Adaptive Fiber-Optical Sensor System for Pico-Strain and Nano-Displacement Metrology

Abstract:

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Adaptive fiber-optic interferometer which is based on multimode optical fiber as a sensor and diffusion holograms recorded in semiconductor photorefractive crystal CdTe:V without any electric field is developed. The interferometer sensitivity achieved is only 5.7 times less then highest sensitivity which is possible only in non-adaptive lossless classical interferometer. A practical detection limit is equal to Hz W nm 10 0 3 5 − × . , which allows to broadband detecting of an object’s displacement of order 0.2 nm or deformation of order 2 pε with using light sources having only 5 mW optical power.

Info:

Periodical:

Key Engineering Materials (Volumes 381-382)

Edited by:

Wei Gao, Yasuhiro Takaya, Yongsheng Gao and Michael Krystek

Pages:

61-64

DOI:

10.4028/www.scientific.net/KEM.381-382.61

Citation:

R. V. Romashko et al., "Adaptive Fiber-Optical Sensor System for Pico-Strain and Nano-Displacement Metrology", Key Engineering Materials, Vols. 381-382, pp. 61-64, 2008

Online since:

June 2008

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Price:

$35.00

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