Results 21 to 30 of about 1,583 (160)

Optical frequency domain reflectometry: A review [PDF]

2009 11th International Conference on Transparent Optical Networks, 2009
In this paper, we discuss the operation principles, challenges and application areas of optical frequency domain reflectometry technique. A review of OFDR systems is given considering both Incoherent-OFDR and Coherent-OFDR groups. Results obtained by different research groups are compared in terms of performance characteristics, and future perspectives.
Yüksel, Kıvılcım, Wuilpart, Marc, Moeyaert, Véronique, Mégret, Patrice   +3 more
openaire   +2 more sources

Dynamic Range Enhanced Optical Frequency Domain Reflectometry Using Dual-Loop Composite Optical Phase-Locking

IEEE Photonics Journal, 2021
We report on a dynamic range enhanced optical frequency domain reflectometry distributed backscattering interrogator based on dual-loop composite optical phase-locked loop (OPLL).
Yinxia Meng, Weilin Xie, Yuxiang Feng, Jiang Yang, Ling Zhang, Yuanshuo Bai, Wei Wei, Yi Dong   +7 more
doaj   +1 more source

Recent Advancements in Rayleigh Scattering-Based Distributed Fiber Sensors

Advanced Devices & Instrumentation, 2021
Recently, Rayleigh scattering-based distributed fiber sensors have been widely used for measurement of static and dynamic phenomena such as temperature change, dynamic strain, and sound waves.
Xiaoyi Bao, Yuan Wang
doaj   +1 more source

Characterization of Laser Frequency Stability by Using Phase-Sensitive Optical Time-Domain Reflectometry

Photonics, 2023
A new method to measure laser phase noise and frequency stability based on the phase-sensitive optical time-domain reflectometry is proposed. In this method, the laser under test is utilized in a phase-sensitive optical time-domain reflectometer, which ...
Danil M. Bengalskii, Danil R. Kharasov, Edgard A. Fomiryakov, Sergei P. Nikitin, Oleg E. Nanii, Vladimir N. Treshchikov   +5 more
doaj   +1 more source

Numerical Analysis and Recursive Compensation of Position Deviation for a Sub-Millimeter Resolution OFDR

Sensors, 2020
We analyze the source of the position deviation and propose a demodulation recursive compensation algorithm to ensure a sub-millimeter resolution in improved optical frequency domain reflectometry.
Yueying Cheng, Mingming Luo, Jianfei Liu, Nannan Luan   +3 more
doaj   +1 more source

A Phase-Sensitive Optical Time Domain Reflectometry with Non-Uniform Frequency Multiplexed NLFM Pulse

Sensors, 2023
In the domain of optical fiber distributed acoustic sensing, the persistent challenge of extending sensing distances while concurrently improving spatial resolution and frequency response range has been a complex endeavor.
Zhengyang Li, Yangan Zhang, Xueguang Yuan, Zhenyu Xiao, Yuan Zhang, Yongqing Huang   +5 more
doaj   +1 more source

Application of phosphate doped fibers for OFDR dosimetry

Results in Physics, 2016
We employ phosphate doped optical fibers for distributed dosimetry based on Optical Frequency Domain Reflectometry (OFDR) and demonstrate the effect of limited Integrated Insertion Loss Dynamic Range (ILDR) on the system performance.
A.V. Faustov, A.V. Gusarov, P. Mégret, M. Wuilpart, A.V. Zhukov, S.G. Novikov, V.V. Svetukhin, A.A. Fotiadi   +7 more
doaj   +1 more source

A Universal Phase Error Analysis for Optical Frequency Tuning Lasers Utilized in Fiber Sensing with OFDR

Photonics, 2022
As optical fiber sensing has attracted increasing attention due to its advantages such as high accuracy, low costs, and stability, its optical source judgment has become an attractive issue by which to characterize its performance.
Zheyi Yao, Zhewen Yuan, Guohua Gu, Qian Chen, Xiubao Sui   +4 more
doaj   +1 more source

High-Spatial-Resolution Dynamic Strain Measurement Based on Brillouin Optical Correlation-Domain Sensors

Photonics, 2023
Brillouin-scattering-based sensors have been widely applied in distributed temperature or strain measurement in recent 20 years. Brillouin optical correlation-domain technology has extensive development and application prospects because of its millimeter-
Yahui Wang, Jing Chen, Jinglian Ma, Lintao Niu, Mingjiang Zhang   +4 more
doaj   +1 more source

Two-dimensional distributed strain sensing with an Archimedean spiral arrangement in optical frequency domain reflectometry

Nanotechnology and Precision Engineering, 2018
We demonstrate a distributed two-dimensional (2D) strain-sensing system in optical frequency domain reflectometry (OFDR) with an Archimedean spiral arrangement of the sensing fiber.
Yamei Guo, Zhenyang Ding, Kun Liu, Junfeng Jiang, Chenhuan Wang, Tiegen Liu   +5 more
doaj   +1 more source