[2] [2] UUAREZ J C, ERIC W, CHOI K N, et al. Distributed fiberoptic intrusion sensor system［J］. Lightwave Technology, 2005, 23(6): 20812087.

[3] [3] SUN Yao, JIA Bo, ZHANG Tianzhao. Position determination sensing system based on allfiber interferometer with feedback loop［J］. Transducer and Microsystem Technology, 2006, 25(1): 4446.

[5] [5] HOFFMAN P R, KUZYK M G. Position determination of an acoustic burst along a sagnac interferometer［J］. Journal of Lightwave Technology, 2004, 22(2): 494498.

[7] [7] HUANG Jianhui, CAO Mang, LI Dacheng, et al. Review of phase generated carrier demodulation techniques for interferometric fiberoptic sensors［J］. Optical Technology, 2000, 26(3)： 228231.

[8] [8] TANG Ji. Research on scheme of phase detection of machzehnder optical fiber interferometer［J］. Chinese Journal of Sensors and Actuators, 2000， 13(2)： 96100.

[9] [9] DANDRIDGE A， TVETEN A， GIALLORENZI T. Homodyne demodulation scheme for fiber optic sensors using phase generated carrier［J］. IEEE Journal of Quantum Electronics, 1982, 18(10): 16471653.

[11] [11] TANG Huang, WU Hongyan, ZHANG Hua, et al. Application of fiberoptic encoding technology in multiplezone intrusion detection system［J］. Chinese Journal of Scientific Instrument, 2010, 31（4）： 912915.