IEEE Photonics Technology Letters最新文献_第4页

kHz-Resolution Frequency Measurement Based on Selective High-Order Modes in a Micro-Resonator 基于微谐振腔中选择性高阶模式的khz分辨率频率测量

IF 2.3 3区工程技术

IEEE Photonics Technology Letters Pub Date : 2025-06-17 DOI: 10.1109/LPT.2025.3580637

Yuwei Jian;Wufei Zhou;Wenping Zhong;Jinxin Li;Ruiqi Zheng;Jingxu Chen;Lingzhi Li;Jiejun Zhang;Jianping Yao

{"title":"kHz-Resolution Frequency Measurement Based on Selective High-Order Modes in a Micro-Resonator","authors":"Yuwei Jian;Wufei Zhou;Wenping Zhong;Jinxin Li;Ruiqi Zheng;Jingxu Chen;Lingzhi Li;Jiejun Zhang;Jianping Yao","doi":"10.1109/LPT.2025.3580637","DOIUrl":"https://doi.org/10.1109/LPT.2025.3580637","url":null,"abstract":"We propose a photonic microwave frequency measurement system with kHz resolution for the instantaneous measurement of the Doppler frequency shift (DFS)of a moving object. By joint use of an optical frequency comb (OFC) generator implemented by cascading an intensity modulator (IM) and a phase modulator (PM) and a high-Q metal-coated micro-disk resonator (MDR), an ultra-sensitive amplitude comparison function (ACF) for frequency-to-power mapping is established, which enables ultra-high sensitivity frequency measurement. The proposed technique is experimentally demonstrated. A Doppler signal is applied to the two modulators to generate multiple sidebands corresponding to an optical comb. By aligning the ±3-rd order sidebands with the steep slopes of two adjacent notches of the metal-coated MDR, an ACF is obtained. A frequency measurement sensitivity of 2.28 dB/MHz is experimentally achieved. With a power measurement resolution of 0.01 dB, the frequency measurement resolution is 4.37 kHz, which is the highest ever reported based on photonic techniques. It enables Doppler frequency shift measurement for an object moving at speeds between 40.34 to 1384 m/s.","PeriodicalId":13065,"journal":{"name":"IEEE Photonics Technology Letters","volume":"37 18","pages":"1037-1040"},"PeriodicalIF":2.3,"publicationDate":"2025-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144481890","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

Bidirectional 100G/150G Amplified Transmission With a QD-SOA for Future Passive Optical Networks 面向未来无源光网络的QD-SOA双向100G/150G放大传输

IF 2.3 3区工程技术

IEEE Photonics Technology Letters Pub Date : 2025-06-16 DOI: 10.1109/LPT.2025.3580280

Ahmed Galib Reza;Lakshmi Narayanan Venkatasubramani;Vladimir S. Mikhrin;Alexey Gubenko;Liam P. Barry

引用次数: 0

High-Responsivity Semimetal Terahertz Detectors Based on Localized Surface Plasmon Resonance Effect 基于局域表面等离子体共振效应的高响应半金属太赫兹探测器

IF 2.3 3区工程技术

IEEE Photonics Technology Letters Pub Date : 2025-06-16 DOI: 10.1109/LPT.2025.3579884

Rui Su;Chenwei Zhang;Binbin Hong;Faxian Xiu;Mingjun Xia

引用次数: 0

Emitter-Resolved Characterization of High-Power Diode Laser Bars at Operating Point and Below Threshold 大功率二极管激光棒在工作点和阈值以下的发射分辨特性

IF 2.3 3区工程技术

IEEE Photonics Technology Letters Pub Date : 2025-06-16 DOI: 10.1109/LPT.2025.3579859

Bastian Dommermuth;Ulrich Witte;Anne Balck;Michael Bay

{"title":"Emitter-Resolved Characterization of High-Power Diode Laser Bars at Operating Point and Below Threshold","authors":"Bastian Dommermuth;Ulrich Witte;Anne Balck;Michael Bay","doi":"10.1109/LPT.2025.3579859","DOIUrl":"https://doi.org/10.1109/LPT.2025.3579859","url":null,"abstract":"In this letter, we report on a novel measurement setup for emitter resolved characterization of polarization, optical output power, wavelength, and slow-axis intensity distribution of high-power diode laser bars. Our setup enables the emitter-resolved characterization in a range starting from below the laser threshold reaching up to several 100 amps correlating to operating power of the state-of-the-art generation of diode laser bars, which possess a power output of several 100 watts. In contrast to previous works, the properties are determined directly from the laser radiation during operation, which enables us to directly correlate the emitter-resolved power and polarization distribution. In addition to the reduction in degree of polarization towards the edge emitters, we demonstrate a disparity in power distribution among the edge emitters at operating output power in comparison to operation below the laser threshold. To distinguish between thermal and stress-induced effects, we operate the diode laser bar both in cw- and pulsed mode. Furthermore, we demonstrate how the effects of mechanical stress on the performance and degree of polarization of the edge emitters at operating power are identified.","PeriodicalId":13065,"journal":{"name":"IEEE Photonics Technology Letters","volume":"37 18","pages":"1045-1048"},"PeriodicalIF":2.3,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144519330","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

Single Pixel Optical Encryption in Atmospheric Turbulence 大气湍流中的单像素光学加密

IF 2.3 3区工程技术

IEEE Photonics Technology Letters Pub Date : 2025-06-13 DOI: 10.1109/LPT.2025.3579541

Yin Cheng;Jun Ke;Yusen Liao

引用次数: 0

High-Sensitivity Strain Sensor Using Chaotic Correlation FLRD With Weak Fiber Bragg Grating 基于弱光纤光栅的混沌相关FLRD高灵敏度应变传感器

IF 2.3 3区工程技术

IEEE Photonics Technology Letters Pub Date : 2025-06-13 DOI: 10.1109/LPT.2025.3579495

Xiaomin Fu;Weijie Ding;Linlin Fan;Ruixin Yang;Juanfen Wang;Yuxin Bai;Lingzhen Yang

{"title":"High-Sensitivity Strain Sensor Using Chaotic Correlation FLRD With Weak Fiber Bragg Grating","authors":"Xiaomin Fu;Weijie Ding;Linlin Fan;Ruixin Yang;Juanfen Wang;Yuxin Bai;Lingzhen Yang","doi":"10.1109/LPT.2025.3579495","DOIUrl":"https://doi.org/10.1109/LPT.2025.3579495","url":null,"abstract":"A weak fiber Bragg grating is used as the sensing element. The relationship between the ring down time of autocorrelation curves of the chaotic laser and the wavelength shift of the FBG caused by strain is analyzed theoretically and experimentally. The effect of strain on the central wavelength of the FBG is characterized by the ring down time of autocorrelation curve of the reflected and transmitted signals of the fiber loop cavity. The reflected signal achieves a maximal sensitivity of 0.67731 ns/<inline-formula> <tex-math>$mu varepsilon $ </tex-math></inline-formula> in the 0-<inline-formula> <tex-math>$100mu varepsilon $ </tex-math></inline-formula> and 500-<inline-formula> <tex-math>$600mu varepsilon $ </tex-math></inline-formula> ranges, where spectral interaction is weak, while the transmitted signal provides a maximal sensitivity of 0.1093 ns/<inline-formula> <tex-math>$mu varepsilon $ </tex-math></inline-formula> in the 100-<inline-formula> <tex-math>$500mu varepsilon $ </tex-math></inline-formula> range. With an 8.2 m fiber loop cavity, this dual-signal method significantly extends the measurement range while maintaining high sensitivity throughout the detection range.","PeriodicalId":13065,"journal":{"name":"IEEE Photonics Technology Letters","volume":"37 18","pages":"1065-1068"},"PeriodicalIF":2.3,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144519327","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

Visible Light Positioning Using a Single LED and a Single Rotatable Photodetector 使用单个LED和单个可旋转光电探测器进行可见光定位

IF 2.3 3区工程技术

IEEE Photonics Technology Letters Pub Date : 2025-06-12 DOI: 10.1109/LPT.2025.3578979

Hanyang Shi;Caiyi Wang;Yan Zhao

引用次数: 0

Quantum Dot-Based Visible Light Communication System for Microalgal Density Analysis 基于量子点的可见光通信微藻密度分析系统

IF 2.3 3区工程技术

IEEE Photonics Technology Letters Pub Date : 2025-06-11 DOI: 10.1109/LPT.2025.3578611

Hua Xiao;Mingxin Liu;Kishwar Khan;Wensong Wang;Caiming Sun

引用次数: 0

High-Order Modes Assisted Ultra-Long Silicon Multimode Waveguide Grating Antennas 高阶模辅助超长硅多模波导光栅天线

IF 2.3 3区工程技术

IEEE Photonics Technology Letters Pub Date : 2025-06-11 DOI: 10.1109/LPT.2025.3578641

Zhipeng Ma;Kang Li;Yu Zhang;Jian Wang

引用次数: 0

High-Resolution Prism/(TiO2/SiO2)3/MoSe2 Bloch Surface Wave Biosensor Based on Bragg Structure 基于Bragg结构的高分辨率Prism/(TiO2/SiO2)3/MoSe2 Bloch表面波生物传感器

IF 2.3 3区工程技术

IEEE Photonics Technology Letters Pub Date : 2025-06-11 DOI: 10.1109/LPT.2025.3578543

Moamen Shahbazi;Keyhan Hosseini;Mohammad Razaghi

{"title":"High-Resolution Prism/(TiO2/SiO2)3/MoSe2 Bloch Surface Wave Biosensor Based on Bragg Structure","authors":"Moamen Shahbazi;Keyhan Hosseini;Mohammad Razaghi","doi":"10.1109/LPT.2025.3578543","DOIUrl":"https://doi.org/10.1109/LPT.2025.3578543","url":null,"abstract":"A dielectric Bragg structure is utilized based on a one-dimensional photonic crystal of alternating TiO2/SiO2 layers as a sensor. MoSe2 termination layer is exploited to excite a Bloch surface wave (BSW) at its interface with the analyte. The light source excites the biosensor through a MgF2 prism at a wavelength of 1100 nm. The proposed biosensor operates based on the variation of the resonance angle due to changes in the refractive index of the biological material, i.e. from 1.33 to 1.34. For ten MoSe2 monolayers, the detection sensitivity is obtained as 287 (°/RIU) with a linear regression coefficient of 0.9953. Correspondingly, the maximum and average values of the figure of merit (FoM) amount to 7316 and 6913(1/RIU), respectively. By decreasing the number of monolayers, the linearity improves and the FoM increases remarkably at the cost of a reduction in the average sensitivity. Such large FoMs provide ultra-high resolutions to distinguish between analytes with very close refractive indices. This is useful in detecting slight changes in the cell concentrations within a host medium. No grating is used in the proposed sensor, which simplifies the fabrication process.","PeriodicalId":13065,"journal":{"name":"IEEE Photonics Technology Letters","volume":"37 17","pages":"985-988"},"PeriodicalIF":2.3,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144481925","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