In this paper we report the development of a FBG (fibre Bragg grating) interrogation system, that is capable of detecting independently the two orthogonally polarised signals reflected from a FBG fabricated in a PM (polarisation maintaining) fibre. The interrogation system imposes no limitation on the measurable strain. It is possible to detect a strain gradient by measuring independently the spectral broadening of the two polarised signals. The system has been used to fabricate and characterise FBGs in different PM fibres. As a demonstration of the feasibility of the interrogation system for multi-axis strain sensing, the transverse strain sensing characteristics of PM FBGs are presented.


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    Title :

    A polarisation maintaining fibre Bragg grating interrogation system for multi-axis strain sensing


    Contributors:
    Chen-Chun Ye, (author) / Staines, S.E. (author) / James, S.W. (author) / Tatam, R.P. (author)


    Publication date :

    2002-01-01


    Size :

    293991 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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