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Proceedings Paper

Reduction of crosstalk in inline sensor arrays using inverse scattering
Author(s): Ole Henrik Waagaard; Erlend Rønnekleiv; Stig Forbord; Dag Thingbø
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Paper Abstract

Suppression of crosstalk in an FBG-based serially multiplexed interferometric sensor array is demonstrated by employing the layer peeling inverse scattering algorithm. A polarization resolved impulse response (array reflection Jones matrix versus time) is measured using dual pulse heterodyne interrogation with varying combinations of polarization states in the interrogating pulse pair, and used as input to the layer peeling algorithm. < -40 dB crosstalk is achieved with > 97% confidence in a sensor array with 5 % FBG reflectivity. This is a 15-20 dB improvement compared to interrogation without inverse scattering.

Paper Details

Date Published: 16 May 2008
PDF: 4 pages
Proc. SPIE 7004, 19th International Conference on Optical Fibre Sensors, 70044Z (16 May 2008); doi: 10.1117/12.786176
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. 7004:
19th International Conference on Optical Fibre Sensors
David Sampson; Stephen Collins; Kyunghwan Oh; Ryozo Yamauchi, Editor(s)

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