Title :
Differential measurement technique for optical fibre sensors
Author_Institution :
Telecommun. Res. Labs., Edmonton, Alta., Canada
Abstract :
A differential measurement is demonstrated for intensity-modulation fibre sensors that achieves high rejection of interference from loss in the fibre downlead. The sensor is placed in a fibre resonator and interrogated at two subcarrier frequencies.
Keywords :
fibre optic sensors; Q-modulation; differential measurement; high rejection of interference; intensity-modulation fibre sensors; intrinsically safe sensors; optical fibre sensors; subcarrier frequencies;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19911357
