Optics letters最新文献_第8页

Generation of high-repetition-rate, high-power, few-cycle, 2-µm laser pulses with a single-stage all-fiber nonlinear compressor. 利用单级全光纤非线性压缩器产生高重复率、高功率、少周期、2µm激光脉冲。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-06-15 DOI: 10.1364/OL.562939

Zhen Yuan, Kejian Yang, Yang Li, Jingjie Hao, Heyan Liu, Zhongben Pan, Jinwei Zhang, Yizhou Liu, Tianli Feng

引用次数: 0

High system efficiency nonlinear frequency conversion on thin-film lithium niobate. 铌酸锂薄膜的高效率非线性变频。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-06-15 DOI: 10.1364/OL.561750

Philipp Lohmann, Daniel Wendland, Francesco Lenzini, Wolfram H P Pernice

引用次数: 0

High-order mode suppression in a high-Q disk resonator with metal patterning. 金属图形高q盘谐振器的高阶模抑制。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-06-15 DOI: 10.1364/OL.563012

Wenping Zhong, Wufei Zhou, Junkai Zhang, Ruiqi Zheng, Jianghai Wo, Jianming Zhou, Kun Zhang, Yanyan Zhi, Jiejun Zhang, Jianping Yao

{"title":"High-order mode suppression in a high-Q disk resonator with metal patterning.","authors":"Wenping Zhong, Wufei Zhou, Junkai Zhang, Ruiqi Zheng, Jianghai Wo, Jianming Zhou, Kun Zhang, Yanyan Zhi, Jiejun Zhang, Jianping Yao","doi":"10.1364/OL.563012","DOIUrl":"https://doi.org/10.1364/OL.563012","url":null,"abstract":"High-quality (Q) resonators are essential for efficient light confinement and manipulation in silicon photonics. Conventional microring resonators (MRRs) and microdisk resonators (MDRs) face challenges, such as high losses due to sidewall roughness in MRRs or interference from excessively high-order modes in MDRs. To overcome these challenges, we propose a novel, to the best of our knowledge, MDR design that integrates a patterned nickel (Ni) metal layer on top of a conventional MDR. This metal layer leverages the optical absorption properties of metal to selectively suppress high-order modes, resulting in a microresonator with a high-Q factor comparable to a conventional MDR and simultaneously a clean spectral response similar to that of a conventional MRR. Experimental results show that the patterned MDR with a radius of 20 μm achieves a maximum extinction ratio of 31 dB and a Q factor of 1.5 × 105, which is two orders of magnitude higher than the Q factor of an MRR of identical size fabricated using the same process. This novel MDR design combines a high-Q factor with a clean spectral response, offering significant potential for applications that require high-Q resonators in chip-scale photonic systems.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 12","pages":"3978-3981"},"PeriodicalIF":3.1,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144289545","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hybrid digital-analog beamforming architecture for rapid beam steering based on microwave photonics. 基于微波光子学的快速波束导向混合数模波束形成结构。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-06-15 DOI: 10.1364/OL.561016

Yufei Fu, Jiazhen Cai, Jingcan Ma, Wenxin Guo, Tingrui Qi, Xinlu Gao, Lei Zhang, Zhennan Zheng, Shanguo Huang

引用次数: 0

Multi-wavelength applicable waveguide vortex beam generator in lithium niobate processed by femtosecond laser direct writing. 飞秒激光直写加工铌酸锂多波长波导涡束发生器。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-06-15 DOI: 10.1364/OL.562226

Boning Pang, Siwen Ai, Menghan Yu, Shihan Ding, Xiaokang Yang, Hongliang Liu

{"title":"Multi-wavelength applicable waveguide vortex beam generator in lithium niobate processed by femtosecond laser direct writing.","authors":"Boning Pang, Siwen Ai, Menghan Yu, Shihan Ding, Xiaokang Yang, Hongliang Liu","doi":"10.1364/OL.562226","DOIUrl":"https://doi.org/10.1364/OL.562226","url":null,"abstract":"In this Letter, we report a micrometer-scale customized guiding device designed for generating vortex beams in lithium niobate (LN) crystals processed by femtosecond laser direct writing (FLDW) technology. Confocal-Raman microscope measurements were skillfully utilized to thoroughly clarify the microscopic mechanisms involved in the laser-induced alteration of the crystal lattice and the formation of various waveguide types. Finite-difference time-domain (FDTD) simulations confirm that the designed array of stable-optimized Type-I waveguides with stepped length gradients demonstrates selective orbital angular momentum (OAM) excitation under multi-wavelength illumination and the wavelength-OAM correlation governed by the waveguide length-dependent phase accumulation mechanism. The wavelength-dependent vortex generation was experimentally characterized using an end-coupled interrogation setup with continuous laser sources at 1064 nm and 532 nm, verifying the structural response to wavelength variations. Our results vividly demonstrate that the multi-waveguide hybrid structure within lithium niobate crystals has remarkable potential for applications in vortex beam generators functioning at different wavelengths.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 12","pages":"3974-3977"},"PeriodicalIF":3.1,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144289560","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pure-quartic domain-wall solitons as topological bits for data transmission. 纯四次畴壁孤子作为数据传输的拓扑位元。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-06-15 DOI: 10.1364/OL.563984

Pengfei Li, Jun Ruan, Shilong Liu, Dumitru Mihalache, Boris A Malomed

引用次数: 0

Self-adaptive hybrid data-model optimization for secure end-to-end radio-over-fiber transmission. 安全端到端光纤无线传输的自适应混合数据模型优化。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-06-15 DOI: 10.1364/OL.566422

Yue Zhu, Jia Ye, Lianshan Yan, Xiao Yu, Xihua Zou, Wei Pan

引用次数: 0

Ultra-compact hybrid multimode division multiplexer based on a photonic crystal nanobeam. 基于光子晶体纳米束的超紧凑混合多模分复用器。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-06-15 DOI: 10.1364/OL.551237

Enze Zhou, Qichao Wang, Yaohui Sun, Dongyu Wang, Wanghua Zhu, Guohua Hu, Binfeng Yun, Yiping Cui

{"title":"Ultra-compact hybrid multimode division multiplexer based on a photonic crystal nanobeam.","authors":"Enze Zhou, Qichao Wang, Yaohui Sun, Dongyu Wang, Wanghua Zhu, Guohua Hu, Binfeng Yun, Yiping Cui","doi":"10.1364/OL.551237","DOIUrl":"https://doi.org/10.1364/OL.551237","url":null,"abstract":"In this Letter, we propose and fabricate an ultra-compact hybrid four-mode multiplexer based on a photonic crystal nanobeam to enhance the integration of on-chip multidimensional multiplexing systems. By introducing the nanobeam into the system, mode conversion can be achieved synchronously during reflection, eliminating the need for a dedicated mode converter and enabling higher chip integration. Besides, subwavelength gratings and tapered waveguides are gradually introduced to further reduce the length of the coupling region. As a result, the proposed tapered-waveguide-assisted ultra-compact hybrid four-mode multiplexer has a coupling region length of only 1.625 μm, and the minimum feature size is 130 nm. Experimental results demonstrate that this device exhibits an insertion loss less than 3.66 dB and cross talk better than -13 dB within a bandwidth of 60 nm. Attributed to its compact structure and low lithography precision requirements, the proposed device will undoubtedly contribute to achieving high integration of on-chip multidimensional multiplexing systems.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 12","pages":"3800-3803"},"PeriodicalIF":3.1,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144289586","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ultrasensitive fiber-optic Vernier salinometer based on an integrated dual-microcavity interferometer. 基于集成双微腔干涉仪的超灵敏光纤游标盐度计。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-06-15 DOI: 10.1364/OL.564714

Yue Yu, Chuanxu Liu, Liangtao Hou, Jiuru Yang

引用次数: 0

Demonstration of reconfigurable and tunable all-optical matrix-vector multiplication using nonlinear wave mixing. 使用非线性波混频的可重构和可调谐全光矩阵矢量乘法的演示。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-06-15 DOI: 10.1364/OL.563017

Wing Ko, Abdulrahman Alhaddad, Amir Minoofar, Hongkun Lian, Huibin Zhou, Muralekrishnan Ramakrishnan, Zile Jiang, Xinzhou Su, Moshe Tur, Jonathan L Habif, Alan E Willner

{"title":"Demonstration of reconfigurable and tunable all-optical matrix-vector multiplication using nonlinear wave mixing.","authors":"Wing Ko, Abdulrahman Alhaddad, Amir Minoofar, Hongkun Lian, Huibin Zhou, Muralekrishnan Ramakrishnan, Zile Jiang, Xinzhou Su, Moshe Tur, Jonathan L Habif, Alan E Willner","doi":"10.1364/OL.563017","DOIUrl":"https://doi.org/10.1364/OL.563017","url":null,"abstract":"Recent interest has grown in processing matrix operations within the optical domain due to its potential advantages in bandwidth, latency, and parallelism. While optical implementations of matrix-vector multiplication (MVM) have been demonstrated, they still partially rely on the electronic domain to perform the matrix operation. In this paper, we demonstrate MVM using nonlinear wave mixing, enabling the matrix operation to be performed in the optical domain. Each column of the matrix is modulated onto different subcarriers, in which the column elements are serialized in time. The vector elements are encoded onto separate CW tones at different wavelengths. The MVM operation is carried out using nonlinear wave mixing in a single periodically poled lithium niobate waveguide, in which the elements of the output vector are serialized in time. We show MVM at two different clock rates (3 and 5 GHz) and for different input vectors. The resulting output vectors have error standard deviations of 2.89-3.55%, corresponding to 4.8-5.1 bits of precision.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 12","pages":"4018-4021"},"PeriodicalIF":3.1,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144289504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0