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

fYear

2009

fDate

2-4 June 2009

Firstpage

1

Lastpage

2

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;

fLanguage

English

Publisher

ieee

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

Type

conf

Filename

5224573