Time division multiplexing optical time domain reflectometry by directly synthesizing heterodyne intermediate frequency

Xuping Zhang; Yuejiang Song; Lidong Lu; Fan Zhu

doi:10.1117/12.974807

7 November 2012 Time division multiplexing optical time domain reflectometry by directly synthesizing heterodyne intermediate frequency

Xuping Zhang, Yuejiang Song, Lidong Lu, Fan Zhu

Author Affiliations +

Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 84219R (2012) https://doi.org/10.1117/12.974807
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China

Abstract

A time division multiplexing optical time domain reflectometry (TDM-OTDR) based on multi-frequency probe light and directly synthesizing heterodyne intermediate frequencies (IFs) is proposed and experimentally demonstrated. Five time division multiplexing probe frequencies are obtained by synchronous control of an arbitrary waveform generator and a phase modulator. Experimental results achieve 6.5dB dynamic range enhancement, compared with conventional coherent OTDR.

Citation Download Citation

Xuping Zhang, Yuejiang Song, Lidong Lu, and Fan Zhu "Time division multiplexing optical time domain reflectometry by directly synthesizing heterodyne intermediate frequency", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84219R (7 November 2012); https://doi.org/10.1117/12.974807

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