IEEE Photonics Technology Letters最新文献_第10页

Aluminum Oxide 50/50 Splitter Based on Multimode Interferometer for the Blue/Near-UV Spectral Range 基于多模干涉仪的氧化铝50/50分光器用于蓝/近紫外光谱范围

IF 2.3 3区工程技术

IEEE Photonics Technology Letters Pub Date : 2025-04-24 DOI: 10.1109/LPT.2025.3562902

Ronan Kervazo;Georges Perin;Stéphane Trebaol;Loïc Bodiou;Joël Charrier

引用次数: 0

High-Birefringence and Quarter-Wave Plates at 1550 nm Using Azopolymers 使用偶氮聚合物的1550nm高双折射和四分之一波片

IF 2.3 3区工程技术

IEEE Photonics Technology Letters Pub Date : 2025-04-24 DOI: 10.1109/LPT.2025.3564052

Beatriz Soares;Susana Silva;Paulo Ribeiro;Orlando Frazão

{"title":"High-Birefringence and Quarter-Wave Plates at 1550 nm Using Azopolymers","authors":"Beatriz Soares;Susana Silva;Paulo Ribeiro;Orlando Frazão","doi":"10.1109/LPT.2025.3564052","DOIUrl":"https://doi.org/10.1109/LPT.2025.3564052","url":null,"abstract":"Azobenzenes are a class of compounds which allow the writing and erasure of linear birefringence along any desired direction, through their ability to photoisomerize. This property enables applications requiring polarization control, which, despite extensive exploration in the visible spectrum, have yet to be fully capitalized in the infrared region. This study aims to systematically characterize the creation and relaxation of induced linear birefringence dynamics in azopolymers thin films for the 1550 nm region. Maximum birefringence values as high as <inline-formula> <tex-math>$6.02times 10^{-2}$ </tex-math></inline-formula> were attained during the recording phase with a 445 nm pump laser, that stabilized at <inline-formula> <tex-math>$5.40times 10^{-2}$ </tex-math></inline-formula> during the relaxation phase, achieved for a <inline-formula> <tex-math>$2.4~mu m$ </tex-math></inline-formula> sample. In addition, a maximum phase shift of <inline-formula> <tex-math>$Delta Phi = 0.54pi $ </tex-math></inline-formula> stabilizing at <inline-formula> <tex-math>$Delta Phi = 0.50pi $ </tex-math></inline-formula>, was observed for a <inline-formula> <tex-math>$9.7~mu m$ </tex-math></inline-formula> sample with a 532 nm writing laser. Accordingly, this shows the promising potential of azopolymers for many applications.","PeriodicalId":13065,"journal":{"name":"IEEE Photonics Technology Letters","volume":"37 15","pages":"825-828"},"PeriodicalIF":2.3,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144117202","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

An Eight-Channel Hybrid Wavelength-/Mode-Division (De)multiplexer Based on LNOI Platform 基于LNOI平台的八通道混合波长/模分（De）多路复用器

IF 2.3 3区工程技术

IEEE Photonics Technology Letters Pub Date : 2025-04-23 DOI: 10.1109/LPT.2025.3563510

Qian Ma;Wanghua Zhu;Qichao Wang;Enze Zhou;Yaohui Sun;Guohua Hu;Binfeng Yun;Liguo Shuai;Yiping Cui

{"title":"An Eight-Channel Hybrid Wavelength-/Mode-Division (De)multiplexer Based on LNOI Platform","authors":"Qian Ma;Wanghua Zhu;Qichao Wang;Enze Zhou;Yaohui Sun;Guohua Hu;Binfeng Yun;Liguo Shuai;Yiping Cui","doi":"10.1109/LPT.2025.3563510","DOIUrl":"https://doi.org/10.1109/LPT.2025.3563510","url":null,"abstract":"Multi-dimensional multiplexing technology is pivotal for enhancing on-chip communication capacity. In this letter, we proposed and fabricated an 8-channel hybrid (de)multiplexer chip based on a lithium niobate on insulator (LNOI) platform, which can simultaneously implement mode-division multiplexing (MDM) and wavelength-division multiplexing (WDM). The proposed (de)multiplexer comprises a two-channel mode (de)multiplexer utilizing an asymmetric directional coupler (ADC) and a four-channel WDM (de)multiplexer employing a set of second-order microring resonator (MRR) arrays. To further increase the number of channels, the two ports of the mode demultiplexer are interconnected, thereby doubling the communication capacity while maintaining the same number of MRRs. Experimental results demonstrate that the device achieves intermode crosstalk below −10 dB with a multiplexing bandwidth of exceeding 50 nm. The adjacent channel crosstalk and the non-adjacent channel crosstalk of the multiplexer’s eight channels are below −13 dB and −27 dB, respectively, over a free spectral range (FSR) from 1556 to 1562 nm. This research paves new avenues in the field of multi-dimensional multiplexing techniques on the LNOI platform.","PeriodicalId":13065,"journal":{"name":"IEEE Photonics Technology Letters","volume":"37 13","pages":"741-744"},"PeriodicalIF":2.3,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144117198","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

FL-Based NN in 30.4-km MMW Transmission Using Full-Photonic Conversion and TWT Amplifier 全光子转换和行波管放大器在30.4 km毫米波传输中基于fl的神经网络

IF 2.3 3区工程技术

IEEE Photonics Technology Letters Pub Date : 2025-04-23 DOI: 10.1109/LPT.2025.3563485

Junhao Zhao;Boyu Dong;Yinjun Liu;Dianyuan Ping;Li Tao;Shuhong He;Shishuo Liu;Zhangxiong Zi;Qichao Lu;Yaxuan Li;Junlian Jia;Zhongya Li;An Yan;Jianyang Shi;Nan Chi;Junwen Zhang

{"title":"FL-Based NN in 30.4-km MMW Transmission Using Full-Photonic Conversion and TWT Amplifier","authors":"Junhao Zhao;Boyu Dong;Yinjun Liu;Dianyuan Ping;Li Tao;Shuhong He;Shishuo Liu;Zhangxiong Zi;Qichao Lu;Yaxuan Li;Junlian Jia;Zhongya Li;An Yan;Jianyang Shi;Nan Chi;Junwen Zhang","doi":"10.1109/LPT.2025.3563485","DOIUrl":"https://doi.org/10.1109/LPT.2025.3563485","url":null,"abstract":"This letter presents a focal loss (FL)-based neural network soft de-mapping method for 30.4-km millimeter-wave (MMW) transmission, utilizing full-photonic up- and down-conversion. A traveling wave tube (TWT) is employed to improve power budget to realize over 50-km equivalent distance. The proposed method is shown to effectively reduce the bit error rate (BER) in MMW transmission, particularly when the model parameters are small, highlighting its potential to lower complexity of receiver. The performance of the FL function is validated using convolutional neural networks (CNN), recurrent neural networks (RNN), and residual networks (ResNet) architectures, all of which lead to a significant reduction in BER, with ResNet achieving the best results. The field trial of 30.4-km MMW transmission and targeted over 50.0-km equivalent distance have been demonstrated successfully. Notably, a 10.43-Gb/s line rate is achieved over the 30.4-km near-sea surface wireless link at 0-dBm received optical power (ROP) of transmitter photodiode.","PeriodicalId":13065,"journal":{"name":"IEEE Photonics Technology Letters","volume":"37 14","pages":"777-780"},"PeriodicalIF":2.3,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144117219","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

Tunable Opto-Chemical Virtual Aperture Induced by Azobenzene Cis-Trans Isomerization 偶氮苯顺反异构化诱导的可调光化学虚拟孔径

IF 2.3 3区工程技术

IEEE Photonics Technology Letters Pub Date : 2025-04-23 DOI: 10.1109/LPT.2025.3563501

Yixuan Chen;Xi Xie;Changjun Min;Yuquan Zhang;Xiaocong Yuan

引用次数: 0

Advancements in Visible Reflection Coatings: Thin Films for Photonic and Optoelectronic Applications 可见光反射涂层的研究进展：光子与光电应用薄膜

IF 2.3 3区工程技术

IEEE Photonics Technology Letters Pub Date : 2025-04-22 DOI: 10.1109/LPT.2025.3563312

Venkatesh Yepuri;Matte Rajayya

{"title":"Advancements in Visible Reflection Coatings: Thin Films for Photonic and Optoelectronic Applications","authors":"Venkatesh Yepuri;Matte Rajayya","doi":"10.1109/LPT.2025.3563312","DOIUrl":"https://doi.org/10.1109/LPT.2025.3563312","url":null,"abstract":"TiO2/SiO2 multilayer structures, have demonstrated reflectance exceeding 90% in the visible spectrum (500–600nm) and a contact angle of 45°, indicating strong hydrophilic self-cleaning properties. These coatings exhibit well-defined multilayers, with precise thickness control (~100–120 nm TiO2, ~80–100 nm SiO2), enhancing constructive interference and Bragg reflection for improved optical efficiency. XRD analysis confirmed the anatase phase of TiO2, optimizing crystallinity and mechanical stability, while FTIR spectroscopy validated Si-O-Ti bonding, ensuring strong interfacial adhesion. These properties make the coatings highly effective for integration into silicon photonics, waveguides, and optoelectronic devices, reducing optical losses and improving energy efficiency. Their application spans next-generation augmented reality displays, self-cleaning solar panels, high-efficiency dielectric mirrors, and low-loss reflectors for photonic circuits. With their potential for scalable manufacturing and enhanced durability, these coatings represent a significant advancement in energy-efficient optical systems, paving the way for more sustainable and high-performance photonic technologies.","PeriodicalId":13065,"journal":{"name":"IEEE Photonics Technology Letters","volume":"37 13","pages":"729-732"},"PeriodicalIF":2.3,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144117210","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

Liquid-Filled Multicore Elastic Optical Waveguide for Multi-Point Bending Sensing 用于多点弯曲传感的充液多芯弹性光波导

IF 2.3 3区工程技术

IEEE Photonics Technology Letters Pub Date : 2025-04-22 DOI: 10.1109/LPT.2025.3563378

Xi Luo;Daifu Zheng;Shimeng Chen;Yun Liu;Wei Peng

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BERT-Based Modeling Method for Long-Distance PDM Transmission Channel 基于bert的远距离PDM传输信道建模方法

IF 2.3 3区工程技术

IEEE Photonics Technology Letters Pub Date : 2025-04-22 DOI: 10.1109/LPT.2025.3563213

Wenhou Luo;Lianshan Yan;Yue Zhu;Jia Ye;Wei Pan;Xihua Zou

引用次数: 0

An Enhanced Transfer Learning-Based Automatic Modulation Recognition Method for OFDM-VLC System 基于迁移学习的OFDM-VLC系统调制自动识别方法

IF 2.3 3区工程技术

IEEE Photonics Technology Letters Pub Date : 2025-04-22 DOI: 10.1109/LPT.2025.3563388

Hong Wen;Zixiong Gao;Qinghui Chen;Jun Zhou

引用次数: 0

Compact Q-Switched Oscillator With Combined Nanosecond and Microsecond Pulse Outputs 结合纳秒和微秒脉冲输出的紧凑型q开关振荡器

IF 2.3 3区工程技术

IEEE Photonics Technology Letters Pub Date : 2025-04-22 DOI: 10.1109/LPT.2025.3563194

Qian Ti;Wen-Quan Nie;Da-Fu Cui;Qi Bian;Nan Zong;Yong Bo;Qin-Jun Peng

{"title":"Compact Q-Switched Oscillator With Combined Nanosecond and Microsecond Pulse Outputs","authors":"Qian Ti;Wen-Quan Nie;Da-Fu Cui;Qi Bian;Nan Zong;Yong Bo;Qin-Jun Peng","doi":"10.1109/LPT.2025.3563194","DOIUrl":"https://doi.org/10.1109/LPT.2025.3563194","url":null,"abstract":"We have developed a laser-diode side-pumped Q-switched Nd:YAG laser capable of generating combined pulses, consisting of high-peak-power nanosecond (ns) and microsecond (<inline-formula> <tex-math>$mu $ </tex-math></inline-formula>s) pulses. In free-running mode, a maximum output power of 22.1 W was achieved at a 1 kHz repetition rate with a pulse duration of <inline-formula> <tex-math>$115~mu $ </tex-math></inline-formula>s. By carefully adjusting the Q-switch trigger delay and the Q-switch opening time, a combined macro-pulse consisting of a single ns pulse and a <inline-formula> <tex-math>$mu $ </tex-math></inline-formula>s pulse train was generated, where the ns pulse power ratio relative to the total combined pulse power can be adjusted from 45% to nearly 100%. The peak power of the ns pulse increases from 83 kW to 396.4 kW, while the peak power of the <inline-formula> <tex-math>$mu $ </tex-math></inline-formula>s pulse decreases from 143.2 W to 87.5W, corresponding to intensities of up to GW/cm2 and MW/cm2, respectively. The micro-pulse programmable Q-switched regime is well useful to extend the potential applications of the combined pulse laser, particularly in laser beam drilling.","PeriodicalId":13065,"journal":{"name":"IEEE Photonics Technology Letters","volume":"37 14","pages":"745-748"},"PeriodicalIF":2.3,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144117214","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