DocumentCode :
1099190
Title :
Demodulation of interferometric sensors using a fiber-optic passive quadrature demodulator
Author :
Stowe, David W. ; Hsu, Tsung-yuan
Author_Institution :
Gould Labs., Rolling Meadows, IL, USA
Volume :
1
Issue :
3
fYear :
1983
fDate :
9/1/1983 12:00:00 AM
Firstpage :
519
Lastpage :
523
Abstract :
The passive quadrature demodulator (PQD) eliminates the phase stretcher and feedback electronics frequently used in fiber interferometric sensors by passively extracting the desired signal using two distinct interferometers which differ in phase by 
. A fusion technique is described to fabricate a fiber PQD which is sufficiently stable with respect to temperature, polarization, and wavelength to maintain the sensitivity of interferometric sensors constant to 0.25 dB.
. A fusion technique is described to fabricate a fiber PQD which is sufficiently stable with respect to temperature, polarization, and wavelength to maintain the sensitivity of interferometric sensors constant to 0.25 dB.Keywords :
Optical fiber transducers; Optical interferometry; Optical modulation/demodulation; Demodulation; Interferometers; Magnetic sensors; Optical feedback; Optical fiber couplers; Optical fiber polarization; Optical fiber sensors; Optical interferometry; Optical sensors; Temperature sensors;
fLanguage :
English
Journal_Title :
Lightwave Technology, Journal of
Publisher :
ieee
ISSN :
0733-8724
Type :
jour
DOI :
10.1109/JLT.1983.1072135
Filename :
1072135
Link To Document :
