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Proceedings Paper

Optically self-excited miniature fixed-beam resonator sensor
Author(s): Lirong Gu; Jiancheng Ma; Jiazhen Wang
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Paper Abstract

Fixed-beam resonant sensors are reported. Resonant structure may be fabricated using a small beallon tape, fixed at the two ends, forming a beam or bridge. An unmodulated laser beam focussed onto the surface of the beams can set them into vibration at frequencies of a few hundred hertz. Such vibration can easily be detected by analyzing the reflected light from the beams by an electro-optical receiving device. These resonant sensors can measure such physical parameters as temperature and pressure owing to the fact that the frequency of the resonant element corresponds to the variable being measured.

Paper Details

Date Published: 1 August 1991
PDF: 3 pages
Proc. SPIE 1572, International Conference on Optical Fibre Sensors in China OFS(C) '91, (1 August 1991); doi: 10.1117/12.50040
Show Author Affiliations
Lirong Gu, Tsinghua Univ. (China)
Jiancheng Ma, Tsinghua Univ. (China)
Jiazhen Wang, Tsinghua Univ. (China)


Published in SPIE Proceedings Vol. 1572:
International Conference on Optical Fibre Sensors in China OFS(C) '91

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