[1] [1] Fujiyama Q. Application of the Acoustic Emission (AE) Technology. Beijing: Metallurgy Industry Publication,Inc,1996.12

[2] [2] Geoffrey A C,Philip J N,Clay K K. Large-scale remotely interrogated arrays of fiber-optic interometric sensors for underwater acoustic applications. IEEE Sensors Journal,2003,3(1):19～30

[3] [3] Tae S J,Jung J L,Dong J Y,et al. Non-contact detection of laser～generated surface acoustic waves using fiber optic Sagnac interferometer. Ultrasonics,2002,40(8):803～807

[4] [4] Pavel A F,Alexei K K,Sridhar K,et al. Sagnac-type fiber-optic array sensor for detection of bulk ultrasonic waves. IEEE Transactions on Ultrasonics,Ferroelectrics,and Frequency Control,2000,47(3):584～590

[5] [5] Sverre K,Kjell B. An ultrasonic fiber-optic hydrophone incorporating a Push-pull transducer in a Sagnac interferometer. Journal of Lightwave Technology,1994,12(9):1696～1700

[6] [6] Tae S J,Seung S L,Young G K. Surface-bonded fiber optic Sagnac sensors for ultrasound detection. Ultrasoincs,2004,42(6): 837～841

[7] [7] Yuan L B,Zhou L M,Jin W. Detection of acoustic emission in structure using Sagnac-like fiber-loop interferometer. Sensors and Actuators A,2005,118(1):6～13

[8] [8] Claus R O,Cantrell J H. Detection of ultrasonic wave in solid by an optical fiber interferometer. IEEE Ultrason Symp,1980,719～721