A system for interrogation of high-frequency events with an FBG array in the presence of large quasi-static fluctuations has been developed at Intelligent Optical Systems (IOS). The system allows highly sensitive detection of periodic or transient events up to the MHz range while automatically compensating for slow changes in the FBG center frequency using a closed loop tracking system. Both the high frequency signal and the low frequency parts of the sensor spectrum are available for further processing. The system components, setup, and applications are presented and discussed.


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    Title :

    Self-compensated high-speed FBG interrogation using closed-loop tracking system


    Contributors:

    Conference:

    Photonics in the Transportation Industry: Auto to Aerospace ; 2007 ; Boston,MA,United States


    Published in:

    Publication date :

    2007-09-26





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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