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Strain response of fibre Bragg grating sensors at cryogenic temperatures

Stephen W James1, Ralph P Tatam1, Andrew Twin2, Mungo Morgan2 and Paul Noonan2

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The temperature and strain response of fibre Bragg grating sensors in a cryogenic environment has been evaluated. The fibre Bragg grating temperature response was found to be nonlinear, decreasing to approximately zero for temperatures less than 100 K. The response to strain was found to be temperature independent.


PACS

42.81.Pa Sensors, gyros

07.10.Pz Instruments for strain, force, and torque

07.20.Mc Cryogenics; refrigerators, low-temperature equipment

42.79.Dj Gratings

Subjects

Instrumentation and measurement

Optics, quantum optics and lasers

Dates

Issue 10 (October 2002)

Received 8 May 2002, accepted for publication 18 July 2002

Published 4 September 2002



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