5 October 2009 Suppression of cable induced noise in an interferometric sensor system
Author Affiliations +
Proceedings Volume 7503, 20th International Conference on Optical Fibre Sensors; 75034Q (2009); doi: 10.1117/12.835435
Event: 20th International Conference on Optical Fibre Sensors, 2009, Edinburgh, United Kingdom
Abstract
Vibrations in the lead cables is known to cause noise in interferometric sensor systems, through modulation of the polarization state of the transmitted light, and through Doppler stretching of the interrogating signals. We demonstrate effective methods for suppression of both these noise sources. The polarization modulation sensitivity is suppressed by 36 dB by using a polarization resolved interrogation technique. The sensitivity to Doppler shift is suppressed by 22 dB by using a reference interferometer that is interrogated through the same lead fiber.
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ole Henrik Waagaard, Erlend Rønnekleiv, Stig Forbord, Dag Thingbø, "Suppression of cable induced noise in an interferometric sensor system", Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 75034Q (5 October 2009); doi: 10.1117/12.835435; https://doi.org/10.1117/12.835435
PROCEEDINGS
4 PAGES


SHARE
KEYWORDS
Sensors

Polarization

Interferometers

Lead

Doppler effect

Interferometry

Fiber Bragg gratings

Back to Top