Strain isolated optical fibre bragg grating sensor

Details Strain isolated optical fibre bragg grating sensor Strain isolated optical fibre bragg grating sensor

1998-06-19

2000-09-26

Spyrou, Cassandra

Optical waveguides

Optical waveguide sensor

385 37, 25022714, 25022727, 356 355, 356345, 73800, 73770, G02B 600, G02B 634, G01J 104, G01L 124

Patent

active

061252166

ABSTRACT:
A strain isolated optical fibre Bragg grating sensor (1) has an optical fibre (2) provided at or adjacent one end (2a) with the Bragg grating (3). An open mouth cap (4) surrounds the fibre end (2a) and region provided with the Bragg grating (3) at a spacing from the fibre, fibre end and Bragg grating. The cap (4) is sealed to the fibre (2) at the open mouth at a side of the grating (3) remote from the fibre end (2a). The cap (4) is made from a low Young's modulus material and is operable to isolate the grating (3) from strain.

REFERENCES:
patent: 5361130 (1994-11-01), Kersey et al.
patent: 5394488 (1995-02-01), Fernald et al.
patent: 5461926 (1995-10-01), Bobb et al.

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