Optical fibre coil assemblies

Details Optical fibre coil assemblies Optical fibre coil assemblies

1991-12-03

1993-08-17

Lee, John D.

Optical waveguides

Optical waveguide sensor

Including physical deformation or movement of waveguide

385147, G02B 610

Patent

active

052376320

ABSTRACT:
An optical fiber coil assembly comprising two optically interconnected optical fiber coils or coil parts (22, 23) rigidly supported in predetermined positional relationship by respective rigid support means so constructed and arranged that static or quasi-static pressure (P) applied to the assembly produces a decrease in the path length of one of the coils or coil parts, and an increase in the path length of the other.

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patent: 4525818 (1985-06-01), Clelo et al.
patent: 4534222 (1985-08-01), Finch et al.
patent: 4799202 (1989-01-01), Assard
patent: 4825424 (1989-04-01), Lamb et al.
patent: 4893930 (1990-01-01), Garrett et al.
patent: 4951271 (1990-08-01), Garrett et al.
patent: 4959539 (1990-09-01), Hofler et al.
K. Oka, T. Takeda and Y. Ohtsuka, "Fiber-Optic Dual-Coil Sensor for Simultaneous Measurements of Mechanical Displacement and Temperature Change,"; Sensors and Actuators, A21-23 (1990) pp. 438-441; (Takeda and Ohtsuka) e.g. FIG. 2.

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