30 January 2012 External feedback DFB fibre laser sensors in the weak reflection regime
Author Affiliations +
Proceedings Volume 8351, Third Asia Pacific Optical Sensors Conference; 83512Z (2012) https://doi.org/10.1117/12.916036
Event: Asia Pacific Optical Sensors Conference, 2012, Sydney, Australia
Abstract
An analysis of the effect of weak feedback on Bragg grating fibre laser output parameters is presented and a simple sensor arrangement based on monitoring intensity fluctuations of a DFB fibre laser with a weak external reflector is considered. Calculations suggest that it may be possible, under certain conditions, to resolve changes to the length of the external cavity at close to the thermal noise limit. This introduces the possibility of achieving strain resolution in the sub-picostrain regime in the low frequency domain where resolution of conventional fibre laser sensors is limited by 1/f noise.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Scott Foster, Scott Foster, } "External feedback DFB fibre laser sensors in the weak reflection regime", Proc. SPIE 8351, Third Asia Pacific Optical Sensors Conference, 83512Z (30 January 2012); doi: 10.1117/12.916036; https://doi.org/10.1117/12.916036
PROCEEDINGS
7 PAGES


SHARE
Back to Top