23 April 2017 Effect of parameters in moving average method for event detection enhancement using phase sensitive OTDR
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Proceedings Volume 10323, 25th International Conference on Optical Fiber Sensors; 103238Y (2017) https://doi.org/10.1117/12.2267465
Event: 25th International Conference on Optical Fiber Sensors, 2017, Jeju, Korea, Republic of
Abstract
We analyze the relations of parameters in moving average method to enhance the event detectability of phase sensitive optical time domain reflectometer (OTDR). If the external events have unique frequency of vibration, then the control parameters of moving average method should be optimized in order to detect these events efficiently. A phase sensitive OTDR was implemented by a pulsed light source, which is composed of a laser diode, a semiconductor optical amplifier, an erbium-doped fiber amplifier, a fiber Bragg grating filter, and a light receiving part, which has a photo-detector and high speed data acquisition system. The moving average method is operated with the control parameters: total number of raw traces, M, number of averaged traces, N, and step size of moving, n. The raw traces are obtained by the phase sensitive OTDR with sound signals generated by a speaker. Using these trace data, the relation of the control parameters is analyzed. In the result, if the event signal has one frequency, then the optimal values of N, n are existed to detect the event efficiently.
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Yong-Seok Kwon, Khurram Naeem, Min Yong Jeon, Il-bum Kwon, "Effect of parameters in moving average method for event detection enhancement using phase sensitive OTDR", Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103238Y (23 April 2017); doi: 10.1117/12.2267465; https://doi.org/10.1117/12.2267465
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