Limitation of absorption-based fiber optic gas sensors by coherent reflections.
We report the noise limitation of fiber optic gas sensors with highly coherent laser sources. Interference between signal and reflected waves causes signal fluctuation in the output; this limits the performance of the sensing system. Sensor resolutions limited by coherent reflections are calculated and compared with experimental results.
Jin
W
W
Stewart
G
G
Philp
W
W
Culshaw
B
B
Demokan
M S
MS