Strain related characteristics of composite cavity fibre lasers

Ian Leung; Allan C. L. Wong; Gang-Ding Peng

doi:10.1117/12.757568

26 November 2007 Strain related characteristics of composite cavity fibre lasers

Ian Leung, Allan C. L. Wong, Gang-Ding Peng

Proceedings Volume 6830, Advanced Sensor Systems and Applications III; 68301W (2007) https://doi.org/10.1117/12.757568
Event: Photonics Asia 2007, 2007, Beijing, China

Abstract

A novel composite cavity fibre laser (CCFL) design is being investigated for its use in sensing applications. A CCFL can be fabricated simply by writing three spectrally matched Bragg gratings directly into a continuous length of doped fibre. When strained evenly, so that the strain experienced by both cavities are the same, the strain response of the CCFL is expected to be similar to that of a FBG or single cavity fibre laser sensor. However, if the internal cavities are strained unevenly, simulations derived from theoretical analysis suggest that the wavelength-encoded and intensity-encoded sensitivities can become significantly different from that of a typical single cavity fibre laser. A 3cm/9cm CCFL was tested using three different straining formats, and results agree well with theoretical expectations.

Citation Download Citation

Ian Leung, Allan C. L. Wong, and Gang-Ding Peng "Strain related characteristics of composite cavity fibre lasers", Proc. SPIE 6830, Advanced Sensor Systems and Applications III, 68301W (26 November 2007); https://doi.org/10.1117/12.757568

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