that the misalignment error also increases with an increase in the number
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Acoustic Diagnostics of Femtosecond Laser Filamentation IEEE Photon. Technol. Lett. (IF 2.6) Pub Date : 2024-02-26 Binpeng Shang, Zhi Zhang, Nan Zhang, Pengfei Qi, Jiewei Guo, Shishi Tao, Lie Lin, Weiwei Liu
The promising application of femtosecond laser filamentation in atmospheric remote sensing brings imperative demand for diagnosing the spatiotemporal dynamics of filamentation. Acoustic emission (AE) during filamentation opens the door to giving insight into the dynamic evolution of filaments in air. In particular, the frequency features of the acoustic emission provide relevant information on the
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Approximately Equal Cross-Polarized Reflection Coefficients for Metasurface IEEE Photon. Technol. Lett. (IF 2.6) Pub Date : 2024-02-26 Xiaobo Liu, Rui Lu, Anxue Zhang, Xiaoming Chen
Traditionally, the reciprocity theorem is aimed at the waves with two reciprocal propagation directions. However, it is verified that two reflection coefficients of the sub-wavelength metasurface are approximately equal for the cross-polarized waves with the same propagation directions. Due to the sub-wavelength characteristics, the zero-order mode as free wave nearly dominates the metasurface, while
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Sparse Aperiodic Optical Phased Arrays on Polymer Integration Platform IEEE Photon. Technol. Lett. (IF 2.6) Pub Date : 2024-02-20 Adam Raptakis, Georgios Lymperakis, Lefteris Gounaridis, Madeleine Weigel, Moritz Kleinert, Christos Tsokos, Panos Groumas, Efstathios Andrianopoulos, Norbert Keil, Hercules Avramopoulos, Christos Kouloumentas
We demonstrate solid-state optical beam-steering utilizing polymer waveguides as edge emitters to form optical phased arrays (OPAs) for operation at 1550 nm. Waveguide spacing below the wavelength is hindered in low index contrast OPAs by cross-coupling, leading to the formation of unwanted grating lobes in the far field. We employ non-uniform spacing between the 16 channels of the OPAs to suppress
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Demonstration of an Ultra-Compact and Broadband TM-Pass Polarizer Using Nano-Elliptical Holes IEEE Photon. Technol. Lett. (IF 2.6) Pub Date : 2024-02-20 Yaxin Yu, Zhenzhao Guo, Shengbao Wu, Jinbiao Xiao
An ultra-compact and large-bandwidth transversal magnetic (TM) polarizer is proposed and demonstrated. Low-loss propagation of TM modes is enabled by the creation of a bandgap using nano-elliptical holes, while transverse electric (TE) modes are effectively suppressed. Theoretical analysis results show that the proposed devices have a bandwidth (BW) over 305 nm (1394 nm~1699 nm) with a polarization
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Ellipticity Enhancement of a Terahertz Wave Circular Polarizer Made of 3D Chiral Metamaterial IEEE Photon. Technol. Lett. (IF 2.6) Pub Date : 2024-02-20 Kotaro Yamamura, Gemma Otake, Atsushi Ouchi, Daniel Moraru, Atsushi Nakamura, Saroj R. Tripathi
Chiral metamaterials, such as helix arrays, have attracted significant attention due to their ability to manipulate the polarization properties of electromagnetic waves. The helix array can be used to fabricate a polarizer that selectively transmits circularly polarized light according to the handedness of the helix. However, the transmitted light is not purely circularly polarized due to unwanted
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Bright-Dark Pulse Pair in a Passively Mode-Locked Fiber Laser Based on Thulium-Doped Fiber IEEE Photon. Technol. Lett. (IF 2.6) Pub Date : 2024-02-19 Wenyan Zhang, Lei Zheng, Huijie Jiang, Nannan Liu, Kun Yang, Tianhao Xian, Li Zhan
A dual-wavelength bright-dark pulse pair has been experimentally demonstrated in a mode-locked fiber laser based on thulium-doped fiber (TDF). By appropriately adjusting the polarization state, the dual-wavelength bright-dark pulse pairs with fundamental frequency of 20.56 MHz can be successfully obtained under the pump power ranging from 150 to 500 mW. The largest pulse energy is 2.84 nJ, and the
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Temperature and Curvature Microfiber Mach-Zehnder Interferometer Sensor Based on Double Peanut-Shaped Structures and Tapered Coreless Fiber IEEE Photon. Technol. Lett. (IF 2.6) Pub Date : 2024-02-19 Xiaojun Zhu, Jiayi Qian, Wen Liu, Juan Cao, Yongjie Yang, Guoan Zhang, Yan Cai, Yuechun Shi, Wuming Wu
We propose and demonstrate a new temperature and curvature sensor based on double peanut-shaped structures and tapered coreless fiber (CLF) using microfiber Mach-Zehnder interferometer (MMZI) technology. The peanut structure is comprised of single-mode fiber (SMF) and CLF, and fused sphere in each fiber end to create a high sensing performance. By combining the characteristics of the peanut-shaped
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Widely Tunable Narrow-Linewidth Laser Based on a Multi-Period-Delayed Feedback Photonic Circuit IEEE Photon. Technol. Lett. (IF 2.6) Pub Date : 2024-02-19 Jian Wang, Bei Chen, Dechao Ban, Ya Jin, Keqi Cao, Chenwei Zhang, Changda Xu, Wenting Wang, Yu Liu, Ming Li, Ninghua Zhu
A widely tunable narrow-linewidth laser consisting of a sampled-grating distributed Bragg reflector (SG-DBR) laser and an external silica-based multi-period-delayed feedback (MPDF) photonic circuit is fabricated and experimentally demonstrated. The measured results show that a 58-nm lasing wavelength tuning range together with a more than 40 dB side-mode suppression ratio can be achieved. Notably,
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A High Extinction Ratio Silicon Thermo-Optic Switch With Variable Splitter and Spiral Phase Shifters IEEE Photon. Technol. Lett. (IF 2.6) Pub Date : 2024-02-19 Dongdong Lin, Zhiyao Yang, Qiang Liu, Dan Zhu, Jingzhan Shi, Yiping Wang
We designed and fabricated a high extinction ratio silicon Mach-Zehnder thermo-optic switch with variable splitter and spiral phase shifters. The proposed TO switch can achieve high extinction ratios over 38 dB from 1520 nm to 1580 nm for both bar-port and cross-port with maximum value over 45 dB around 1560 nm. In addition, the proposed silicon thermo-optic switch can achieve lower power consumption
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Study of Gain Spatial Nonuniformity in n-on-p and p-on-n 4H-SiC Avalanche Photodiodes IEEE Photon. Technol. Lett. (IF 2.6) Pub Date : 2024-02-19 Tianyi Li, Yan Zhou, Xiaoqiang Tao, Weizong Xu, Dong Zhou, Fangfang Ren, Dunjun Chen, Rong Zhang, Youdou Zheng, Hai Lu
In this work, the gain spatial nonuniformity within the active regions of n-on-p and p-on-n 4H-SiC avalanche photodiodes are investigated by using both two-dimensional photocurrent mapping and hot carrier luminescence imaging techniques. Under high gain operation condition, it is found that local photocurrent within the mesa region is always higher in [ $\overline {11}20$ ] direction for the n-on-p
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Variable Optical Attenuator Based on a PDMS-Embedded Microfiber Coupler IEEE Photon. Technol. Lett. (IF 2.6) Pub Date : 2024-02-19 Zipei Yuan, Hubiao Fang, Yu Xie, Jianbin Zhang, Keying Liu, Xin Guo, Limin Tong
We demonstrate a novel fiber-compatible variable optical attenuator (VOA) based on a tunable microfiber coupler, which is assembled by embedding two parallel 2.5- $\mu \text{m}$ -diameter microfibers in a 250- $\mu \text{m}$ -thickness polydimethylsiloxane (PDMS) film with a separation of $2.5~\mu \text{m}$ and a coupling length of 3 mm. Based on the strain-dependent refractive index of the PDMS, the
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Temperature-Insensitive Tunable Optical Filter Based on a Microsphere-Coupled Off-Core Spliced Fiber IEEE Photon. Technol. Lett. (IF 2.6) Pub Date : 2024-02-19 Gerard Tatel, Pedro Tovar, Élyse D’Aoust, Xiaoyi Bao
A low-cost fiber-integrated temperature-insensitive tunable Fabry-Pérot filter fabricated from an off-core spliced segment of standard single mode fiber (SMF) and a commercially available barium titanate (BaTiO3) microsphere is proposed and demonstrated. The filter’s cavity extends from the cleaved face of the launching SMF to the back face of the microsphere, thus forming a hybrid (air + BaTiO3) cavity
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IEEE Photonics Technology Letters Information for Authors IEEE Photon. Technol. Lett. (IF 2.6) Pub Date : 2024-02-12
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TechRxiv: Share Your Preprint Research with the World! IEEE Photon. Technol. Lett. (IF 2.6) Pub Date : 2024-02-12
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IEEE Photonics Technology Letters Information for Authors IEEE Photon. Technol. Lett. (IF 2.6) Pub Date : 2024-02-12
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IEEE Photonics Technology Letters publication information IEEE Photon. Technol. Lett. (IF 2.6) Pub Date : 2024-02-12
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IEEE Photonics Technology Letters publication information IEEE Photon. Technol. Lett. (IF 2.6) Pub Date : 2024-02-12
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Experimental Demonstration of Multi-channel Frequency Quadrupling for Analog Optical Fronthauling IEEE Photon. Technol. Lett. (IF 2.6) Pub Date : 2024-02-12 S J Sreeraj, B Lakshman, Radhakrishna Ganti, David Koilpillai, Ampalavanapillai Nirmalathas, Deepa Venkitesh
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IEEE Photonics Technology Letters publication information IEEE Photon. Technol. Lett. (IF 2.6) Pub Date : 2024-02-12
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IEEE Photonics Technology Letters Information for Authors IEEE Photon. Technol. Lett. (IF 2.6) Pub Date : 2024-02-12
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IEEE Photonics Technology Letters publication information IEEE Photon. Technol. Lett. (IF 2.6) Pub Date : 2024-02-12
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IEEE Photonics Technology Letters Information for Authors IEEE Photon. Technol. Lett. (IF 2.6) Pub Date : 2024-02-12
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High-Precision Correction for Spatial Light Modulator Based on Quadriwave Lateral Shearing Interferometry IEEE Photon. Technol. Lett. (IF 2.6) Pub Date : 2024-02-08 Zhengqiong Dong, Ren Xu, Xinqin Liu, Xianwen Huang, Xiangdong Zhou, Lei Nie, Jinlong Zhu
Because the modulation accuracy and precision of liquid crystal spatial light modulator (LC-SLM) are strongly influenced by difference in operation conditions and the manufacturing errors of spatial light modulator, it is an essential procedure to measure and calibrate its phase modulation characteristics such as phase errors and nonlinear compensation quality. In this letter, we propose a novel method
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A Reflective Whispering Gallery Mode Microsphere Resonator Integrated With a Thick-Wall Capillary Tube IEEE Photon. Technol. Lett. (IF 2.6) Pub Date : 2024-02-08 Juanjuan Rao, D. N. Wang, Ben Xu, Kai Yang
A reflective whispering gallery mode microsphere resonator is presented. The device consists of a single-mode fiber, a thick-wall capillary tube, and a microsphere. The capillary tube and single-mode fiber are firstly conically fused together using a fusion splicer, followed by tapering the capillary tube, then cut at the end of tapered region of capillary tube, and finally, the microsphere is inserted
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Novel Wavelengths Watt-Level Pr3+:LiYF4 Orange Lasers IEEE Photon. Technol. Lett. (IF 2.6) Pub Date : 2024-02-07 Zhiping Cai, Wei Yuan, Run Fang, Xiuji Lin, Huiying Xu
We report the first demonstration on four new wavelengths of 609 nm, 613 nm, 618 nm in both $\sigma $ - and $\pi $ -polarized direction based on continuous-wave Pr $^{3+}$ :LiYF4(Pr $^{3+}$ :YLF) lasers. The transitions mechanism combined dual upper energy levels of $^{3}\text{P}_{1}$ and $^{1}\text{I}_{6}$ with Stark sub-levels of $^{3}\text{H}_{6}$ and $^{3}\text{F}_{2}$ was designated. The CW lasers
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A Secondary Mirror Alignment Method for Segmented Telescopes Using a Wavefront Sensor-Less Method IEEE Photon. Technol. Lett. (IF 2.6) Pub Date : 2024-02-06 Min Li, Xin Liu, Ang Zhang, Junbo Zhang, Hao Xian
The precise secondary mirror alignment is a key factor to ensure the imaging quality of a segmented telescope with a high resolution demand. In this letter, a two-step alignment method using an improved stochastic parallel gradient descent (SPGD) algorithm called Nadam SPGD algorithm is proposed. Simulation results show that our method can distinguish aberrations caused by phase errors of the primary
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Pipeline Leaks Early Warning Based on Distributed Optical Fiber Sensing Technology IEEE Photon. Technol. Lett. (IF 2.6) Pub Date : 2024-02-06 Muxin Jia, Zhaoxiong Sun, Chao Duan, Tao Tan, Xuan Du, Ye Tian, Yuxiang Luo, Jianzhong Zhang
To address the problem of early warning of pipeline leakage, this letter proposes a pipeline leakage early warning method based on DAS. Through DAS monitoring the vibration signals induced by different degree of pipeline corrosion and blockage, using pattern recognition techniques, distributed early warning and location of pipeline leakage are realized. By conducting simulations and experimental analyses
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High-Speed 645-nm VCSELs for Low-Scattering-Loss Gb/s Underwater Wireless Optical Communications IEEE Photon. Technol. Lett. (IF 2.6) Pub Date : 2024-01-30 Nawal Almaymoni, Omar Alkhazragi, Wahyu Hendra Gunawan, Georgian Melinte, Tien Khee Ng, Boon S. Ooi
With the evolution of underwater wireless optical communications, semiconductor lasers, particularly blue and green diode lasers, have exhibited high performance as optical transmission sources. They have a wide modulation bandwidth and can offer data rates in the Gb/s range in pure water. However, blue and green wavelengths experience higher attenuation coefficients and more considerable scattering