Results 11 to 20 of about 1,583 (160)
Incoherent Optical Frequency-Domain Reflectometry Based on Homodyne Electro-Optic Downconversion for Fiber-Optic Sensor Interrogation. [PDF]
Sensors (Basel), 2019 Fiber-optics sensors using interrogation based on incoherent optical frequency-domain reflectometry (I-OFDR) offer benefits such as the high stability of interference in the radio-frequency (RF) domain and the high SNR due to narrowband RF detection. One
Clement J +3 more
europepmc +2 more sources
Frequency-comb enabled spectrum-correlation reflectometry for distributed fiber-optic sensing. [PDF]
Light Sci ApplDistributed fiber-optic sensing has become an indispensable tool for large-scale structural and environmental monitoring, where spectral interrogation of backscattering light enables high-precision quantitative measurement of external perturbations ...
Lin Z +5 more
europepmc +2 more sources
Ghost-peak-based estimation of modulation amplitude in optical correlation-domain reflectometry. [PDF]
Sci RepReliable and efficient evaluation of the modulation amplitude is essential for achieving accurate spatial resolution in optical correlation-domain reflectometry (OCDR).
Motoda K, Mizuno Y.
europepmc +2 more sources
Principle and Application of the C-OTDR
Guangtongxin yanjiu, 2022 The traditional Optical Time Domain Reflectometry (OTDR) technology uses back Rayleigh scattering power for fiber detection. In transmission lines with optical amplifier, Erbium-Doped Fiber Amplifiers (EDFA) are mostly used to compensate for the loss of ...
LIU Zhong-hua +3 more
doaj +3 more sources
Journal of Electronic Science and Technology, 2021 A nonlinearity-compensation-free optical frequency domain reflectometry (OFDR) scheme is proposed and experimentally demonstrated based on the electrically-controlled optical frequency sweep.
Fan Yang +4 more
doaj +1 more source
Analyzing Distributed Vibrating Sensing Technologies in Optical Meshes
Micromachines, 2022 Hundreds of kilometers of optical fibers are installed for optical meshes (OMs) to transmit data over long distances. The visualization of these deployed optical fibers is a highlighted issue because the conventional procedure can only measure the ...
Saifur Rahman +9 more
doaj +1 more source
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 +3 more
openaire +2 more sources
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 +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
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 +5 more
doaj +1 more source