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BOTDA using OFDM channel estimation

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arxiv 1702.02291 v1 pith:WN2AZUKO submitted 2017-02-08 physics.ins-det physics.optics

BOTDA using OFDM channel estimation

Can Zhao , Ming Tang , Liang Wang , Hao Wu , Zhiyong Zhao , Yunli Dang , Jiadi Wu , Songnian Fu
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Deming Liu Perry Ping Shum
This is my paper
classification physics.ins-det physics.optics
keywords botdabrillouinfrequencychannelestimationim-dd-oofdmofdmoptical
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A novel Brillouin optical time-domain analysis (BOTDA) system is proposed using intensity-modulated optical orthogonal frequency division multiplexing probe signal and direct detection (IM-DD-OOFDM) without frequency sweep operation. The influence of peak to average power ratio (PAPR) of OFDM probe signal on the recovery of Brillouin gain spectrum (BGS) is analyzed in theory and experiment. The complex BGS is reconstructed by channel estimation algorithm and Brillouin frequency shift (BFS) is located by curve fitting of intensity spectrum. The IM-DD-OOFDM BOTDA is demonstrated experimentally with 25m spatial resolution over 2 km standard single mode fiber.

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