Optically self-excited miniature fixed-beam resonator sensor

Lirong Gu; Jiancheng Ma; Jiazhen Wang

doi:10.1117/12.50040

1 August 1991 Optically self-excited miniature fixed-beam resonator sensor

Lirong Gu, Jiancheng Ma, Jiazhen Wang

Proceedings Volume 1572, International Conference on Optical Fibre Sensors in China OFS(C) '91; (1991) https://doi.org/10.1117/12.50040
Event: International Conference on Optical Fibre Sensors in China, 1991, Wuhan, China

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.

Citation Download Citation

Lirong Gu, Jiancheng Ma, and Jiazhen Wang "Optically self-excited miniature fixed-beam resonator sensor", Proc. SPIE 1572, International Conference on Optical Fibre Sensors in China OFS(C) '91, (1 August 1991); https://doi.org/10.1117/12.50040

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