Title :
Simultaneous strain and temperature sensing employing a photogenerated polarisation coupler and low-order modes in an elliptically cored optical fibre
Author :
Kanellopoulos, S.E. ; Handerek, V.A.
Author_Institution :
Dept. of Electron. & Electr. Eng., King´s Coll., London
fDate :
10/13/1994 12:00:00 AM
Abstract :
A new technique is demonstrated for simultaneous strain and temperature sensing using a fibre polarisation coupler in an elliptically cored optical fibre carrying only a few low-order modes. The applied strain and temperature can be determined from the effect that they have on the resonant coupling wavelengths for the orthogonal polarisation states of the fundamental and first higher order modes
Keywords :
fibre optic sensors; light polarisation; optical couplers; photorefractive effect; strain measurement; temperature measurement; elliptically cored optical fibre; fibre polarisation coupler; fundamental mode; low-order modes; orthogonal polarisation states; photogenerated polarisation coupler; resonant coupling wavelengths; simultaneous strain/temperature sensor; strain sensing; temperature sensing;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19941196
