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Proceedings Paper

The effect of optical phase on the Brillouin spectrum in the distributed sensor system
Author(s): Xiaoyi Bao; Yidun Wan; Lufan Zou; Liang Chen
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Paper Abstract

Because of the phase modulation (PM) and amplitude modulation (AM) of the probe signal from the electric optical modulator (EOM), the Brillouin gain/loss spectrum becomes asymmetric. The central Brillouin frequency is shifted from that of AM pulse. The maximum extinction ratio of the EOM is limited to ~29 cB for power splitting ratio of 51% to 49%. The PM also induces sub-peaks in the Brillouin spectrum due to the interaction of phonon field and AM/PM based probe beam. The sub-peaks is enhanced when the beat frequency of pump and probe beam is off from the Brillouin frequency.

Paper Details

Date Published: 23 May 2005
PDF: 4 pages
Proc. SPIE 5855, 17th International Conference on Optical Fibre Sensors, (23 May 2005); doi: 10.1117/12.624249
Show Author Affiliations
Xiaoyi Bao, Univ. of Ottawa (Canada)
Yidun Wan, Univ. of Ottawa (Canada)
Lufan Zou, Univ. of Ottawa (Canada)
Liang Chen, Univ. of Ottawa (Canada)


Published in SPIE Proceedings Vol. 5855:
17th International Conference on Optical Fibre Sensors
Marc Voet; Reinhardt Willsch; Wolfgang Ecke; Julian Jones; Brian Culshaw, Editor(s)

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