Reduction of crosstalk in inline sensor arrays using inverse scattering

Ole Henrik Waagaard; Erlend Rønnekleiv; Stig Forbord; Dag Thingbø

doi:10.1117/12.786176

16 May 2008 Reduction of crosstalk in inline sensor arrays using inverse scattering

Ole Henrik Waagaard, Erlend Rønnekleiv, Stig Forbord, Dag Thingbø

Proceedings Volume 7004, 19th International Conference on Optical Fibre Sensors; 70044Z (2008) https://doi.org/10.1117/12.786176
Event: 19th International Conference on Optical Fibre Sensors, 2008, Perth, WA, Australia

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.

Citation Download Citation

Ole Henrik Waagaard, Erlend Rønnekleiv, Stig Forbord, and Dag Thingbø "Reduction of crosstalk in inline sensor arrays using inverse scattering", Proc. SPIE 7004, 19th International Conference on Optical Fibre Sensors, 70044Z (16 May 2008); https://doi.org/10.1117/12.786176

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