Title :
Distributed sensing in a long-length FBG based on synthesis of optical coherence function with 1-kHz sampling rate
Author :
Kajiwara, Koji ; Hotate, Kazuo
Author_Institution :
Dept. of Electr. Eng. & Inf. Syst., Univ. of Tokyo, Tokyo, Japan
Abstract :
Measurement of Bragg wavelength distribution inside a long-length fiber Bragg grating is demonstrated with a higher sampling speed based on synthesis of optical coherence function to realize a real time sensing. The local reflection spectrum is acquired with 1-kHz sampling rate and the total distribution is measured with 1-Hz measurement speed.
Keywords :
Bragg gratings; distributed sensors; fibre optic sensors; light coherence; optical fibre testing; Bragg wavelength distribution measurement; FBG distributed sensing; frequency 1 kHz; high-sampling speed; local reflection spectrum; long-length fiber Bragg grating; optical coherence function synthesis; Bragg gratings; Coherence; Fiber gratings; High speed optical techniques; Optical interferometry; Optical reflection; Optical sensors; Sampling methods; Velocity measurement; Wavelength measurement; (060.2370) Fiber optics sensors; (060.3735) Fiber Bragg gratings; (280.4788) Optical sensing and sensors;
Conference_Titel :
Lasers and Electro-Optics, 2009 and 2009 Conference on Quantum electronics and Laser Science Conference. CLEO/QELS 2009. Conference on
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-55752-869-8
Electronic_ISBN :
978-1-55752-869-8
