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Proceedings Paper

Suppression of cable induced noise in an interferometric sensor system
Author(s): Ole Henrik Waagaard; Erlend Rønnekleiv; Stig Forbord; Dag Thingbø
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Paper 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.

Paper Details

Date Published: 5 October 2009
PDF: 4 pages
Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 75034Q (5 October 2009); doi: 10.1117/12.835435
Show Author Affiliations
Ole Henrik Waagaard, Optoplan AS (Norway)
Erlend Rønnekleiv, Optoplan AS (Norway)
Stig Forbord, Optoplan AS (Norway)
Dag Thingbø, Optoplan AS (Norway)

Published in SPIE Proceedings Vol. 7503:
20th International Conference on Optical Fibre Sensors
Julian D. C. Jones, Editor(s)

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