Optical Fiber Technology最新文献_第2页

Tungsten disulfide nanosheet-sensitized fiber plasmonic biosensors for enhanced sensitivity in hemoglobin detection 用于提高血红蛋白检测灵敏度的二硫化钨纳米片增敏纤维等离子体生物传感器

IF 2.7 3区计算机科学

Optical Fiber Technology Pub Date : 2025-10-07 DOI: 10.1016/j.yofte.2025.104442

Junming Li , Huahao Huang , Hui Zhang , Manlin Yu , Haoyi Deng , Weisen Peng , Yunhang Luo

{"title":"Tungsten disulfide nanosheet-sensitized fiber plasmonic biosensors for enhanced sensitivity in hemoglobin detection","authors":"Junming Li , Huahao Huang , Hui Zhang , Manlin Yu , Haoyi Deng , Weisen Peng , Yunhang Luo","doi":"10.1016/j.yofte.2025.104442","DOIUrl":"10.1016/j.yofte.2025.104442","url":null,"abstract":"<div><div>Assessing hemoglobin (Hb) concentration levels is paramount in medical diagnostics and therapeutics for various hematological disorders. Accurate, rapid, portable, and non-invasive detection of Hb level is highly desired, particularly for severe patients. Herein, a tungsten disulfide (WS<sub>2</sub>) nanosheet-assisted fiber plasmonic biosensor for sensitivity-enhanced Hb concentration detection is proposed and experimentally demonstrated. The sensor architecture comprises a side-polished multimode fiber (SPMMF) serving as a signal light-guiding waveguide, a gold film supporting surface plasmon resonance (SPR), and an overlayer of WS<sub>2</sub> nanosheets amplifying the SPR response. After two deposition cycles of WS<sub>2</sub>, the sensor achieved a sensitivity of 2450.21 nm/refractive index unit (RIU), representing a 42 % improvement over the unmodified sensor. In Hb detection, a resonance wavelength response of 6.89 nm/(mg/mL) was recorded with the limit of detection (LOD) of 0.13 mg/mL. The Hb sensitivity was 64 % higher than that of the control group without WS<sub>2</sub> deposition. In addition to improving sensitivity, the WS<sub>2</sub> nanosheet overlayers offer additional benefits such as protection of metal film from oxidation, compatibility with biological systems, and the ability to detect vapor and gas. This work provides a chemical-free, sensitive, and efficient approach for detecting trace biochemical substances.</div></div>","PeriodicalId":19663,"journal":{"name":"Optical Fiber Technology","volume":"95 ","pages":"Article 104442"},"PeriodicalIF":2.7,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145267588","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

Rhodamine 6G fluorescent dye as a saturable absorber for harmonic mode-locked pulses generation in thulium-holmium doped fiber lasers 罗丹明6G荧光染料作为掺铥钬光纤激光器谐波锁模脉冲产生的可饱和吸收剂

IF 2.7 3区计算机科学

Optical Fiber Technology Pub Date : 2025-10-07 DOI: 10.1016/j.yofte.2025.104438

H. Ahmad , N.A.M. Rusni , M.Z. Samion

{"title":"Rhodamine 6G fluorescent dye as a saturable absorber for harmonic mode-locked pulses generation in thulium-holmium doped fiber lasers","authors":"H. Ahmad , N.A.M. Rusni , M.Z. Samion","doi":"10.1016/j.yofte.2025.104438","DOIUrl":"10.1016/j.yofte.2025.104438","url":null,"abstract":"<div><div>This study investigates the use of Rhodamine 6G as a new saturable absorber (SA) for achieving passive mode-locking in thulium-holmium-doped fiber lasers (THDFLs) operating in the 2 μm wavelength region. An arc-shaped fiber host enables effective interaction of the evanescent field with the Rhodamine 6G layer. The spiral-like surface morphology and nanocrystalline features of the Rhodamine 6G SA were confirmed through field emission scanning electron microscope (FESEM) analysis. With a modulation depth of 15.2 %, the Rhodamine 6G-based SA successfully initiated fundamental mode-locked pulses at a frequency of 14.6 MHz, accompanied by a signal-to-noise ratio (SNR) of 68.7 dB. Stability analysis conducted over an 8-hour operation period showed only minor SNR fluctuations, with a maximum deviation of 1.1 dB, indicating excellent long-term stability. Additionally, by increasing the pump power, the mode-locked laser was able to generate higher-order harmonic mode-locked pulses, achieving up to the 9th harmonic, corresponding to a frequency of 131.6 MHz. This demonstration indicates that Rhodamine 6G is an excellent, low-cost, and efficient organic dye-based SA that is capable of supporting both stable fundamental and harmonic mode-locking in fiber lasers operating in the 2 μm region.</div></div>","PeriodicalId":19663,"journal":{"name":"Optical Fiber Technology","volume":"95 ","pages":"Article 104438"},"PeriodicalIF":2.7,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145267578","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

Watt-level single-longitudinal-mode actively Q-switched Yb-doped fiber laser based on compound-cavity 基于复合腔的瓦级单纵模主动调q掺镱光纤激光器

IF 2.7 3区计算机科学

Optical Fiber Technology Pub Date : 2025-10-06 DOI: 10.1016/j.yofte.2025.104433

Dong Zhang , Hao Pan , Yongjian Pan , Yiwen Ma , Ming Jin

引用次数: 0

The fluorescence characteristics of Ag/g-C3N4 gel and its application in the marine atmospheric chloride ion optical fiber sensing system Ag/g-C3N4凝胶的荧光特性及其在海洋大气氯离子光纤传感系统中的应用

IF 2.7 3区计算机科学

Optical Fiber Technology Pub Date : 2025-10-04 DOI: 10.1016/j.yofte.2025.104431

Yahao Guo, Ailing Tan, Feng Liu, Xuan Guo

{"title":"The fluorescence characteristics of Ag/g-C3N4 gel and its application in the marine atmospheric chloride ion optical fiber sensing system","authors":"Yahao Guo, Ailing Tan, Feng Liu, Xuan Guo","doi":"10.1016/j.yofte.2025.104431","DOIUrl":"10.1016/j.yofte.2025.104431","url":null,"abstract":"<div><div>This paper develops a fluorescence quenching fiber optic sensing system based on nano-silver modified graphite phase carbon nitride (Ag/g-C<sub>3</sub>N<sub>4</sub>) gel for the detection of chloride ion concentration in marine atmosphere. By optimizing the ratio and preparation process, the composite ratio of 5 mg carbon nitride and 0.2 mL nano-silver was determined. The gel was coated on the end face of the plastic optical fiber (POF) and the inner wall of the hollow glass tube to construct a fluorescent optical fiber probe, which was combined with an ultraviolet light source and a photomultiplier tube (PMT) to form a miniature optical fiber sensing system. Experiments show that nano-silver modification significantly improves the sensitivity of chloride ion detection. The fluorescent material produces a fluorescence peak of 440 nm under the excitation of 370 nm light source. The sensing system exhibits good linear response characteristics in the range of 0–15 µg/L chloride ion concentration, the limit of detection (LOD) is as low as 0.0143 µM, and the response time is about 3 s. The sensing system has the advantages of miniaturization, environmental friendliness and strong anti-interference ability, which provides a new idea for the application of fluorescent materials and optical fiber sensing technology in the field of marine environment detection.</div></div>","PeriodicalId":19663,"journal":{"name":"Optical Fiber Technology","volume":"95 ","pages":"Article 104431"},"PeriodicalIF":2.7,"publicationDate":"2025-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145220392","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

PT symmetry breaking enabled single-longitudinal-mode brillouin erbium-doped fiber laser with ultra narrow linewidth PT对称破缺实现了超窄线宽单纵模布里渊掺铒光纤激光器

IF 2.7 3区计算机科学

Optical Fiber Technology Pub Date : 2025-10-02 DOI: 10.1016/j.yofte.2025.104434

Yajun You , Sha Liu , Xulei Yang , Huijie Wang , Qiwei Chang , Wenjun He , Jian He , Yi Liu , Xiujian Chou

{"title":"PT symmetry breaking enabled single-longitudinal-mode brillouin erbium-doped fiber laser with ultra narrow linewidth","authors":"Yajun You , Sha Liu , Xulei Yang , Huijie Wang , Qiwei Chang , Wenjun He , Jian He , Yi Liu , Xiujian Chou","doi":"10.1016/j.yofte.2025.104434","DOIUrl":"10.1016/j.yofte.2025.104434","url":null,"abstract":"<div><div>This study presents an innovative design and validates through experimental implementation a Brillouin Erbium-doped hybrid fiber laser architecture employing parity-time (PT) symmetry principles. The configuration synergistically combines a kilometer-long single-mode fiber for Brillouin amplification with a polarization-engineered Sagnac loop to achieve exceptional spectral purity. Through dynamic polarization state manipulation within dual feedback paths, gain-loss equilibrium is disrupted when the stimulated Brillouin gain surpasses the loop coupling coefficient, effectively suppressing inter-mode rivalry and achieving single-longitudinal-mode output. Through the Brillouin erbium gain synergy mechanism, significantly augment Stokes optical power leveraging erbium gain amplification. Experimental characterization under 14.5 dBm pump power and 400 mW 980 nm excitation demonstrates remarkable performance metrics: 3.75 Hz 3-dB linewidth, 60 dB optical SNR, and 70 dB sideband suppression ratio. The integration of erbium amplification enables power scaling while maintaining spectral integrity through PT symmetry mediated mode selection. This work establishes a compact, high-performance laser platform for applications requiring stable narrow linewidth sources, such as coherent communications and distributed fiber sensing.</div></div>","PeriodicalId":19663,"journal":{"name":"Optical Fiber Technology","volume":"95 ","pages":"Article 104434"},"PeriodicalIF":2.7,"publicationDate":"2025-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145221265","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

Ultracompact temperature and refractive index dual-parameter sensor integrated on wedge-shaped optical fiber end-face 楔形光纤端面集成的超紧凑温度和折射率双参数传感器

IF 2.7 3区计算机科学

Optical Fiber Technology Pub Date : 2025-10-01 DOI: 10.1016/j.yofte.2025.104432

Dan Dong , Shengli Pu , Xiaolin Lv , Pan Zhou , Hong Zhang , Weinan Liu , Chencheng Zhang , Siyang Huang , Tengfei Xu , Mingjue Wu

{"title":"Ultracompact temperature and refractive index dual-parameter sensor integrated on wedge-shaped optical fiber end-face","authors":"Dan Dong , Shengli Pu , Xiaolin Lv , Pan Zhou , Hong Zhang , Weinan Liu , Chencheng Zhang , Siyang Huang , Tengfei Xu , Mingjue Wu","doi":"10.1016/j.yofte.2025.104432","DOIUrl":"10.1016/j.yofte.2025.104432","url":null,"abstract":"<div><div>This study proposes a dual-channel surface plasmon resonance (SPR) sensor integrated on a wedge-shaped optical fiber end-face, which can detect two parameters: temperature and refractive index. The sensor adopts a unique double-surface design, both coated with gold films. One surface is used for the SPR excitation, while the other serves only as the reflection surface. By adjusting the wedge angle of the wedge-shaped end-face, the angle of the incident light can be adjusted, thereby influencing the sensitivity of the entire sensor. Through simulation, an optimal wedge angle of 4° was selected. The excitation surface of the wedge-shaped optical fiber was divided into two sections for temperature and refractive index measurement, respectively. Within the temperature range of 30–45 °C, the temperature sensitivity was −4.013 nm/°C. Within the refractive index range of 1.33–1.38, the sensitivity of 2607.8 nm/RIU was obtained. This study offers new insights for the development of multi-parameter-sensitive and compact optical fiber SPR sensors, which feature a reflective probe-type configuration and facilitate miniaturization.</div></div>","PeriodicalId":19663,"journal":{"name":"Optical Fiber Technology","volume":"95 ","pages":"Article 104432"},"PeriodicalIF":2.7,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145221264","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

Demonstration of tuning thermal coefficient of delay of photonic bandgap hollow-core fiber by surface mode 光子带隙中空芯光纤延迟热系数的表面模式调谐论证

IF 2.7 3区计算机科学

Optical Fiber Technology Pub Date : 2025-09-30 DOI: 10.1016/j.yofte.2025.104429

Chaochao Shen , Dakun Wu , Xinyue Zhu , Si Chen , Binbin Lu , Hongwen Li , Fei Yu , Xiaojun Chen , Jonathan Knight

引用次数: 0

Switchable and broadly wavelength-interval-tunable multi-wavelength EDFL based on dual-channel Sagnac loop 基于双通道Sagnac环的可切换宽波长间隔可调多波长EDFL

IF 2.7 3区计算机科学

Optical Fiber Technology Pub Date : 2025-09-29 DOI: 10.1016/j.yofte.2025.104425

Zhaohui Chang, Weihua Zhang, Zhengrong Tong, Xue Wang, Hao Wang

{"title":"Switchable and broadly wavelength-interval-tunable multi-wavelength EDFL based on dual-channel Sagnac loop","authors":"Zhaohui Chang, Weihua Zhang, Zhengrong Tong, Xue Wang, Hao Wang","doi":"10.1016/j.yofte.2025.104425","DOIUrl":"10.1016/j.yofte.2025.104425","url":null,"abstract":"<div><div>A switchable and broadly wavelength-interval-tunable multi-wavelength EDFL based on dual-channel Sagnac loop is presented and experimentally investigated. The fundamental operating mechanism relies on birefringence-induced polarization-state evolution and counter-propagating optical interference within the Sagnac configuration, enabling efficient generation of stable multi-wavelength lasing with adjustable channel spacing in the EDFL. Through polarization controller (PC) adjustments, the laser achieves output spectra containing up to 8 simultaneous wavelengths. For single-wavelength operation, it generates emissions tunable between 1553.64 nm and 1558.84 nm with a minimum optical signal-to-noise ratio (OSNR) of 52.091 dB. The system demonstrates significant wavelength-spacing tunability across multi-wavelength regimes: dual-wavelength outputs achieve 25.80 nm maximum spacing, triple-wavelength 26.40 nm, quadruple-wavelength 18.20 nm, quintuple-wavelength 22.12 nm, sextuple-wavelength 11.92 nm, and septuple-wavelength 10.52 nm. The full operational spectral coverage extends from 1518.72 nm to 1560.08 nm. Featuring broad spectral tunability and multi-channel reconfigurability, this EDFL design delivers an innovative dynamically reconfigurable optical source platform optimized for next-generation fiber-optic communications and advanced optical sensing applications.</div></div>","PeriodicalId":19663,"journal":{"name":"Optical Fiber Technology","volume":"95 ","pages":"Article 104425"},"PeriodicalIF":2.7,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145220391","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

Vernier effect enhanced fiber Fabry–Pérot relative humidity sensor based on confined expansion of CaAlg hydrogel film 基于CaAlg水凝胶膜受限膨胀的游标效应增强纤维fabry - p<s:1>相对湿度传感器

IF 2.7 3区计算机科学

Optical Fiber Technology Pub Date : 2025-09-27 DOI: 10.1016/j.yofte.2025.104428

Jianxuan Wang , Jing Zhang , Xuejiao E , Xuefeng Chen , Xiujuan Yu

{"title":"Vernier effect enhanced fiber Fabry–Pérot relative humidity sensor based on confined expansion of CaAlg hydrogel film","authors":"Jianxuan Wang , Jing Zhang , Xuejiao E , Xuefeng Chen , Xiujuan Yu","doi":"10.1016/j.yofte.2025.104428","DOIUrl":"10.1016/j.yofte.2025.104428","url":null,"abstract":"<div><div>A high-sensitivity optical fiber relative humidity (RH) sensor enhanced by the Vernier effect is proposed. The sensing head consists of a humidity-sensitive Fabry–Pérot interferometer (FPI) formed at the junction of a single-mode fiber (SMF) and a hollow-core capillary fiber (HCF), where a calcium alginate (CaAlg) hydrogel film is tension-coated to serve as an elastic diaphragm. A parallel humidity-insensitive reference FPI, based on a SMF–HCF–SMF structure, is integrated to generate a Vernier interference effect, significantly amplifying the spectral response to humidity variations. The HCF is tapered to improve film adhesion and mechanical responsiveness. Upon exposure to moisture, the CaAlg film absorbs moisture and undergoes elastic buckling due to internal stress, leading to an effective cavity length change and a corresponding spectral shift. Experimental results show a nonlinear cubic response in the 50 %–95 % RH range, with a sensitivity peak of −7.19 nm/%RH was achieved at 95 % relative humidity and the polynomial correlation coefficient of 0.998. The sensor also demonstrates good repeatability and a low temperature cross-sensitivity of −0.369 nm/°C. This long-term stability, low-cost and high sensitive detection system has significant potentialfor application in field of industry and agriculture.</div></div>","PeriodicalId":19663,"journal":{"name":"Optical Fiber Technology","volume":"95 ","pages":"Article 104428"},"PeriodicalIF":2.7,"publicationDate":"2025-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145221266","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

Compact high-sensitive Mach-Zehnder-based optical fiber sensor for monitoring gaseous acetone concentrations 紧凑型高灵敏度mach - zehnder光纤传感器，用于监测气体丙酮浓度

IF 2.7 3区计算机科学

Optical Fiber Technology Pub Date : 2025-09-25 DOI: 10.1016/j.yofte.2025.104422

Yosra Hussain Kadhum , Ansam M. Salman , Abdulhadi Al-Janabi

{"title":"Compact high-sensitive Mach-Zehnder-based optical fiber sensor for monitoring gaseous acetone concentrations","authors":"Yosra Hussain Kadhum , Ansam M. Salman , Abdulhadi Al-Janabi","doi":"10.1016/j.yofte.2025.104422","DOIUrl":"10.1016/j.yofte.2025.104422","url":null,"abstract":"<div><div>A high-sensitivity, fine selectivity, and good repeatability optical fiber sensor has been proposed and fabricated for trace detection of acetone vapor concentration in the environment based on the Mach-Zehnder interferometer. The proposed sensor construction was made by splicing a no-core fiber (NCF) segment between two single-mode fiber (SMF) segments to form SMS construction. The specific interaction of acetone with the sensitive taper region of the NCF varied the effective refractive index of the propagating modes, permitting the determination of acetone concentration via tracking the interference fringes of the transmitting spectra. The resultant data show that the fabricated fiber sensor can realize the highest sensitivity with about 1.287<span><math><mrow><mo>×</mo><msup><mrow><mn>10</mn></mrow><mrow><mo>-</mo><mn>5</mn></mrow></msup></mrow></math></span> nm/ppm with a detection limit of 38 ppm in the 3.5 <span><math><mrow><mo>×</mo><msup><mrow><mn>10</mn></mrow><mn>5</mn></msup></mrow></math></span>–9.5<span><math><mrow><mo>×</mo><msup><mrow><mn>10</mn></mrow><mn>5</mn></msup></mrow></math></span> ppm concentration range. This sensor shows high stability with good repeatability and a fast response time. Meanwhile, the proposed sensor has a high ability in biomedical applications for early diagnosis of diseases and examination, as it can identify and detect lots of biological elements by employing the correlation between physical parameters and the resultant alteration in interfering fringes.</div></div>","PeriodicalId":19663,"journal":{"name":"Optical Fiber Technology","volume":"95 ","pages":"Article 104422"},"PeriodicalIF":2.7,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145158413","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