The Research of Polarization Feedback Control System Based on Double Mach-Zehnder Interferometer

Abstract:

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Polarization induced signal fading always has an influence up on the visibility of the interference stripe and the accuracy of system location in the distributed optical fiber oil &gas pipeline leak detection system. Base on distributed sensor system polarization characteristic, this paper analyses the visibility of the interference stripe with the changing of polarization. Designed a feedback control system based on double Mach-Zehnder is used to eliminate the input light polarization fading. This system can effectively suppress the polarization fading in fiber optical sensor, making interferometer fringe visibility tends to 1 and the equilibrium state of input light polarization always closes to the best input sate of interferometer.

Info:

Periodical:

Advanced Materials Research (Volumes 308-310)

Edited by:

Jian Gao

Pages:

1751-1754

DOI:

10.4028/www.scientific.net/AMR.308-310.1751

Citation:

Y. T. Wang et al., "The Research of Polarization Feedback Control System Based on Double Mach-Zehnder Interferometer", Advanced Materials Research, Vols. 308-310, pp. 1751-1754, 2011

Online since:

August 2011

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Price:

$35.00

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