Optical Fiber Technology最新文献_第2页

Stable L-band single-frequency erbium fiber laser by applying parity-time symmetric sagnac ring design

IF 2.6 3区计算机科学

Optical Fiber Technology Pub Date : 2025-02-22 DOI: 10.1016/j.yofte.2025.104180

Chi-Chin Wu, Wen-Hao Hung, Kuan-Ming Cheng, Lan-Yin Chen, Yu-Ting Lai, Chun-Yen Lin, Tsu-Hsin Wu, Teng-Yao Yang, Chien-Hung Yeh

引用次数: 0

Annular micro-nano optic fiber sensor based on α-Fe2O3@SiO2@CS imprinting for Cu(II) ion detection

IF 2.6 3区计算机科学

Optical Fiber Technology Pub Date : 2025-02-21 DOI: 10.1016/j.yofte.2025.104174

Yue Feng , Weixiang Yuan , Wenbo Hao , Tao Shen

{"title":"Annular micro-nano optic fiber sensor based on α-Fe2O3@SiO2@CS imprinting for Cu(II) ion detection","authors":"Yue Feng , Weixiang Yuan , Wenbo Hao , Tao Shen","doi":"10.1016/j.yofte.2025.104174","DOIUrl":"10.1016/j.yofte.2025.104174","url":null,"abstract":"<div><div>Sensors for the rapid and easy detection of copper ions (Cu<sup>2+</sup>) are crucial in drinking water and healthcare. However, this research is still challenging, such as more complicated sample pretreatment and longer detection time. In this paper, a highly sensitive optic fiber sensor for trace detection of Cu<sup>2+</sup> in aqueous solution is proposed. Based on the principle of intermodal interference, the coating method of surface functionalization of functional groups is adopted, and the single-mode fiber (SMF) is bent to form an annular structure to enhance the interference, and the cone pulling machine is used to perform cone pulling treatment before coating a uniform layer of α-Fe<sub>2</sub>O<sub>3</sub>@SiO<sub>2</sub>@CS nanocomposite imprinted material. The amino and hydroxyl groups have specific recognition functions for Cu<sup>2+</sup> and can chelate with Cu<sup>2+</sup>, thus changing the refractive index of the material, which in turn makes the interference spectrum shifted. Furthermore, Cu<sup>2+</sup> is chosen as the template ion to make ion-imprinted materials, and the trace detection of Cu<sup>2+</sup>. The results showed that the interference spectrum was red-shifted with the increase of Cu<sup>2+</sup> concentration in the range of 0–1 μM with a concentration dependence coefficient of 3.35 nm/log·μM, and the maximum detection sensitivity of Cu<sup>2+</sup> reached 1232.52 nm/μM with a good linearity of 0.994. The selectivity of Cu<sup>2+</sup> was more than 70 times that of other ions. In addition, the sensor has the advantages of fast response time, high stability, good reproducibility, simple fabrication and low cost.</div></div>","PeriodicalId":19663,"journal":{"name":"Optical Fiber Technology","volume":"91 ","pages":"Article 104174"},"PeriodicalIF":2.6,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143453341","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

High-sensitivity refractive index sensor based on ultrafine conical no-core optical fiber

IF 2.6 3区计算机科学

Optical Fiber Technology Pub Date : 2025-02-21 DOI: 10.1016/j.yofte.2025.104175

Yuxuan Qi , Hailong Liu , Ying Chen , Jiacheng Lv , Yubo Liu , Yanjie Zhao , Jiasheng Ni

{"title":"High-sensitivity refractive index sensor based on ultrafine conical no-core optical fiber","authors":"Yuxuan Qi , Hailong Liu , Ying Chen , Jiacheng Lv , Yubo Liu , Yanjie Zhao , Jiasheng Ni","doi":"10.1016/j.yofte.2025.104175","DOIUrl":"10.1016/j.yofte.2025.104175","url":null,"abstract":"<div><div>A high-sensitivity refractive index (RI) sensor based on a Mach-Zehnder Interferometer (MZI) configuration utilizing ultrafine tapered no-core fiber (Tapered No-Core Fiber, TNCF) is proposed and fabricated. The sensor consists of a single-mode fiber (SMF) – no-core fiber (NCF) – single-mode fiber (SMF) structure, with a tapered configuration formed in the no-core fiber region via the fusion tapering process. Multi-mode interference (MMI) and the excitation of higher-order modes within the tapered region significantly enhance the evanescent field effect of the light beam, thereby improving the sensor’s sensitivity to refractive index variations. Three sensors with tapered waist diameters of 60.1 μm, 41.2 μm, and 22.1 μm were fabricated. Experimental results show that, within refractive index ranges of 1.338–1.358 and 1.347–1.405, the refractive index sensitivity of the sensor increases significantly as the waist diameter of the tapered region decreases. When the tapered waist diameter is 22.1 μm, the refractive index sensitivity reaches 617.60 nm/RIU and 643.36 nm/RIU, with linearity coefficients of R<sup>2</sup> = 0.9835 and R<sup>2</sup> = 0.9994, demonstrating excellent sensitivity and linear performance. The proposed sensor not only exhibits high sensitivity, structural stability, and a wide measurement range, but also demonstrates suitability for high-precision refractive index measurements in the fields of medicine, biological sensing, and energy.</div></div>","PeriodicalId":19663,"journal":{"name":"Optical Fiber Technology","volume":"91 ","pages":"Article 104175"},"PeriodicalIF":2.6,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143453342","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

Inter-sequence-attention Transformer network for distributed fiber-optic sensing signal recognition

IF 2.6 3区计算机科学

Optical Fiber Technology Pub Date : 2025-02-19 DOI: 10.1016/j.yofte.2025.104171

Junyi Duan, Jiageng Chen, Zuyuan He

{"title":"Inter-sequence-attention Transformer network for distributed fiber-optic sensing signal recognition","authors":"Junyi Duan, Jiageng Chen, Zuyuan He","doi":"10.1016/j.yofte.2025.104171","DOIUrl":"10.1016/j.yofte.2025.104171","url":null,"abstract":"<div><div>Distributed fiber-optic acoustic sensing (DAS) is an emerging technology which can capture acoustic waves everywhere along the sensing fiber. The recognition of such spatial-temporal sensing data is a crucial step in some applications of DAS. In this work, we extend the Transformer neural network well known for its state-of-the-art performance in sequential tasks into an inter-sequence form, mainly by rearranging the query matrices, key matrices, and value matrices separately from each temporal sequence, into piles of matrices that each matrix contains information from all sequences, consequently getting inter-sequence attention weights and attention matrices. The network is named inter-sequence-attention Transformer (ISAT), which simultaneously extracts the temporal and spatial joint features of DAS data, while explicitly preferring temporal dimension to spatial dimension rather than treating them equally like in 2D convolution neural networks (CNNs). According to evaluation results based on the open dataset, the ISAT network shows an improvement in aspects of both recognition accuracy and parameter efficiency compared with previously proposed networks.</div></div>","PeriodicalId":19663,"journal":{"name":"Optical Fiber Technology","volume":"91 ","pages":"Article 104171"},"PeriodicalIF":2.6,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143437483","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

Polarization state of light manipulation via MXene driven all optical modulator 通过 MXene 驱动的全光调制器操纵光的偏振态

IF 2.6 3区计算机科学

Optical Fiber Technology Pub Date : 2025-02-18 DOI: 10.1016/j.yofte.2025.104173

Seong Hong Chang , Sin Jin Tan , Xiau San Cheng , Zian Cheak Tiu , Fauzan Ahmad , Sulaiman Wadi Harun

引用次数: 0

Cd(II) detection technology of FSMC-IIP modified optical microfiber coupler

IF 2.6 3区计算机科学

Optical Fiber Technology Pub Date : 2025-02-13 DOI: 10.1016/j.yofte.2025.104157

Chi Liu , Tao Shen , Tianyu Yang , Jiaqing Li , Xiaoyu Zhu , Yue Feng , Tianyu Sun , Junshan Gao

{"title":"Cd(II) detection technology of FSMC-IIP modified optical microfiber coupler","authors":"Chi Liu , Tao Shen , Tianyu Yang , Jiaqing Li , Xiaoyu Zhu , Yue Feng , Tianyu Sun , Junshan Gao","doi":"10.1016/j.yofte.2025.104157","DOIUrl":"10.1016/j.yofte.2025.104157","url":null,"abstract":"<div><div>Cadmium ions (Cd(II)) represent a significant industrial pollutant with detrimental effects on human health. This study proposes a high-sensitivity optical fiber sensor for detecting Cd(II), which is modified with an optical microfiber coupler(OMC) and utilizes ion imprinting technology. In this approach, Cd(II) were selectively coordinated with the Fe<sub>3</sub>O<sub>4</sub>@SiO<sub>2</sub>@MoS<sub>2</sub>@CTS ion-imprinted nanomaterial (FSMC-IIP), resulting in the formation of a complex that significantly diminished the cross-sensitivity to other metal ions. The strong evanescent field generated by OMC interacts with the FSMC-IIP that adsorbs Cd(II), leading to alterations in the evanescent field. This interaction enables effective detection of Cd(II) with enhanced sensitivity. At 25℃and PH=6, the OMC/FSMC-IIP sensor showed a detection limit of 0.006<span><math><mi>μ</mi></math></span>M for Cd(II). In addition, the FSMC-IIP/OMC sensor exhibited a short response time of 36s and a wide detection range of 0.0001<span><math><mi>μ</mi></math></span>M<span><math><mrow><mo>∼</mo><mn>10</mn><mi>μ</mi></mrow></math></span>M. The sensor achieved a Cd(II) recovery rate of 89.1% <span><math><mo>∼</mo></math></span>117.81% in real water samples, which is feasible for application in water quality testing and other fields.</div></div>","PeriodicalId":19663,"journal":{"name":"Optical Fiber Technology","volume":"91 ","pages":"Article 104157"},"PeriodicalIF":2.6,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143402824","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

Machine learning-based algorithm for core allocation in spatial division multiplexing elastic optical networks

IF 2.6 3区计算机科学

Optical Fiber Technology Pub Date : 2025-02-13 DOI: 10.1016/j.yofte.2025.104155

Jurandir C. Lacerda Jr. , Carlos E.B. Sousa , Aline G. Morais , Adolfo V.T. Cartaxo , André C.B. Soares

引用次数: 0

PtTe2-based high-order harmonic (368 MHz) ultrafast fiber laser

IF 2.6 3区计算机科学

Optical Fiber Technology Pub Date : 2025-02-11 DOI: 10.1016/j.yofte.2025.104159

Yutian He , Yan Xu , Shixian Sun , Weijie Xu , Yu Wei , Fei Wang , Mingzhi Sun , Cheng Lu , Wenfei Zhang , Guomei Wang , Caixun Bai , Zhao Li , Huanian Zhang , Nannan Xu , Shenggui Fu

{"title":"PtTe2-based high-order harmonic (368 MHz) ultrafast fiber laser","authors":"Yutian He , Yan Xu , Shixian Sun , Weijie Xu , Yu Wei , Fei Wang , Mingzhi Sun , Cheng Lu , Wenfei Zhang , Guomei Wang , Caixun Bai , Zhao Li , Huanian Zhang , Nannan Xu , Shenggui Fu","doi":"10.1016/j.yofte.2025.104159","DOIUrl":"10.1016/j.yofte.2025.104159","url":null,"abstract":"<div><div>This paper investigates the application of PtTe<sub>2</sub> as a saturable absorber (SA) in Er-doped fiber lasers (EDFL). We obtained PtTe<sub>2</sub>-SA based on tapered optical fiber while using liquid phase exfoliation (LPE). The modulation depth of PtTe<sub>2</sub>-SA reached 7.1 %,demonstrating excellent nonlinear absorption characteristics. An ultrafast fiber laser based on PtTe<sub>2</sub>-SA was designed and constructed. Both conventional soliton (CS) and higher-order harmonic mode-locking (HML) were realized. The CS was realized with the central wavelength of 1559.4 nm and the pulse width of 919 fs, at a pump power of 350 mW. Exhibiting a repetition frequency of 4.72 MHz and a signal-to-noise ratio of 60.3 dB. Increasing the pump power to 422 mW and 726 mW resulted in the generation of 2nd order and 78th order HML, respectively. The 78th order HML achieved the repetition frequency of up to 368 MHz and the pulse width of 1.93 ps. These results indicate that PtTe<sub>2</sub>-SA exhibits excellent optical modulation properties in EFDL while holds promise for applications in high repetition frequency fiber lasers.</div></div>","PeriodicalId":19663,"journal":{"name":"Optical Fiber Technology","volume":"91 ","pages":"Article 104159"},"PeriodicalIF":2.6,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143378791","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

Design and analysis of fiber optic SPR sensor under optimum radiation damping for the detection of Escherichia coli bacteria

IF 2.6 3区计算机科学

Optical Fiber Technology Pub Date : 2025-02-10 DOI: 10.1016/j.yofte.2025.104170

Adarsh Chandra Mishra , Anuj K. Sharma , Pooja Lohia , D.K. Dwivedi

{"title":"Design and analysis of fiber optic SPR sensor under optimum radiation damping for the detection of Escherichia coli bacteria","authors":"Adarsh Chandra Mishra , Anuj K. Sharma , Pooja Lohia , D.K. Dwivedi","doi":"10.1016/j.yofte.2025.104170","DOIUrl":"10.1016/j.yofte.2025.104170","url":null,"abstract":"<div><div>This article presents a theoretical investigation of fiber based plasmonic biosensor for the detection of e-coli bacteria in water medium. The method involves systematic optimization of parameters under optimum radiation damping (ORD) in near infrared region of wavelength. The sensor design consists of a 13.1 % germanium doped silica core, perfluorinated homopolymer cladding and a heterostructure of gallium nitride (GaN), silver (Ag) and aluminum nitride (AlN). Poly-l-lysine homopolymer is used over AlN to improve the specificity of the sensor by immobilization of bacteria on fiber surface. The structure is optimized based on the thickness of layers and operating wavelength using 2D simulation technique on MATLAB software. The initial simulations provided a figure of merit (FOM) of 4219 RIU<sup>−1</sup> which enhanced up to 14,420 RIU<sup>−1</sup> after simultaneous optimization of thicknesses. We demonstrated that our sensing mechanism is extremely accurate and capable of reliable detection of e-coli with sensitivity of 201.86 deg./RIU, FWHM of 0.014° and power loss ratio (PLR) of 3.09. The combined FOM for the sensor is 44255.58 μm<sup>4</sup>/RIU which is way higher than previously reported designs. The chosen materials are easily available and cheap with well-established fabrication techniques. Due to its high FOM and selectivity, the sensor opens the possibility of successful device level implementation.</div></div>","PeriodicalId":19663,"journal":{"name":"Optical Fiber Technology","volume":"91 ","pages":"Article 104170"},"PeriodicalIF":2.6,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143377694","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

Supermode noise suppression with polarization- self-stabilization dual-loop for harmonic active mode-locking optoelectronic oscillator

IF 2.6 3区计算机科学

Optical Fiber Technology Pub Date : 2025-02-10 DOI: 10.1016/j.yofte.2025.104147

Deqi Li , Tianshu Wang , Shutong Liu , Ping Zhang , Shaoqian Tian , Baoqun Li , Yan Chen , Tianjiao Wu , Sunde Wang , Junda Chen

{"title":"Supermode noise suppression with polarization- self-stabilization dual-loop for harmonic active mode-locking optoelectronic oscillator","authors":"Deqi Li , Tianshu Wang , Shutong Liu , Ping Zhang , Shaoqian Tian , Baoqun Li , Yan Chen , Tianjiao Wu , Sunde Wang , Junda Chen","doi":"10.1016/j.yofte.2025.104147","DOIUrl":"10.1016/j.yofte.2025.104147","url":null,"abstract":"<div><div>A harmonic active mode-locked optoelectronic oscillator (HAML-OEO) with a polarization-self-stabilization dual-loop architecture is proposed to generate microwave pulse train with ultra-low supermode noise. Unlike traditional dual-loop HAML-OEOs, the input light in each loop passes through a 45° Faraday Rotator (FR) and different lengths of single mode fiber after reflecting off a 45° Faraday Rotator Mirror (FRM), the polarization state of the output and input optical signals is rotated by 180°, ensuring it is unaffected by external environmental disturbances. Meanwhile, the required fiber length is cut in half due to the dual loop is a reflective structure. Through using the polarization self-stabilization technique and the “Vernier effect”, the unwanted longitudinal modes are weakened at the early stage of the oscillation, which is beneficial for suppressing the supermode noise generated by phase-locking between unwanted modes in harmonic mode-locked. In the experiment, microwave pulse train with repetition rates of 506 kHz and 1.012 MHz are generated through 5th- and 10th-order harmonic mode locking, where the supermode noise suppression rations are measured to be beyond 63.09 dB and 55.11 dB, respectively.</div></div>","PeriodicalId":19663,"journal":{"name":"Optical Fiber Technology","volume":"91 ","pages":"Article 104147"},"PeriodicalIF":2.6,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143377691","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