Title: Fibre-optical acoustic sensor
Application Number: 200610024955 Application Date: 2006.03.22
Publication Number: 1821727 Publication Date: 2006.08.23
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G01H9/00
Applicant(s) Name: Shanghai Inst. of Optics and Fine Mechanics, CAS Address: 201800
Inventor(s) Name: Cai Haiwen, Chen Gaoting
Attorney & Agent: zhang zechun
Abstract:
     The composition of an optical fiber sound sensor is that a light source module is connected with a first port of a fiber synthetic wavelength element, the third port of said fiber light element is connected with a non-intrisic fiber Fabry-Perot interference sensor head by fibers, the second port of the light element is connected with the first port of the fiber splitter and the second port of which is connected with an adjustable fiber band-pass filter, which is connected with a first photoelectric detection unit, the third port of the splitter is connected with a second photoelectric detection unit, a driver of the filter is connected with the signal process and control unit and the first and second detection units are connected with said signal and the control units. This invention is a sound sensor with automatic stable orthogonal working points.
Time: 6
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