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Proceedings Paper

Multipoint vibration sensing using fiber Bragg gratings and optical frequency domain reflectometry.
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Paper Abstract

We present multipoint vibration sensing using fiber Bragg gratings and optical frequency domain refrectometry (OFDR). In OFDR based method, the maximum number of arrayed sensor can be few thousands and the measurement time is determined by wavelength scanning rate of a light source. In our sensor system, a laser diode is used as a wavelength scanning light source. Lasing wavelength of a laser diode can be modulated by changing its injection current. The injection current can be precisely modulated at high frequency up to 100 kHz using a laser-diode controller and wavelength scanning can be then easily achieved with a laser diode.

Paper Details

Date Published: 1 July 2015
PDF: 4 pages
Proc. SPIE 9655, Fifth Asia-Pacific Optical Sensors Conference, 96550U (1 July 2015); doi: 10.1117/12.2185268
Show Author Affiliations
Atsushi Wada, National Defense Academy (Japan)
Satoshi Tanaka, National Defense Academy (Japan)
Nobuaki Takahashi, National Defense Academy (Japan)


Published in SPIE Proceedings Vol. 9655:
Fifth Asia-Pacific Optical Sensors Conference
Byoungho Lee; Sang-Bae Lee; Yunjiang Rao, Editor(s)

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