Title :
Accurate measurement of the Brillouin frequency shift in optical fibers using a doubly phase-modulated probe light
Author :
Tsuji, Kenichiro ; Kim, Jungmin ; Oiwa, Masaki ; Onodera, Noriaki ; Saruwatari, Masatoshi
Author_Institution :
Dept. of Commun. Eng., Nat. Defense Acad., Yokosuka
Abstract :
We propose an accurate measurement method of the Brillouin frequency shift in optical fibers applicable for distributed strain/temperature measurement, using a doubly phase-modulated probe light. Its accuracy and the usefulness are experimentally demonstrated.
Keywords :
Brillouin spectra; fibre optic sensors; measurement by laser beam; optical modulation; phase modulation; strain measurement; strain sensors; temperature measurement; temperature sensors; Brillouin frequency shift; Brillouin-based fiber-optic sensors; accurate measurement method; doubly phase-modulated probe light; strain measurement; temperature measurement; Frequency measurement; Frequency modulation; Optical fibers; Optical filters; Optical modulation; Optical pumping; Optical sensors; Optical variables control; Phase measurement; Probes;
Conference_Titel :
Opto-Electronics and Communications Conference, 2008 and the 2008 Australian Conference on Optical Fibre Technology. OECC/ACOFT 2008. Joint conference of the
Conference_Location :
Sydney
Print_ISBN :
978-0-85825-807-5
Electronic_ISBN :
978-0-85825-807-5
DOI :
10.1109/OECCACOFT.2008.4610470
