A novel multi-longitudinal mode fiber-optic vibration sensor is presented in this paper. It is made of a piece of fiber, a fiber Bragg grating and a coupler. The beat frequency of any two different laser modes is modulated by the vibration signal. The modulated beat frequency signal is frequency-modulated signal, thus it can be demodulated with the simple frequency-modulation technique. It is demonstrated that the vibration signal from 60 Hz to 20 KHz can be measured successfully. The sensor has high signal-to-noise ratio, especially between 500 Hz and 10 KHz.


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    Titel :

    Multi-longitudinal mode fiber-optic vibration sensor


    Beteiligte:
    Liang Gao, (Autor:in) / Shengchun Liu, (Autor:in) / Zuowei Yin, (Autor:in) / Lin Chen, (Autor:in) / Xiangfei Chen, (Autor:in)


    Erscheinungsdatum :

    01.10.2011


    Format / Umfang :

    722283 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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