Limitation of absorption-based fiber optic gas sensors by coherent reflections
- 1 September 1997
- journal article
- Published by Optica Publishing Group in Applied Optics
- Vol. 36 (25) , 6251-6255
- https://doi.org/10.1364/ao.36.006251
Abstract
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.Keywords
This publication has 4 references indexed in Scilit:
- Source-noise limitation of fiber-optic methane sensorsApplied Optics, 1995
- Methane and carbon dioxide sensing using a DFB laser diode operating at 1.64 μmElectronics Letters, 1993
- Remote sensing of methane gas by differential absorption measurement using a wavelength tunable DFB LDIEEE Photonics Technology Letters, 1991
- Noise power spectra of optical two-beam interferometers induced by the laser phase noiseJournal of Lightwave Technology, 1986