Optical heterodyne fiber-coil deformation sensor operating in a wide dynamic range

Yoshihiro Ohtsuka; Yoshiaki Nishi; S. Sawae; Satoshi Tanaka

doi:10.1117/12.50004

1 August 1991 Optical heterodyne fiber-coil deformation sensor operating in a wide dynamic range

Yoshihiro Ohtsuka, Yoshiaki Nishi, S. Sawae, Satoshi Tanaka

Proceedings Volume 1572, International Conference on Optical Fibre Sensors in China OFS(C) '91; (1991) https://doi.org/10.1117/12.50004
Event: International Conference on Optical Fibre Sensors in China, 1991, Wuhan, China

Abstract

This paper presents a novel fiber-coil polarimetric sensor using highly birefringent single-mode fiber. A length of fiber is cut at its midpoint; one is rotated by 90 deg. around its axis and spliced to the other. The resultant single fiber is folded at the spliced point and the paired fibers, made in contact with each other along the length, are wound around a flexible cylinder. The coil deformation turns into a change in bending-induced retardation. The retardation measurement is immune from ambient temperature changes. The sensor performance is demonstrated with the sensitivity of the coil deformation 3.2 [deg./mm.turn].

Citation Download Citation

Yoshihiro Ohtsuka, Yoshiaki Nishi, S. Sawae, and Satoshi Tanaka "Optical heterodyne fiber-coil deformation sensor operating in a wide dynamic range", Proc. SPIE 1572, International Conference on Optical Fibre Sensors in China OFS(C) '91, (1 August 1991); https://doi.org/10.1117/12.50004

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