Optical Fiber Technology最新文献_第9页

Nonlinear dynamics of soliton explosion and pulsation in a Yb-doped mode-locked fiber laser 掺镱模式锁定光纤激光器中孤子爆发和脉冲的非线性动力学特性

IF 2.6 3区计算机科学

Optical Fiber Technology Pub Date : 2024-10-01 DOI: 10.1016/j.yofte.2024.103992

Qiongqianhui Wang, Zhezhe Li, Qiaoqiao Xu, Shijie Sun, Zhi Wang, Pan Wang, Yan-ge Liu

引用次数: 0

A RMSCA algorithm for space division multiplexing elastic optical networks with core switching 带核心交换的空分复用弹性光网络的 RMSCA 算法

IF 2.6 3区计算机科学

Optical Fiber Technology Pub Date : 2024-09-30 DOI: 10.1016/j.yofte.2024.103978

Junling Yuan , Zixuan Wu , Xuhong Li , Qikun Zhang , Xuyang Hao

{"title":"A RMSCA algorithm for space division multiplexing elastic optical networks with core switching","authors":"Junling Yuan , Zixuan Wu , Xuhong Li , Qikun Zhang , Xuyang Hao","doi":"10.1016/j.yofte.2024.103978","DOIUrl":"10.1016/j.yofte.2024.103978","url":null,"abstract":"<div><div>Space division multiplexing elastic optical networks (SDM-EONs) have attracted much attention due to the advantages of high capacity, flexibility, and spectrum utilization. Space division multiplexing technology enhances the capacity of a single fiber link by using multi-core fiber (MCF). With the support of MCFs, SDM-EONs will become an important form of future optical transmission networks.In order to reduce the blocking rate of the network, this paper proposes a routing, modulation format, spectrum and core allocation (RMSCA) algorithm based on the maximum number of available cores with core switching. The algorithm selects the spectrum block with the most available cores in the entire path for spectrum allocation by using core switching. We perform simulations on two networks, NSF-Net and UBN24, and compare them with the spectrum allocation algorithm with core switching (FF-ISC-RMSCA), which uses first-time adaptation, and the spectrum allocation algorithm with maximum number of cores available (N-ISC-RMSCA), which does not perform core switching. Simulation results show that the proposed algorithm significantly reduces the bandwidth blocking rate and has high spectrum utilization.</div></div>","PeriodicalId":19663,"journal":{"name":"Optical Fiber Technology","volume":"88 ","pages":"Article 103978"},"PeriodicalIF":2.6,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142357932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An asymmetric STNS-MZI structure and its applications in temperature and Cd2+ monitoring 不对称 STNS-MZI 结构及其在温度和 Cd2+ 监测中的应用

IF 2.6 3区计算机科学

Optical Fiber Technology Pub Date : 2024-09-29 DOI: 10.1016/j.yofte.2024.103987

Huiyu Li , Qiqi Tu , Zhang Zhang , Jin Tao , Changyuan Yu , Xuguang Huang , Wei Xu

{"title":"An asymmetric STNS-MZI structure and its applications in temperature and Cd2+ monitoring","authors":"Huiyu Li , Qiqi Tu , Zhang Zhang , Jin Tao , Changyuan Yu , Xuguang Huang , Wei Xu","doi":"10.1016/j.yofte.2024.103987","DOIUrl":"10.1016/j.yofte.2024.103987","url":null,"abstract":"<div><div>In this paper, an asymmetric fiber Mach-Zehnder interferometer (MZI) is presented and investigated. The proposed asymmetric MZI structure is mainly constructed with thin core fiber (TCF) and no core fiber (NCF), sandwiched between single mode fibers (SMFs). Note that the TCF is spliced with a slight offset such that higher order cladding modes could be effectively exited. The SMF-TCF-NCF-SMF (STNS) structure is adjusted by a finite-difference beam propagation method simulation to achieve an optimal interference spectrum. Temperature monitoring performance is addressed and the calculated sensing resolution is about 0.28 ℃ with high precision of ± 0.3 °C. Moreover, as for the Cd<sup>2+</sup> monitoring application, the TCF is further etched and then coated with 1-allyl-2-thiourea (ATU) forming cross-linked “-S-Cd-S-” structure. The results show that the resolution of Cd<sup>2+</sup> could reach 2.37 × 10<sup>−11</sup>mol /L, which shows a four order of magnitude improvement compared with our previous work. Therefore, the proposed asymmetric STNS-MZI interference structure has great potential in future applications.</div></div>","PeriodicalId":19663,"journal":{"name":"Optical Fiber Technology","volume":"88 ","pages":"Article 103987"},"PeriodicalIF":2.6,"publicationDate":"2024-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142357931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Temperature extraction from Brillouin sensing based on temporal convolutional networks 基于时序卷积网络的布里渊传感温度提取技术

IF 2.6 3区计算机科学

Optical Fiber Technology Pub Date : 2024-09-28 DOI: 10.1016/j.yofte.2024.103986

Wei Zhang , Zhihui Sun , Xiaoan Chen , Zhe Kong , Shaodong Jiang , Faxiang Zhang , Chang Wang

引用次数: 0

Controlling spatial optical illuminations in optogenetics using an angled optical fiber tip 利用倾斜光纤头控制光遗传学中的空间光学照明

IF 2.6 3区计算机科学

Optical Fiber Technology Pub Date : 2024-09-28 DOI: 10.1016/j.yofte.2024.103988

Fatemeh Karami, Mohammad I. Zibaii, Azam Layeghi

{"title":"Controlling spatial optical illuminations in optogenetics using an angled optical fiber tip","authors":"Fatemeh Karami, Mohammad I. Zibaii, Azam Layeghi","doi":"10.1016/j.yofte.2024.103988","DOIUrl":"10.1016/j.yofte.2024.103988","url":null,"abstract":"<div><div>The advent of optogenetic tools has revolutionized neuroscience research through its spatiotemporally precise activation of specific neurons by illuminating light on opsin-expressing neurons. A long-standing challenge of <em>in vivo</em> optogenetics remains in delivering light to multiple brain sites simultaneously and maintaining high spatial resolution. Optical fiber-based technologies have been proposed to address these challenges. This work presents the fabrication and characterization of an innovative angled optical fiber probe based on a double-sided angled tip (DSAT) structure. A custom griding setup was used for the reproducible fabrication of a smooth DSAT probe. The designed probe enables precise spatial control of light propagation in brain tissue in which DSAT at angled tip 55° achieving a maximum lateral illumination position of ± 420 μm away from the optical axis and a peak irradiance of 478.5 mW/mm<sup>2</sup>, using a 5 mW of 473 nm laser light. Also, the designed DAST probe was simulated based on ray tracing method and obtained the practical tip angle to evaluate the propagation of light rays emitted from the DSAT at various input optical angles ranging from 0° to 12.5° to predict their irradiance and positions in the modelled tissue. The results indicate the probe generates two elliptical rings each containing two spots with higher optical concentration. Consequently, this device provides four optical spots with irradiance peaks that enable simultaneous illumination of four different locations in the brain tissue. Obtained experiment results are in good agreement with simulation results which can be used for multipoint illumination of brain tissue in optogenetics applications.</div></div>","PeriodicalId":19663,"journal":{"name":"Optical Fiber Technology","volume":"88 ","pages":"Article 103988"},"PeriodicalIF":2.6,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142358456","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Triple parametric sensor based on double-clad fiber and waist-enlarged taper structure 基于双包层纤维和腰部增大锥度结构的三参数传感器

IF 2.6 3区计算机科学

Optical Fiber Technology Pub Date : 2024-09-26 DOI: 10.1016/j.yofte.2024.103984

Wenchao Li , Mengna Chen , Rongbing Xiao , Shuanglong Cui , Yan Bai , Jian Xing , Tiebin Wang , Xuelan He , Shaoxian Zhang

引用次数: 0

Routing and assignment of wavelengths for bicube in linear array WDM optical networks 线性阵列波分复用光学网络中的双立方波长路由和分配

IF 2.6 3区计算机科学

Optical Fiber Technology Pub Date : 2024-09-25 DOI: 10.1016/j.yofte.2024.103977

V. Vinitha Navis, A. Berin Greeni

引用次数: 0

Dynamic distributed Brillouin sensing based on pump frequency-agile quadrupling modulation 基于泵频率敏捷四倍频调制的动态分布式布里渊传感

IF 2.6 3区计算机科学

Optical Fiber Technology Pub Date : 2024-09-25 DOI: 10.1016/j.yofte.2024.103979

Xueqian Bai , Wenrui Wang , Biying Zhou , Jun Hu , Ruoqi Wang , Lingyun Ye , Kaichen Song

引用次数: 0

Research on satellite structural health monitoring based on ultrashort femtosecond grating array and artificial neural network 基于超短飞秒光栅阵列和人工神经网络的卫星结构健康监测研究

IF 2.6 3区计算机科学

Optical Fiber Technology Pub Date : 2024-09-24 DOI: 10.1016/j.yofte.2024.103981

Congying Mu , Yunshan Zhang , Chuanxiang Li , Yunxin Wang , Dayong Wang , Shuyang Hu , Li Fan

{"title":"Research on satellite structural health monitoring based on ultrashort femtosecond grating array and artificial neural network","authors":"Congying Mu , Yunshan Zhang , Chuanxiang Li , Yunxin Wang , Dayong Wang , Shuyang Hu , Li Fan","doi":"10.1016/j.yofte.2024.103981","DOIUrl":"10.1016/j.yofte.2024.103981","url":null,"abstract":"<div><div>The safety of spacecraft and satellite in orbit is very important, and structural health monitoring is needed. At present, the existing technology is limited by load and difficult to realize. In this paper, we propose a feasible method to detect and locate the damage of satellite by combining ultrashort femtosecond grating array inscribed on oxide-doped fiber with multilayer artificial neural network. An oxide-doped fiber with high robustness is designed, and ultrashort grating arrays are fabricated on the fiber by femtosecond laser point-by-point writing technology. The effects of impactor velocity and angle on impact response was investigated by numerical simulations and physical experiments. Subsequently, repeated impact experiments were conducted on the satellite to obtain the training dataset and testing dataset for two-dimensional convolutional neural network. The network with symmetric convention kernels has an 88.12% localization accuracy and a better performance in boundary region, and the network architecture with asymmetric convention kernels has a 90.31% accuracy and a better performance in middle region.</div></div>","PeriodicalId":19663,"journal":{"name":"Optical Fiber Technology","volume":"88 ","pages":"Article 103981"},"PeriodicalIF":2.6,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142315064","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Damage detection of Kevlar woven fabric using optical fiber multimode interferometer 利用光纤多模干涉仪检测凯夫拉纤维编织物的损坏情况

IF 2.6 3区计算机科学

Optical Fiber Technology Pub Date : 2024-09-24 DOI: 10.1016/j.yofte.2024.103980

Yufang Bai , Jie Zeng , Guyuan Ji , Junsong Yu

{"title":"Damage detection of Kevlar woven fabric using optical fiber multimode interferometer","authors":"Yufang Bai , Jie Zeng , Guyuan Ji , Junsong Yu","doi":"10.1016/j.yofte.2024.103980","DOIUrl":"10.1016/j.yofte.2024.103980","url":null,"abstract":"<div><div>Kevlar woven fabric is crucial for the lightweight design of aerospace structures due to its unique advantages. However, it is susceptible to damage during operation, making effective damage detection essential for ensuring structural reliability. Nevertheless, conventional sensors used for damage detection have limitations such as complex manufacturing processes and weight. To address this issue, this paper proposed a simple singlemode-multimode-singlemode (SMS) optical fiber sensor to collect vibration signals and construct a damage recognition model based on natural frequency in order to identify the size of damages in Kevlar woven fabrics. To achieve a highly linear and accurate sensor, a length determination criterion for multimode optical fiber segments based on quasi-image, notch, and transmission spectrum loss was proposed. An optical sensor was fabricated based on this criterion. The feasibility and sensitivity of the sensor for vibration signal measurement were verified by constructing a vibration signal measurement device. An experimental study was conducted to detect damage in Kevlar tapes, where the natural frequency changes measured by the SMS sensor were integrated with an optimized multi-variable gray model for damage size detection. The experimental results indicate that the estimated error in damage size is 0.71%. The damage identification system proposed in this paper offers a simple and cost-effective solution for measuring damage in flexible structures using fiber optic sensors.</div></div>","PeriodicalId":19663,"journal":{"name":"Optical Fiber Technology","volume":"88 ","pages":"Article 103980"},"PeriodicalIF":2.6,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142315480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0