Title :
Strain response of fibre Bragg grating sensors at cryogenic temperatures
Author :
James, S.W. ; Tatam, R.P. ; Twin, A. ; Morgan, M. ; Noonan, P.
Author_Institution :
Sch. of Eng., Cranfield Univ., Bedford, UK
Abstract :
The temperature and strain responses of fibre Bragg grating (FBG) sensors were assessed in comparison with resistive foil gauges over a temperature range of 300 K to 2.2 K. The temperature sensitivity of the FBGs was observed to decrease significantly with decreasing temperature, offering the prospect of temperature insensitive strain measurement in cryogenic environments. The FBG strain response was found to be independent of temperature.
Keywords :
Bragg gratings; fibre optic sensors; low-temperature techniques; strain sensors; 300 to 2.2 K; cryogenic temperature; fibre Bragg grating sensor; resistive foil gauge; strain response; temperature response; Bragg gratings; Capacitive sensors; Cryogenics; Electromagnetic measurements; Fiber gratings; Optical fiber sensors; Sensor arrays; Strain measurement; Temperature measurement; Temperature sensors;
Conference_Titel :
Optical Fiber Sensors Conference Technical Digest, 2002. Ofs 2002, 15th
Conference_Location :
Portland, OR, USA
Print_ISBN :
0-7803-7289-1
DOI :
10.1109/OFS.2002.1000508
