In this paper,a novel birefringence measurement method through the Rayleigh backscattered lightwave within single-mode fiber is proposed,using a single chirped-pulse with arbitrary state of polarization.Numerical anal...
Erratum to:Distributed Fiber Birefringence Measurement Using Pulse-Compression Ф-OTDR The original article unfortunately contained a mistake.Figures 4 and 8 are not clear.The figures in original article and in correc...
This work is financed by National Funds through the Portuguese funding agency,FCT-“Fundação para a Ciência e a Tecnologia”under Grant No.UID/EEA/50014/2019.
The proposed technique demonstrates a fiber ring resonator interrogated by an optical time domain reflectometer(OTDR),for intensity sensing.By using this methodology,a cavity round trip time of 2.85ms was obtained.For...
This work was supported in part by the National Natural Science Foundation of China (Gram No. 61735031), Natural Science Foundation of Hubei Province of China (Grant No. 2018CFA056), and the Excellent Dissertation Cultivation Funds of Wuhan University of Technology (Grant No. 2017-YS-057).
This article presents a high-speed distributed vibration sensing based on Mach-Zehnder-OTDR (optical time-domain reflectometry). Ultra-weak fiber Bragg gratings (UWFBG), whose backward light intensity is 2-4 order...
The authors gratefully acknowledge the supports provided for this research by Youth Foundation (Grant No. 61301275), Major Instrument Special Program (Grant No. 41527805), the Major Program (Grant No. 61290312) of the National Science Foundation of China (NSFC), and the fund of State Grid Corporation of China: Research on distributed multi-parameter sensing and measurement control technology for electric power optical fiber communication networks (Grant No. 5455HT160014). This work is also supported by Program for Changjiang Scholars and Innovative Research Team in University (PCSIRT, IRT1218) and the 111 Project (B14039).
High sensitivity of a distributed optical-fiber vibration sensing (DOVS) system based on the phase-sensitivity optical time domain reflectometry (Ф-OTDR) technology also brings in high nuisance alarm rates (NARs...
In a phase-sensitive optical-time domain reflectometry (Ф-OTDR) system, the challenge for dynamic strain measurement lies in large intensity fluctuations from trace to trace. The intensity fluctuation caused by sto...
This work is supported by the National Nature Science Foundation of China (NSFC) under grants (61290312 and 61205048), the PCSIRT (IRT1218), and the 111 Project (B14039).
A hybrid phase-sensitive optical time domain reflectometry (φ-OTDR) and Brillouin optical time domain reflectometry (B-OTDR) system which can realize simultaneous measurement of both dynamic vibration and static ...
This paper presents a long-range displacement measurement method by using a single- multi-single mode (SMS) fiber structure, attached to a flexible plate between two permanent poles and the optical time domain refle...
This work presented a demonstration of the potential for a fiber based cavity ring-down (CRD) using an optical time-domain reflectometer (OTDR). The OTDR was used to send the impulses down into about 20km of a sta...
In this paper, we propose a Fresnel reflection-based optical fiber sensor system for remote refractive index measurement using the optical time domain reflectometry technique as an interrogation method. The surroundin...