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An optimization investigation of enhanced practicality for the OFH/PC scheme based PON monitoring system Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-04-23 Jianfeng Deng, Xuan Zhang
We propose a discrete and average approach, focusing on the code set rather than individual codes, for the PON monitoring system based on the optical frequency hopping/periodic code scheme. The discrete and averaged codes are designed to support large-capacity network monitoring, particular for next-generation PONs, while preserving the original encoder structure of the PON monitoring system. The proposed
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Soliton mode-locked pulse generation with Polyaniline saturable absorber Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-04-22 Aeriyn D. Ahmad, Norrima Mokhtar, Irfan Anjum Badruddin, Sarfaraz Kamangar, Retna Apsari, Sulaiman W. Harun
We demonstrate the successful mode-locking of an Erbium-doped fiber laser (EDFL) utilizing a Polyaniline (PANI) saturable absorber (SA), resulting in the production of picosecond pulses at a frequency of 1.8 MHz within an elongated ring cavity. The SA is engineered by embedding PANI into Polyvinyl Alcohol (PVA). This conducting polymer-based SA exhibits favorable optical nonlinear properties, boasting
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Development of carbon dioxide sensor using fiber optic-based refractometer Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-04-22 Patchanon Sekhararidhi, Phairin Thaisongkroh, Saroj Pullteap
In this work, a fiber optic-based refractometer has continuously been developed for measuring carbon dioxide (CO) using the evanescent wave method. Consequently, this technique is utilized to determine the light absorption values. Further, the chemical compound is also used to coat onto the modified sensing probe. However, this probe is, generally, made from multi-mode fiber (MMF). Moreover, the principle
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On the application of explainable AI in optimizing the performance and design of fiber optic SPR sensor Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-04-22 Yogendra Swaroop Dwivedi, Rishav Singh, Anuj K. Sharma, Ajay Kumar Sharma
In recent years, there has been a significant surge in interest surrounding the utilization of machine learning techniques to optimize the performance of fiber optic sensors. This paper delves into the integration of machine learning methodologies, with a specific focus on Explainable Artificial Intelligence (XAI) models, within the domain of fiber optic surface plasmon resonance (SPR) sensors. We
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Dual-parameter combined measurement sensor based on tri-metal structure Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-04-19 Yuntian Teng, Songyuan Shi, Zhongchao Qiu, Fengxin Pei, Peng Zhang
Simultaneous measurement of strain and temperature in vibrating environments has always been a key technical issue in the field of structural health monitoring. To address the bottleneck of inadequate dual-parameter measurement performance in existing Fiber Bragg Grating (FBG) strain and temperature sensors, a new type of fiber optic grating sensor with anti-vibration capabilities for the measurement
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Optical fiber SPR sensor for alpha-fetoprotein detection based on boronate affinity surface molecularly imprinting Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-04-19 Xiaozhan Yang, Yucheng Zhang, Bin Chen, Haotian Wu
An optical fiber probe-based surface plasmon resonance (SPR) sensor was fabricated for the detection of alpha-fetoprotein, the detection can be obtained by using the reversible interactions between boric acid and -diol-containing compounds. 1 cm cladding of the one end of the plastic-clad multimode fiber (PCMF) is stripped, and the silver film is deposited on the end face of the PCMF to enhance the
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Design and construction of a uniaxial accelerometer by using SMS fiber Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-04-17 Salvador Israel Avilés-López, Miguel Ángel Basurto-Pensado, Juan Carlos García-Castrejón, Laura Lilia Castro-Gómez, Héctor Miguel Buenabad-Arias
This work presents the design and test of a uniaxial accelerometer by using single mode-multi mode-single mode fiber optic. This device is based on the loss of optical power when is submitted to movement. Test results show that the sensor can measure over a broad range with good sensitivity, from 10 to 2 kHz.
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Fiber-optic temperature sensing using Raman spectrum near Rayleigh peak Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-04-17 Yosuke Mizuno, Katsuichiro Nakazawa, Hamza Javid, Kohei Noda, Kentaro Nakamura, Heeyoung Lee
This paper presents a high-speed Raman temperature sensor that is highly compatible with current strain sensors. Challenging conventional assumptions, we found that at a communication wavelength of 193 THz, the optimal frequency for measuring Raman scattering power is not the typically dominant 206 THz, linked to stimulated Raman scattering, but rather around 195 THz, in proximity to the Rayleigh scattering
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Fiber Bragg grating-based accelerometer design based on multi-objective optimization Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-04-16 Leandro Macedo, Pablo Louzada, Luis Gustavo Villani, Anselmo Frizera, Carlos Marques, Arnaldo Leal-Junior
In this work, a Fiber Bragg grating-based accelerometer design is presented. Different geometries (Double-L Cantilever, Single Cantilever, Triangular Cantilever, Clamped–Clamped Cantilever, Capillary Steel Tube, and Flexible Hinges) are analyzed using analytical models to select the one that meets the project requirements: natural frequency of at least 500 Hz and acceleration sensitivity of at least
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High generalization identification method based on MI-SI distributed optical fiber sensor and video signals Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-04-13 Yixiao Ma, Yuchen Song, Kun Jia, Xin Lai, Lai Zhang, Qian Xiao, Bo Jia
A pattern recognition method for intrusion signals is introduced, leveraging distributed optical fiber sensors and convolutional neural networks. To enhance the model's generalization capabilities, two strategies are employed. Firstly, the sensor structure is refined, incorporating the strengths of both the Sagnac and Michelson interferometers to create a hybrid design with a wide frequency response
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Denoising of burst vibrations by adaptive polynomial fitting in φ-OTDR Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-04-13 Qian He, Sanjiang Tang, Ying Wang, Tong Li
Aiming to improve the sensing performance of phase-sensitive optical time-domain reflectometer in burst vibration events, a denoising method based on adaptive polynomial fitting is demonstrated to separate submerged vibrations from background noises. The randomly distributed low-frequency noises arising from the sensing system or environments can degrade the signal-to-noise ratio in detecting burst
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Porphyrin based-optical fiber sensor for pattern recognition of chlorides and nitrates Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-04-12 Mukti Yadav, Kaustubh Kundu, R.S. Kaler, T. Kundu
The paper introduces a novel approach to develop a photonic device for chemical applications using an evanescent wave absorption technique-based optical fiber probe layered with a Tetraamine porphyrin (TAPP) monolayer exploiting the optical properties of TAPP. The interactions between the TAPP and nitrate and chloride ions in the solution phase were monitored and the changes in the absorption spectra
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Ultra-narrow linewidth single-longitudinal-mode fiber laser using Nested Fiber Ring and saturable absorber Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-04-11 Ziqi Li, Jianming Shang, En Zhu, Shangsu Ding, Yichen Zhang, Bin Luo, Song Yu
In this paper, we demonstrate a simple structure, ultra-narrow linewidth, extremely high stability and high optical signal to noise ratio single-longitudinal-mode (SLM) erbium-doped fiber laser (EDFL). Nested Fiber Ring (NFR), nested in the ring cavity of EDFL, is employed to serve as a high quality mode filter to eliminate the dense longitudinal mode of the EDFL. The mode-selection capability of the
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Carbon-coated fiber for optoelectronic strain and vibration sensing Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-04-10 Josu Amorebieta, Joao Pereira, Carolina Franciscangelis, Gaizka Durana, Joseba Zubia, Joel Villatoro, Walter Margulis
In this article, we report on a carbon-coated optical fiber that is suitable to be used simultaneously as a transmission medium and as a sensor. It consists of a standard single mode fiber (SMF) sleeved in two layers of coating, which provide protection and isolation from external elements. The inner layer is made of carbon, whereas the outer is made of polymer. When the fiber is subjected to mechanical
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Spatially degenerated mode decomposition for few-mode fibers Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-04-09 Chenyu Wang, Jianyong Zhang, Baorui Yan, Shuchao Mi, Guofang Fan, Muguang Wang, Peiying Zhang
A mode decomposition algorithm for spatially degenerated modes within few-mode optical fibers is proposed. This proposed algorithm recovers the mode coefficients of two orthogonal polarizations through measurements of intensity distribution of three polarization angles. The relationship between the field intensity distribution and mode coefficients is derived for the polarization angle of . Additionally
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Robust low-noise 795-nm single-frequency fiber laser with continuous frequency tuning Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-04-07 Xin Cheng, Xuezong Yang, Huawei Jiang, Xin Zeng, Yan Feng
This study presents a highly efficient and low-noise all-fiber single-frequency (SF) 795-nm laser system realized using a simple and robust single-pass frequency-doubling configuration. The foundation of the system is a 1590-nm erbium-doped fiber amplifier operating in a master oscillator power amplifier configuration seeded by a distributed feedback semiconductor laser at 1590.52 nm. The main amplifier
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Mode-locked figure-9 fiber laser assisted by a SESAM for improving signal-to-noise ratio and stability Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-04-06 Xinlei Qian, Yong Kong, Yanhong Jiao, Yifan Wang
The mode-locked figure-9 fiber laser has been proved to exhibit excellent performance, but improvement of its output signal-to-noise ratio(SNR) and stability are restricted by the laser structure design. In this paper, we propose and verify a modified laser cavity to increase SNR and output stability by introducing a saturable absorber mirror(SESAM) to the single arm end of the figure-9 laser as a
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Randomness of scalar and vector random distributed soliton bunch in mode-locked fiber lasers Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-04-06 Zhao Du, Lingzhen Yang, Yueling Hao, Juanfen Wang, Yisong Li, Shengxiang Chen, Chao Zhou
The randomness of scalar and vector random distributed soliton bunch in mode-locked fiber laser is certified experimentally by correlation of the pulse trace and permutation entropy of time interval distribution of solitons. Scalar random distributed soliton bunch are obtained in an extremely low birefringent of fiber laser and the output before and after the polarization beam splitter have the same
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Smartphone-based selective and sensitive detection of vitamin B1 in synthetic urine using U-bend SPR optical fiber probe Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-04-06 Aohua Li, Xingyue Wen, Hongyu Ma, Xinghua Yang, Haili Jiang, Pingping Teng, Bo Zhang, Kang Li, Sivagunalan Sivanathan, Mohammed Ali Roula
This paper introduces an innovative optical fiber surface plasmon resonance (SPR) biosensor designed for smartphone assistance, aiming at detecting vitamin B1 in synthetic urine. The key novelty lies in the amalgamation of silver nanocoated cysteine with a gold-plated optical fiber probe, fostering efficient detection through the robust electrostatic interaction between negatively charged Cys-capped
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Non-invasive FBG-based contact lens for continuous intraocular pressure monitoring Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-04-04 S. Kumuda, G. Uma, M. Umapathy, V.R. Anand, S. Raja Ramanan, S. Asokan, K. Rajanna
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Cr2AlB2/PbS heterostructure as saturable absorber for ultrashort pulse generation Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-04-04 Yu Yang, Yong Yao, Huan Guan, Lin-guang Guo, Hao-xue Qiu, Song-ting Li, Qian-chao Wu, Xiao-chuan Xu, Ke Xu, Jia-jun Tian
Rapid progress has been realized in the nonlinear optical device applications of 2D materials. 2D materials are attractive due to their characteristics optical nonlinearities and distinctive light-matter interactions, which assure them promising nonlinear optical devices for ultrashort pulses generating. CrAlB, a member of the new series of 2D materials known as MBenes, has been predicted to have potential
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Demand Clustering and Spectrum Allocation (DCSA) problem in P2MP network with time-varying traffic Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-04-04 Der-Rong Din
In this paper, the (DCSA) problem in a point-to-multipoint (P2MP) network with time-varying traffic is studied. This article introduces several heuristic techniques that can be applied to traffic aggregation for P2MP optical network architectures employing digital subcarrier multiplexing. Based on the transmitter constraint, the algorithms assign individual subcarriers (SCs) to receiving nodes with
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Highly humidity sensitive Fabry-Perot interferometer sensor based on a liquid-solid microcavity for breath monitoring Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-04-04 Yaxun Zhang, Piliang Liu, Jinjian Yu, Liwei Ye, XiaoYun Tang, Yu Zhang, Zhihai Liu, Libo Yuan
A novel highly humidity-sensitive with a fast response time Fabry-Perot sensor based on a sealed liquid glycerol microcavity is proposed and experimental lly applied for breath monitoring. The interference cavity structure is composed of single-mode fiber and hollow-core fiber. The hollow-core fiber is filled with glycerol and ultraviolet adhesive through capillary action to form a liquid–solid microcavity
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Surface plasmon resonance methane sensor based on the D-type photonic quasi-crystal fiber with double-layer films Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-04-03 Qiang Liu, Kaiyu Wang, Yudan Sun, Xinrui Li, Wei Liu, Xueyan Zhao, Tingting Lv, Jingwei Lv, Paul K. Chu, Chao Liu
A high-sensitivity photonic quasi-crystal fiber surface plasmon resonance (PQF-SPR) methane sensor is designed and analyzed. The six-fold Penrose PQF has a D-type structure with two grooves on which TiO and Au films are deposited, and methane-sensitive film containing cryptophane-E is coated on the surface of the D-type structure. The characteristics of the sensor are analyzed by the finite element
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Modelling and design of fiber optic Fabry-Pérot accelerometer with high figure merit Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-04-03 Qinpeng Liu, Xingrui Li, Danyang Wang, Hong Gao, Dakuan Yu
The Fabry-Pérot (F-P) accelerometer model with a high figure of merit is proposed, and the corresponding accelerometer is designed and experimentally researched. Theoretical analysis shows that this accelerometer is independent of the encapsulated optical fiber stiffness and its sensitivity can be enormously improved. Meanwhile, the method of wavelength demodulation is adopted and the figure of merit
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Single-polarization dual-hollow-core anti-resonant fiber coupler by polarized mode filtered method Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-04-03 Donglian Hou, Haoqiang Jia, Xing Wang, Xinzhi Sheng, Lu Xue, Paul K. Chu, Shuqin Lou
A single-polarization (SP) coupler based on a dual-hollow-core anti-resonant fiber (DHC-ARF) by polarized mode filtered method is proposed. The DHC-ARF is composed of ten cladding tubes with each core surrounded by five cladding tubes. By introducing cladding tubes with two different thicknesses along the two orthogonal directions, one polarized mode can be filtered out due to its high confinement
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In-fiber torsion and temperature measurement based on femtosecond-laser-inscribed eccentric fiber Bragg grating Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-04-03 Huiming Su, Na Liao, Liang He, Xiyuan Wei, Honglai Yan, Haixia Jing, Xizhao Du, Wei Wang
To realize light-weight, compact-size, anti-electromagnetic-interference, and high-sensitivity torsion measurement for applications in structural engineering, biological safety, industrial production, a miniature in-fiber torsion sensor based on an eccentric fiber Bragg grating (EFBG) structure was proposed and demostrated. The EFBG was inscribed with an off-axis distance of 3 μm from the core axis
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Fe-MOF as a novel saturable-absorber for pulse operation in erbium-doped fiber lasers Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-04-03 Hafsa Hameed, Haroon Asghar, Usman Liaqat, Muhammad Sohail, Rizwan Ahmed, Zeshan A. Umar, M. Aslam Baig
This study demonstrated the utilization of an iron metal–organic framework (Fe-MOF) thin film to act as a saturable absorber in a passively Q-switched erbium-doped fiber laser cavity. The Fe-MOF thin film was prepared using the conventional solution method technique and was characterized using XRD, SEM, EDX, and Raman. The integration of Fe-MOF thin film into fiber ferrule yields a stable self-starting
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Label-free and selective heparin detection by surface functionalized fiber Fabry-Perot interferometer biosensor Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-04-03 Beibei Liu, Yansong Li, Ruiduo Wang, Xiaojiang Chen, Jianshe Li, Hui Chen, Man Jiang
Heparin (Hep) is the most commonly used anticoagulant drug in clinical settings, and precise dosage control is crucial. To enable rapid and accurate quantification of Hep concentration in clinical practice, a label-free and selective fiber-optic Fabry-Perot interferometric (FPI) biosensor detection method based on graphene oxide (GO) was proposed. This method utilizes protamine (PRTM) sulfate as the
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Positioning multiple optical network units in fiber-wireless networks: An efficient hybrid [formula omitted]-harmonic means clustering approach Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-04-03 Hojjat Emami, Saeid Pashazadeh
Wireless-optical broadband access network (WOBAN) or fiber-wireless (FiWi) is a robust and cost-effective solution to provide high bandwidth network connectivity to mobile subscribers. Optical network unit (ONU) placement is a topological optimization problem that plays a vital role in effective deployment of FiWi network. Recently, some artificial intelligence-based approaches for positioning ONUs
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Impact of pump phase modulation on QAM signals in polarization-insensitive fiber optical parametric amplifiers Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-04-03 M. Bastamova, V. Gordienko, N.J. Doran, A.D. Ellis
We examine mitigation of stimulated Brillouin scattering (SBS) in fiber optical parametric amplifiers (FOPAs) by pump phase modulation in the context of QAM signals and the state-of-art polarization-insensitive FOPA architecture. We characterize the impact of the pump phase modulation on QAM signals in the cases of single-polarization FOPAs and polarization-insensitive FOPAs, and study pathways to
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Polarization-Assisted multiparameter sensing using a single fiber Bragg grating Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-04-01 Arnaldo Leal-Junior, Mariana Silveira, Leandro Macedo, Anselmo Frizera, Carlos Marques
This paper presents the development of a multiparameter sensing system using a single fiber Bragg grating (FBG) with a polarization-assisted analysis. In this case, the FBG sensor is subjected to axial strain, torsion angle and temperature for the analysis of polarization components and spectral features variations. In addition, the responses at two orthogonal polarization states are compared to evaluate
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Wavelength tunable ring cavity erbium-doped fibre laser based on tapered Fabry Perot filter fabricated by hydrofluoric acid corrosion for stretch sensing Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-03-30 Siqi Ma, Wei He, Lihang Xu, Zhihan Li
In this study, the erbium-doped fiber laser with a ring cavity and a Fabry-Perot (F-P) filter was proposed and experimentally verified. In the design of the laser, hydrofluoric acid was employed for chemical etching to prepare the F-P cavity, and tapering was applied to the F-P cavity to enhance sensitivity. The experimentally prepared F-P filter was placed in the resonant cavity and served as a frequency-selective
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Generation and evolution of stable noise-like pulse with varying dispersion in figure-of-eight erbium-doped fiber laser Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-03-30 Hikmat Maad, Norita Mohd Yusoff, Siti Barirah Ahmad Anas, Makhfudzah Mokhtar, Zuraidah Zan, Mohd Adzir Mahdi
A stable noise-like pulse (NLP) in a figure-of-eight nonlinear optical loop mirror (NOLM) erbium-doped fiber (EDF) laser is proposed and demonstrated. The work experimentally investigated the effect of dispersion in the generation and evolution of the NLP by varying the length of single mode fiber (SMF) in the NOLM bidirectional loop (bi-loop). The lengths are 5 m, 10 m, 15.2 m, 20.2 m, 25.9 m, 50
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Machine learning approach for automated data analysis in tilted FBGs Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-03-30 Arnaldo Leal-Junior, Leandro Avellar, Anselmo Frizera, Christophe Caucheteur, Carlos Marques
This paper presents the development of an approach for automatic estimation of the regression coefficients as a function of the refractive index (RI) in Tilted Fiber Bragg Gratings (TFBGs) based on their optical spectral characteristics. The methodology is based on machine learning approach, where different samples are analyzed in various test conditions to obtain a dataset for the training of a kNN
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A Mach-Zehnder-based optical fiber sensor enables multi-directional and wide-range curvature sensing with the assistance of CNN Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-03-28 Zhengzheng Tan, Shuang Yu, Wenlong Yang, Yuanyuan Ren, Rui Pan, Xiaoyang Yu
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Experimental measurements of gamma-radiation effects on fiber-optic cables Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-03-27 Vaclav Prajzler, Marek Zikmund, Katerina Masopustova, Zuzana Sarsounova
This paper reports on our study of the effect of gamma-ray irradiation on two types of experimental fiber-optic cables. The first type of cable, CTFS, had a jelly-filling compound, whereas the second type, CTDS, was without the jelly. The cables contained three multi-mode (A, B, C) and five single-mode (D, E, F, G, H) optical fibers. The study was performed using two gamma-irradiation facilities with
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Optical fiber weak magnetic sensing system based on strip-ring sensing structure and PGC-Improved algorithm Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-03-27 Yanhua Dong, Wanyue Wang, Caihong Huang, Mei Chen, Yi Huang, Jianxiang Wen, Xiaobei Zhang, Yanhua Luo, Wei Chen, Tingyun Wang
The detection of weak magnetic fields is integral to applications in geophysical monitoring, biomagnetism, and remote sensing. This paper presents a new sensing unit structure and signal demodulation algorithm for optical fiber weak magnetic sensing system. The system uses a strip-ring sensing unit structure that combines magnetostrictive effects with optical fibers through 3D printing technology.
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Vernier effect based on cascading two Mach–Zehnder interferometers for selectable comb filter and saturable absorber applications in erbium-doped fiber laser Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-03-27 Hussein Alaa Al-Rubaiyee, Sarah Kadhim Al-Hayali, Sulaiman Wadi Harun, Abdul Hadi Al-Janabi
We present the applications of a Vernier effect based on cascading two Mach–Zehnder interferometers (MZIs) as a selectable comb filter and saturable absorber (SA) in an erbium-doped fiber laser (EDFL).Each MZI is composed of bi-tapered polarization-maintaining fibers (PMFs) constructed by fusion splicing between two single-mode fibers (SMFs), which are then connected in series to produce the Vernier
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MXene-based Q-switched fiber laser and application in laser thrombolysis Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-03-26 Xiaoli Zhao, Sicheng Li, Chenxi Zhang, Bo Fu
Near-infrared band fiber lasers exhibit strong water absorption capabilities, and their photothermal effects are often harnessed in the field of laser medical surgery. In this work, a 1.5-μm Q-switched fiber laser was realized by incorporating MXene, demonstrating its excellent performance as a saturable absorber. The output pulsed laser was amplified to achieve a maximum power of 500 mW, after which
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L-band of ∼ 1.6 μm tunable multi-wavelength mode-locked Er-doped fiber laser with an MMF- FMF based structure Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-03-26 Qixing Yu, Yaoyao Qi, Zhenxu Bai, Jie Ding, Bingzheng Yan, Yulei Wang, Zhiwei Lu, Dapeng Yan
1.6 μm tunable mode-locked fiber laser are mainly used in the biomedical field, laser processing, and other aspects, have excellent application prospects. We propose a novel MMF-FMF-based device, which acts both as a saturable absorber and a wavelength selection filter. The reduction of insertion loss caused by FMF affects the laser gain competition process, leading to changes in gain allocation and
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Low-loss C-band all-fiber FIFO device by novel bridge fiber Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-03-26 Ping Li, Wei Chen, Junhao Zhang, Yueyu Xiao, Xiaobei Zhang, Fufei Pang, Tingyun Wang
Multi-core fibers (MCF) technology is the feasible path to extend the capacity of optical fiber communication systems. However, there is a lack of low-loss and low-crosstalk multi-core fan-in and fan-out (FIFO) devices for MCF communication in the C-band. In this paper, we proposed all-fiber FIFO devices with seven trench-assisted bridge fibers (TABFs). The special structure of the TABFs could facilitate
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Metallic layered VSe2 saturable absorber based single- and dual-wavelength ultrafast fiber laser Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-03-25 Rui Wang, Junshan He, Jie Huang, Zhaoru Xie, Jingxian Chen, Lili Tao, Bingfeng Fan, Guojie Chen
Vanadium selenide (VSe) is a special two-dimensional (2D) transition metal dichalcogenide (TMD) material with metallic properties similar to graphene, which has been proved to have saturable absorption properties and used in mode-locked fiber lasers. As an excellent saturable absorber (SA) material, VSe has advantage of ultrafast carrier recovery time and broadband optical response range. However,
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Analysis of phase noise for DFT-spread OFDM systems in coherent optical communication Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-03-23 Zhenpeng Wu, Wei Wang, Xingwen Yi, Fan Li, Zhaohui Li
Previous studies have revealed the similarity between phase noise in the symbol domain of discrete Fourier transform spread (DFT-Spread) coherent orthogonal frequency division multiplexing (CO-OFDM) systems and that in the time domain. This paper further details this characteristic through both formulas and simulation results, while also analyzing and summarizing its formation conditions and influencing
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Chaotic discrete Fresnel transform for secure OFDM-PONs Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-03-22 Xinran Huang, Xinyong Peng, Liuming Zhang, Zhi Chai, Mingye Li, Weisheng Hu, Xuelin Yang
A chaotic discrete Fresnel transform (DFnT) precoding scheme is proposed for physical-layer security enhancement in orthogonal frequency division multiplexing passive optical networks (OFDM-PONs). A multi-fold OFDM data encryption is applied in terms of the chaotic scale factor, and chaotic row/column permutations in the DFnT matrix, and the chaos sensitivity creates a huge key space of . The peak-to-average
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Potential of hollow-core fibers for submarine systems Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-03-19 Alexis Carbo Meseguer, Hans Bissessur, Jean-Christophe Antona
We study the opportunities and threats that hollow core-based fibers will face on their way to be adopted in subsea systems and we compare them with multicore fibers. This latter technology is another candidate to be adopted in submarine systems probably in the shorter term. We firstly perform simulations in different scenarios for repeated subsea systems, typically power constrained since the adoption
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Real-time characterizations of soliton explosions and pulsations in a Tm-doped fiber laser Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-03-18 Shijie Sun, Zhifeng Shi, Qingbo Wang, Zhi Wang, Yan-Ge Liu, Dong Xiang, Pan Wang
Over the years, 2 μm mode-locked fiber laser has been widely developed as an important light source for various significant applications. Worth to note that, with the help of real-time spectroscopy technique, ., time-stretched dispersive Fourier transformation (TS-DFT), various complex nonlinear soliton dynamics have been revealed, such as soliton molecules, soliton explosions and soliton pulsations
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Accurate monitoring of coal pillar deformation based on distributed optical fiber Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-03-18 Hongru Hao, Jing Chai, Yibo Ouyang, Dingding Zhang, Jingbo Gao, Jiaqi Wang, Zhiming Huang
In many structural deformation monitoring applications, determination of the response length of embedded optical fibers is difficult due to the use of strain integration method, which increases the measurement errors. For systematic investigation of the deformation law of coal pillars under mining action, distributed fiber optic technology was used herein to analyze its response length. This study
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Design and signal processing of plastic optical fiber respiratory sensors based on smartphones Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-03-16 Qian-Qian Sun, Chong Zhu, Zhen-Zhang Hu, Ming-Yang Chen
A respiratory signal sensing scheme based on plastic optical fiber and smartphone is proposed. Respiratory signals are achieved by detecting the changes in abdominal circumference caused by the inhalation and exhalation of air from the lungs during breathing. A flexible clamp is prepared based on the 3D printing technology and the changes in abdominal circumference are leading to the lateral distance
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Influence of geometry passive Q-switch based on a nanopowder-polymer on the characteristics of an erbium ring fiber laser Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-03-16 D.P. Sudas, G.G. Yakushcheva, P.I. Kuznetsov
The presented work shows an influence of geometry passive Q-switch based on a nanopowder-polymer on the characteristics of an erbium ring fiber laser. The saturable absorber BiTe was applied to two types of specially prepared samples of thinned sections of optical fiber, and the resulting structures were built into the ring circuit of an erbium fiber laser. In the first case, the surface of the light
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Optical fiber immunosensor based on nanobody for the detection of carcinoembryonic antigen Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-03-13 Wanmei Guo, Yongsen Yu, Chao Xin, Guangyong Jin
We engineered two highly specific, label-free optical fiber immunosensors incorporating innovative nanobodies as biological probes. These sensors, named the graphene oxide (GO) immunosensor and gold nanoparticles (GNP) immunosensor, leverage GO and GNP as bio-sensitive materials for the unlabeled detection of carcinoembryonic antigen (CEA). By employing a layer-by-layer self-assembly technique, we
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Amplified frequency-shifted interferometry fiber loop ringdown glucose sensors using side-polished fiber Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-03-13 Xiong Xie, Yiwen Ou, Jie He, Zuozhun Xie, Yu Han, Yunfan Yang, Xuepei Ma, Chunfu Cheng, Hui Lv
An amplified frequency-shifted interferometry fiber loop ringdown (FSI-FLRD) sensor is proposed for the concentration measurement of glucose solutions. It detects glucose concentrations by measuring the ringdown distance of the continuous light in the fiber ringdown loop (RDL) instead of the ringdown time of the pulsed light in the loop as in traditional FLRD glucose sensors. A bidirectional erbium-doped
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A novel photonic skin sensor based on tapered micro nano fiber structure coated with sodium polyacrylate film Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-03-13 Tao Wu, Shuang Li, Xiajing Zhang, Yueyan Shi, Temitope Emmanuel Komolafe, Xiantong Yu, Liang Zhou, Jiachen Guo
Biomimetic skin sensing devices play an important role in next-generation healthcare, robotics, and bioelectronics. In recent years, biomimetic skin-sensing technologies have gained significant attention due to their broad-ranging utility in the fields of healthcare and automation, and future wearable devices designed for health monitoring, robotic applications, and ultra-precise industrial positioning
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What comes after optical-bypass network? A study on optical-computing-enabled network Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-03-13 Dao Thanh Hai
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Hourglass-Shaped Fiber-Optic Mach-Zehnder interferometer for pressure sensing Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-03-12 Musen Yang, Yunlong Zhu, Jing Ren
A fiber-optic pressure sensor based on an hourglass-shaped structure (HSS) is proposed and demonstrated. A Mach-Zehnder interferometer (MZI) is constructed in the inside cavity of the HSS. The HSS consists of a silica frame and two photoresist diaphragms covered on side holes of the frame. Pressure response of the MZI is analyzed by theoretical calculation, the mechanical deformation of the HSS is
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Fast response multi-segment anti-resonant hollow-core fiber methane sensor at 1687 nm Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-03-11 Grzegorz Gomółka, Adam Filipkowski, Dariusz Pysz, Ryszard Buczyński, Michał Nikodem
Typically, hollow-core fiber (HCF)-based laser gas sensing systems use a single monolithic fiber as a gas cell. This results in a tradeoff between sensitivity which requires long optical fiber and sensor’s response time, that grows with the fiber length. Here we present a simple approach to solve this issue with new all-fiber modular gas cell design. The setup uses modified fiber mating sleeves to
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High accuracy pressure and temperature simultaneous measurement based on forward Brillouin scattering in highly nonlinear fiber Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-03-08 Meng Zhu, Yuangang Lu, Zelin Zhang, Pengkai Liu, Wujun Zhang
An original method for high accuracy pressure and temperature simultaneous sensing is proposed, which is based on forward Brillouin scattering (FBS) spectra induced by high-order radial and torsional-radial acoustic modes in highly nonlinear fiber (HNLF). Firstly, a novel method for selecting suitable sensing fiber with a high FBS gain coefficient is proposed, and an HNLF is selected for high accuracy
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Research on the tunable and switchable erbium-doped fiber laser based on PHB with parallel Lyot filter Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-03-08 Weihua Zhang, Xiang Gao, Dianyou Song, Zhengrong Tong, Junpeng Zhou, Xue Wang, Lifang Xue, Peng Li
In this paper, the tunability and switchability of the proposed multi-wavelength erbium-doped fiber laser (EDFL) with a parallel Lyot filter are verified by experiments. The parallel Lyot filter provides the polarization hole burning (PHB) effect to reduce the mode competition, resulting in a comb spectrum. For the laser cavity, the polarization state can be changed by adjusting the polarization controllers
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Highly accurate diaphragm FBG high pressure gas sensor Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-03-07 Long Chen, Xinglin Tong, Wenzhong Huang, Fanchao Zeng, Chengfei Li, Yuhan Wang, Xuefeng Shi, Chuan Zeng, Zekai Li
Large quantities of flammable and explosive gases are often used in various production processes in the chemical and energy industries. these gases, if leaked or improperly operated, can cause serious production accidents. Therefore, in order to meet the requirement for miniaturized, highly accurate, long-term stable and large-range high pressure sensors for flammable and explosive gases in industrial
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Fiber temperature sensor based on Fabry-Pérot cavity generating optical Vernier effect Opt. Fiber Technol. (IF 2.7) Pub Date : 2024-03-06 Yangmei Liu, Zhongwei Tan, Zhenyu Gu, Si Sun, Shun Lu
A fiber temperature sensor consisting of two cascaded reflective film-fiber-reflective film Fabry-Pérot (FP) cavities is proposed. The lengths of the two FP cavities are similar, but with small differences in their free spectral ranges (FSR) to create Vernier effect. The sensor operates similar to a Vernier caliper, where one FP cavity serves as a reference and the other as a sensing element. Experimental