Impact of EOM extinction ratio on the Brillouin frequency measurement of distributed fiber optic sensors

Shahraam Afshar V.; Graham A. Ferrier; Xiaoyi Bao; Liang Chen

doi:10.1117/12.543842

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15 December 2003 Impact of EOM extinction ratio on the Brillouin frequency measurement of distributed fiber optic sensors

Shahraam Afshar V., Graham A. Ferrier, Xiaoyi Bao, Liang Chen

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Proceedings Volume 5260, Applications of Photonic Technology 6; (2003) https://doi.org/10.1117/12.543842
Event: Applications of Photonic Technology, 2003, Quebec City, Québec, Canada

Abstract

The extinction ratio of an Electro Optic Modulator (EOM) limits the accuracy of BOTDA measurement of Brillouin-based fiber optic sensors. An EOM with a finite extinction ratio yeilds Brillouin frequency peaks from outside the spatial resolution. This result in confusion in locating the true strain and temperature and error in detecting the Brillouin frequency. The effects of different parameters such as extinction ratio, pulse power and pump power wil be discussed.

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Shahraam Afshar V., Graham A. Ferrier, Xiaoyi Bao, and Liang Chen "Impact of EOM extinction ratio on the Brillouin frequency measurement of distributed fiber optic sensors", Proc. SPIE 5260, Applications of Photonic Technology 6, (15 December 2003); https://doi.org/10.1117/12.543842

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