IEEE Photonics Technology Letters最新文献_第8页

DifSG2-CCL: Image Reconstruction Based on Special Optical Properties of Water Body DifSG2-CCL：基于水体特殊光学特性的图像重构

IF 2.3 3区工程技术

IEEE Photonics Technology Letters Pub Date : 2024-10-23 DOI: 10.1109/LPT.2024.3484656

Feifan Yao;Huiying Zhang;Yifei Gong

{"title":"DifSG2-CCL: Image Reconstruction Based on Special Optical Properties of Water Body","authors":"Feifan Yao;Huiying Zhang;Yifei Gong","doi":"10.1109/LPT.2024.3484656","DOIUrl":"https://doi.org/10.1109/LPT.2024.3484656","url":null,"abstract":"Addressing the unique optical properties of water in underwater images, this letter introduces the DifSG2-CCL model for generating images in complex underwater environments, aiming to mitigate the effects of water quality factors on the generated images. This letter proposes U-CCL (Underwater Cycle Consistency Loss) in the generator loss, allowing the generator to preserve real image information during conversion by reflecting the shot to prevent information loss. Consequently, the generated image is not only more realistic, but also highly consistent with the real image in content. Additionally, this letter utilizes the publicly available 9.235k Sea Anemone Dataset (SA Dataset) with a resolution of \u0000<inline-formula> <tex-math>$256times 256$ </tex-math></inline-formula>\u0000 for training. Experimental results indicate that assigning a weight of 1 to DiffSG2-CCL achieves the best training effect, reducing the FID value to 8.97, while significantly improving the detail and texture of the generated images, approaching aesthetic vision. Thus, this method effectively mitigates the special optical properties of water bodies and offers innovative approaches for generating images in complex underwater environments. The experimental code with pre-trained models will be published shortly at \u0000<uri>https://github.com/yff0428/DifSG2-CCL/tree/master</uri>\u0000.","PeriodicalId":13065,"journal":{"name":"IEEE Photonics Technology Letters","volume":"36 24","pages":"1417-1420"},"PeriodicalIF":2.3,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142565603","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ultra-Low Power In-Sensor Computing β-Ga₂O₃ Ultraviolet Optoelectronic Synaptic Devices 超低功耗传感器内计算 β-Ga₂O₃ 紫外光电突触器件

IF 2.3 3区工程技术

IEEE Photonics Technology Letters Pub Date : 2024-10-21 DOI: 10.1109/LPT.2024.3483815

Xiang Wang;Yingxu Wang;Haoxuan Peng;Chengyan Zhong;Maolin Zhang;Yufeng Guo;Yu Liu

{"title":"Ultra-Low Power In-Sensor Computing β-Ga₂O₃ Ultraviolet Optoelectronic Synaptic Devices","authors":"Xiang Wang;Yingxu Wang;Haoxuan Peng;Chengyan Zhong;Maolin Zhang;Yufeng Guo;Yu Liu","doi":"10.1109/LPT.2024.3483815","DOIUrl":"https://doi.org/10.1109/LPT.2024.3483815","url":null,"abstract":"Deep ultraviolet (DUV) photodetection typically struggles with significant noise and low contrast due to radiation and atmospheric interference. Integrating image enhancement and preprocessing functionalities often necessitates complex circuitry. To address these issues, this study introduces a \u0000<inline-formula> <tex-math>$beta $ </tex-math></inline-formula>\u0000-Ga2O3-based optoelectronic neuromorphic device utilizing pulsed light stimulation, designed to emulate brain-like integrated sensing and computing capabilities. By increasing the TEGa flow rate during the growth process, extra oxygen vacancies (V\u0000<inline-formula> <tex-math>$_{mathrm {o}}$ </tex-math></inline-formula>\u0000) were introduced into \u0000<inline-formula> <tex-math>$beta $ </tex-math></inline-formula>\u0000-Ga2O3, enabling the device to mimic critical biological synapse traits such as short-term plasticity and the learning-forgetting-relearning cycle, essential for dynamic data processing. These synaptic features allow the device to perform effective visual preprocessing, which significantly improves image recognition accuracy. Specifically, with added noise standard deviations of 0.2, 0.3, and 0.4, preprocessing resulted in recognition accuracy increases of 19.4%, 54.7%, and 161.7%, respectively. Importantly, the Vo-rich composition resulted in reduced photocurrent and ultra-low energy consumption (25 fJ) approaches of biological synapses. This device exhibits only 0.1% of the energy consuming compared to similar Ga2O3 synaptic devices through normalization comparison. These improvements highlight the device’s capability to significantly enhance DUV image quality and usability, offering valuable insights for the development of integrated sensing and computing Ga2O3 devices.","PeriodicalId":13065,"journal":{"name":"IEEE Photonics Technology Letters","volume":"36 23","pages":"1393-1396"},"PeriodicalIF":2.3,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142540430","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Low-Loss Silica Edge Coupler Based on Cascaded Gratings With Multiple Duty Ratios 基于多占空比级联光栅的低损耗二氧化硅边缘耦合器

IF 2.3 3区工程技术

IEEE Photonics Technology Letters Pub Date : 2024-10-21 DOI: 10.1109/LPT.2024.3483902

Manzhuo Wang;Jimin Fang;Tingyu Liu;Zhentao Yao;Chaoyang Sun;Xiaoqiang Sun;Yuanda Wu;Daming Zhang

引用次数: 0

Improvement of the Performance of 885 nm Laser Diodes by Using the High Al Component Barrier Layers 通过使用高铝成分阻挡层提高 885 nm 激光二极管的性能

IF 2.3 3区工程技术

IEEE Photonics Technology Letters Pub Date : 2024-10-21 DOI: 10.1109/LPT.2024.3483934

Renbo Han;Aiyi Qi;Hongwei Qu;Xuyan Zhou;Wanhua Zheng

引用次数: 0

Precise Temperature Prediction for Small-Sample Fiber Optic Spectra Based on Deep Learning 基于深度学习的小样本光纤光谱精确温度预测

IF 2.3 3区工程技术

IEEE Photonics Technology Letters Pub Date : 2024-10-18 DOI: 10.1109/LPT.2024.3483210

Yin Zhang;Jian Wang;Zhiyuan Xu;Peng Ren;Yuan Li-Bo

{"title":"Precise Temperature Prediction for Small-Sample Fiber Optic Spectra Based on Deep Learning","authors":"Yin Zhang;Jian Wang;Zhiyuan Xu;Peng Ren;Yuan Li-Bo","doi":"10.1109/LPT.2024.3483210","DOIUrl":"https://doi.org/10.1109/LPT.2024.3483210","url":null,"abstract":"This study addresses the issues of strong data dependency and limited prediction accuracy in temperature prediction using optical fiber spectroscopy technology by proposing a small-sample optical fiber spectroscopy-based temperature prediction method leveraging deep learning. This method aims to achieve high-precision temperature prediction with limited data samples through the powerful feature extraction and generalization capabilities of deep learning models. To achieve this goal, we first designed a precise experimental protocol to collect optical fiber spectroscopy data covering a temperature range from 30°C to 130°C, resulting in 84 high-quality data samples under controlled temperature variations. In the data processing stage, advanced signal processing techniques were employed to remove noise and outliers, and the data were normalized to ensure reliability and consistency. Subsequently, various models from the deep learning domain were utilized to train and learn from the processed spectroscopy data. By optimizing the model structures and parameters, we successfully established a nonlinear mapping relationship between spectroscopy and temperature. Experimental results demonstrate that compared to traditional methods, the deep learning model exhibits higher prediction accuracy and stronger robustness in spectroscopic temperature prediction, particularly under small-sample conditions. This study not only provides a novel and effective approach for spectroscopic temperature prediction with limited samples but also expands the application scope of deep learning in spectral analysis. Furthermore, this method holds broad application prospects in various fields such as industrial production, environmental monitoring, and biomedicine, promising to offer more precise and efficient solutions for temperature monitoring and control in related areas.","PeriodicalId":13065,"journal":{"name":"IEEE Photonics Technology Letters","volume":"36 24","pages":"1397-1400"},"PeriodicalIF":2.3,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142555098","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A 4 × 56-Gbaud PAM-4 Optical Receiver Integrated With SiGe-BiCMOS TIA 集成有 SiGe-BiCMOS TIA 的 4 × 56-Gbaud PAM-4 光接收器

IF 2.3 3区工程技术

IEEE Photonics Technology Letters Pub Date : 2024-10-17 DOI: 10.1109/LPT.2024.3482566

Wei Chen;Minhao Li;Ming Zhong;Yuan Li;Ying Wu;Pisen Zhou;Tao Xia;Patrick Yin Chiang

{"title":"A 4 × 56-Gbaud PAM-4 Optical Receiver Integrated With SiGe-BiCMOS TIA","authors":"Wei Chen;Minhao Li;Ming Zhong;Yuan Li;Ying Wu;Pisen Zhou;Tao Xia;Patrick Yin Chiang","doi":"10.1109/LPT.2024.3482566","DOIUrl":"https://doi.org/10.1109/LPT.2024.3482566","url":null,"abstract":"A chip-on-board (COB) packaged four-channel optical receiver integrated with a transimpedance amplifier (TIA) in 0.13-\u0000<inline-formula> <tex-math>$mu $ </tex-math></inline-formula>\u0000m SiGe-BiCMOS technology with fT/fMAX =260/350 GHz demonstrating 56-Gbaud four-level pulse-amplitude modulation (PAM-4) with low noise and high linearity is presented in support of optical receivers required in linear-drive pluggable optics (LPO) and beyond-400G optical links. The proposed four-stage optical receiver comprises an inductive shunt-feedback TIA followed by two variable gain amplifiers (VGAs) with a continuous-time linear equalizer (CTLE) function and a 50-ohm output buffer. The \u0000<inline-formula> <tex-math>$pi $ </tex-math></inline-formula>\u0000-topology L-C network and inductive shunt feedback techniques are used in TIA to meet the specifications of wide bandwidth (BW) and low noise. Two current-splitting VGA stages with CTLE function cascaded after TIA featuring high reliability can compensate for the loss of BW which caused by photo diode (PD) parasitic capacitance and provide a gain control range of −12dB ~ +18dB that accommodates input current up to 2mApp with low group delay variation. The 50-ohm output buffer with a T-coil and degeneration resistor achieves better output matching and high linearity. Measurement results show that TIA provides a maximum DC transimpedance gain (ZT) of 74 dB\u0000<inline-formula> <tex-math>$Omega $ </tex-math></inline-formula>\u0000 while O/E.BW is beyond 40 GHz, the 50-ohm output buffer offers 580-mV output swing and PAM-4 electrical eye diagrams up to 56-Gbaud of optical receiver with PRBS31Q. The optical receiver achieves a sensitivity of −9.7-dBm optical modulation amplitude (OMA) at pre-FEC BER limit of \u0000<inline-formula> <tex-math>$2.4times 10^{-4}$ </tex-math></inline-formula>\u0000 operating 56-Gbaud PAM-4 SSPRQ and consumes 720mW with a power supply of 3.3 V.","PeriodicalId":13065,"journal":{"name":"IEEE Photonics Technology Letters","volume":"36 24","pages":"1481-1484"},"PeriodicalIF":2.3,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142672132","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sub-kHz Linewidth Fiber Laser via Weak Fiber Bragg Grating Enabled Self-Injection Locking 通过弱光纤布拉格光栅实现自注入锁定的亚千赫线宽光纤激光器

IF 2.3 3区工程技术

IEEE Photonics Technology Letters Pub Date : 2024-10-16 DOI: 10.1109/LPT.2024.3482270

Meng Zou;Yuze Dai;Xiangpeng Xiao;Weiliang Zhao;Kai Shen;Weixi Li;Qizhen Sun;Luming Zhao;Chengbo Mou;Hai Liu;Zhijun Yan

{"title":"Sub-kHz Linewidth Fiber Laser via Weak Fiber Bragg Grating Enabled Self-Injection Locking","authors":"Meng Zou;Yuze Dai;Xiangpeng Xiao;Weiliang Zhao;Kai Shen;Weixi Li;Qizhen Sun;Luming Zhao;Chengbo Mou;Hai Liu;Zhijun Yan","doi":"10.1109/LPT.2024.3482270","DOIUrl":"https://doi.org/10.1109/LPT.2024.3482270","url":null,"abstract":"We proposed a compact self-injection locked fiber laser, employing a weak fiber Bragg grating (wFBG) to achieve external feedback linewidth compression. The simulated results indicated that the output laser linewidth decreased with the increase of the length of the wFBG. According to the experimental results, the output laser linewidth was compressed to 300 Hz with an 8-mm long wFBG. However, a further increase in the length of the wFBG led to linewidth broadening, which can be attributed to the enhanced interference between the main cavity and wFBG. Additionally, the corresponding phase noise was suppressed by approximately 20 dB within the frequency range of 0 Hz - 100 Hz, and the relative intensity noise decreased to -123 dB/Hz. Furthermore, the amplitude of beat frequency fluctuated within 20 MHz over 1000-second period, and the output power exhibited fluctuations of less than 1% over a 7-hour period under laboratory conditions. Ideally, the compact fiber laser design will facilitate the miniaturization of sub-kHz-linewidth fiber lasers.","PeriodicalId":13065,"journal":{"name":"IEEE Photonics Technology Letters","volume":"36 24","pages":"1405-1408"},"PeriodicalIF":2.3,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142555108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Impact of Oxide Aperture on the Static and Dynamic Performance of 850-nm VCSELs 氧化物孔径对 850 纳米 VCSEL 静态和动态性能的影响

IF 2.3 3区工程技术

IEEE Photonics Technology Letters Pub Date : 2024-10-16 DOI: 10.1109/LPT.2024.3481471

ShanShan Du;JinBao Su;HengJie Zhou;Huan Zhang;PingPing Qiu;Jun Deng;Qiang Kan;YiYang Xie

{"title":"Impact of Oxide Aperture on the Static and Dynamic Performance of 850-nm VCSELs","authors":"ShanShan Du;JinBao Su;HengJie Zhou;Huan Zhang;PingPing Qiu;Jun Deng;Qiang Kan;YiYang Xie","doi":"10.1109/LPT.2024.3481471","DOIUrl":"https://doi.org/10.1109/LPT.2024.3481471","url":null,"abstract":"We fabricate 850-nm vertical-cavity surface-emitting lasers (VCSELs) with oxide-aperture diameters of 5, 7, 9 and \u0000<inline-formula> <tex-math>$11~mu $ </tex-math></inline-formula>\u0000m and study the effect of oxide-aperture size on the threshold current, output power, differential quantum efficiency and wall-plug efficiency of the devices. We characterize the small-signal modulation bandwidth (\u0000<inline-formula> <tex-math>${f} _{3dB}$ </tex-math></inline-formula>\u0000) of the devices and explore the impact of oxide-aperture size and bias current on the modulation bandwidth. We analyze the relationship between electrical power and the \u0000<inline-formula> <tex-math>${f} _{3dB}$ </tex-math></inline-formula>\u0000 of the VCSELs with different aperture diameters. The fabricated 850-nm VCSEL with the oxide-aperture diameter of \u0000<inline-formula> <tex-math>$7~mu $ </tex-math></inline-formula>\u0000m at room temperature shows a maximum \u0000<inline-formula> <tex-math>${f} _{3dB}$ </tex-math></inline-formula>\u0000 of nearly 20 GHz and an output power of 9.09 mW. When the oxide-aperture increases to \u0000<inline-formula> <tex-math>$11~mu $ </tex-math></inline-formula>\u0000m, the \u0000<inline-formula> <tex-math>${f} _{3dB}$ </tex-math></inline-formula>\u0000 remains above 17 GHz and the optical output power exceeds 14 mW.","PeriodicalId":13065,"journal":{"name":"IEEE Photonics Technology Letters","volume":"36 24","pages":"1453-1456"},"PeriodicalIF":2.3,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142595121","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Highly Sensitive Optical Fiber Humidity Sensor Employing SiO2 Coated ZnO Nanoparticle Doped PVA 采用二氧化硅涂层氧化锌纳米粒子掺杂 PVA 的高灵敏度光纤湿度传感器

IF 2.3 3区工程技术

IEEE Photonics Technology Letters Pub Date : 2024-10-14 DOI: 10.1109/LPT.2024.3480313

Manish Singh Negi;Sunil Mohan

引用次数: 0

Rayleigh Backscattering Analysis in POFs for High Spatial Resolution Distributed Sensing 用于高空间分辨率分布式传感的 POF 中的瑞利反向散射分析

IF 2.3 3区工程技术

IEEE Photonics Technology Letters Pub Date : 2024-10-14 DOI: 10.1109/LPT.2024.3480790

Arnaldo Leal-Junior;Mariana Silveira;Carlos Marques

引用次数: 0