Title :
Sagnac topology for a self-referencing fiber optic sensor
Author :
Baptista, J.M. ; Santos, J.L. ; Lage, A.S.
Author_Institution :
Inst. Superior de Engenharia do Porto, Portugal
Abstract :
The sensor described is based on a Sagnac topology in reflection and uses the properties of its frequency response in order to obtain a self-referenced signal proportional to the measurand signal. In terms of sensitivity the best result was found for K2≈0.184 being possible to address the full range of the R parameter. Considering K2=0.2 and an off-resonance frequency of 3.25 MHz, a fairly good compromise between sensor sensitivity and sensor linearity is possible
Keywords :
fibre optic sensors; light interferometers; optical transfer function; Sagnac topology in reflection; fiber optic sensor; frequency response; linearity; self-referenced signal; sensitivity; transfer function; Frequency; Optical attenuators; Optical fiber sensors; Optical modulation; Optical reflection; Optical refraction; Optical sensors; Optical variables control; Sagnac interferometers; Topology;
Conference_Titel :
LEOS '99. IEEE Lasers and Electro-Optics Society 1999 12th Annual Meeting
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-5634-9
DOI :
10.1109/LEOS.1999.813574
