Temporal Depolarization Suppressed POTDR System for Quasi-Distributed Instantaneous Intrusion Sensing and Vibration Frequency Measurement
Temporal Depolarization Suppressed POTDR System for Quasi-Distributed Instantaneous Intrusion Sensing and Vibration Frequency Measurement
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用于准分布式瞬时入侵传感和振动频率测量的时间去极化抑制 POTDR 系统
DOI：
10.1109/jphot.2016.2536365
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发表时间：
2016-03
影响因子：
2.4
通讯作者：
Tang Ming
中科院分区：
文献类型：
--
作者：
Wang Chaodong;Zhou Yaling;Wu Hao;Zhao Can;Tang Jianguan;Zhou Ciming;Fu Songnian;Shum Ping;Tang Ming
从理论上研究了偏振光时域反射仪(POTDR)系统中时间退偏效应的机理。首先，推导了不完全POTDR系统的动态范围与后向散射光信号偏振度之间的关系。其次，通过引入准分布菲涅耳反射，提出了一种时间去偏抑制的POTDR系统。最后，通过数值模拟和实验验证了该系统的DOP分布。结果表明，可以显著抑制时间去极化效应，以保持足够的动态范围，从而实现快速、准确的偏振测量。在菲涅耳反射的帮助下，接收的光信号的信噪比(SNR)也得到了改善。利用高DOP和改善的信噪比，无需进行任何数据平均，即可实现光纤链路上的瞬时入侵检测和精确的振动频率测量。
Theoretical investigation on the mechanism of temporal depolarization effect in a polarization optical time-domain reflectometry (POTDR) system is conducted. First, the relationship between the dynamic range of the incomplete POTDR system and the degree of polarization (DOP) of the backscattered optical signal is derived. Second, a temporal depolarization suppressed POTDR system is proposed by introducing quasi-distributed Fresnel reflections. Third, the DOP distribution of the proposed system is demonstrated by numerical simulations and experiments. It is shown that the temporal depolarization effect can be significantly suppressed to maintain sufficient dynamic range for fast and accurate polarimetric measurement. The signal-to-noise ratio (SNR) of the received optical signal is also improved with the help of Fresnel reflections. With high DOP and improved SNR, instantaneous intrusion sensing and accurate vibration frequency measurement along the fiber link have been achieved without performing any data averaging.
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影响因子：
2.6
作者：
M. Wuilpart;P. Mégret;M. Blondel;A. Rogers;Y. Defosse
通讯作者：
M. Wuilpart;P. Mégret;M. Blondel;A. Rogers;Y. Defosse
影响因子：
1.9
作者：
ROGERS, AJ
通讯作者：
ROGERS, AJ
影响因子：
2.6
作者：
H. Dong;P. Shum;Y. Gong;Qizhen Sun
通讯作者：
H. Dong;P. Shum;Y. Gong;Qizhen Sun
影响因子：
1.3
作者：
A. Ambirajan;D. Look
通讯作者：
A. Ambirajan;D. Look
DOI：
10.1117/12.692973
发表时间：
2006-05
期刊：
--
影响因子：
--
作者：
V. Burdin;A. Bourdine;A. Shepelev
通讯作者：
V. Burdin;A. Bourdine;A. Shepelev