%0 Journal Article
%T Frequency response of coiled-fiber optic sensor for detection of the acoustic emission<br>环形光纤声发射传感器的相位调制特性研究
%A College of Science
%A Harbin Engineering University
%A Harbin
%A <br>梁艺军
%A 徐彦德
%A 刘志海
%A 苑立波
%J 光子学报
%D 2006
%I 
%X An coiled optical fiber sensor based on Sagnac interf erometer for the measurement of ultrasonic wave propagated on the surface of a s olid plate has been proposed and demonstrated. The advantage of this kind sensor is that the feeble vibration produced by ultrasonic wave on the surface of soli d plate transmission can be detected accurately.The output optical intensity of interferometer is modulated when the ultrasonic wave signal passes through the s ensing coil of the Sagnac interferometer. The amplitude and the frequency of ult rasonic signal are obtained by using Fourier transform technique. Phase-modulat ion property of optical fiber sensor is discussed and experiment results are als o analyzed,which shows that the system could be used to detect the ultrasonic fr equency characteristics on the surface of the solid plate transmission.
%K Sagnac interferometer
%K Ooptical fiber sensor
%K Acoustic emission
%K Characteristic of phase modulation<br>Sagnac干涉仪
%K 光纤传感器
%K 声发射
%K 位相调制特性
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=9F6139E34DAA109F9C104697BF49FC39&aid=B991E93B6F2C0B38&yid=37904DC365DD7266&vid=6209D9E8050195F5&iid=9CF7A0430CBB2DFD&sid=530D9656D932F420&eid=CEEFA682892739FB&journal_id=1004-4213&journal_name=光子学报&referenced_num=4&reference_num=10