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Proceedings Paper

Simplex coded polarization optical time domain reflectometry system
Author(s): Chaodong Wang; Lihai Liu; Wenbo Chen; Ruolin Liao; Ming Tang; Songnian Fu
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Paper Abstract

In polarization optical time domain reflectometry (POTDR) system, the performance of polarimetric measurement is largely constrained by the low signal to noise ratio (SNR) due to the weak Rayleigh backscattering and the degradation of the degree of polarization (DOP) of signal light. It will be indispensable to improve the SNR without sacrificing the DOP of backscattered signal for a sufficient dynamic range. In this paper, a Simplex coded POTDR (sc-POTDR) system was proposed and demonstrated. The relationships between the signal’s DOP and coding length/bit width were studied. Both numerical simulations and experiments show that the signal’s DOP has nothing to do with the length of Simplex code and only reducing the bit width can suppress the temporal depolarization effect. Applying 511-bit Simplex codes, a coding gain of 10.125dB has been demonstrated.

Paper Details

Date Published: 23 April 2017
PDF: 4 pages
Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103235Y (23 April 2017); doi: 10.1117/12.2263180
Show Author Affiliations
Chaodong Wang, China Railway Siyuan Survey and Design Group Co., Ltd. (China)
Huazhong Univ. of Science and Technology (China)
Lihai Liu, China Railway Siyuan Survey and Design Group Co., Ltd. (China)
Wenbo Chen, Huazhong Univ. of Science and Technology (China)
Ruolin Liao, Huazhong Univ. of Science and Technology (China)
Ming Tang, Huazhong Univ. of Science and Technology (China)
Songnian Fu, Huazhong Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 10323:
25th International Conference on Optical Fiber Sensors
Youngjoo Chung; Wei Jin; Byoungho Lee; John Canning; Kentaro Nakamura; Libo Yuan, Editor(s)

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