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Proceedings Paper

Strain related characteristics of composite cavity fibre lasers
Author(s): Ian Leung; Allan C. L. Wong; Gang-Ding Peng
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Paper 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.

Paper Details

Date Published: 26 November 2007
PDF: 9 pages
Proc. SPIE 6830, Advanced Sensor Systems and Applications III, 68301W (26 November 2007); doi: 10.1117/12.757568
Show Author Affiliations
Ian Leung, Univ. of New South Wales (Australia)
Allan C. L. Wong, Univ. of New South Wales (Australia)
Gang-Ding Peng, Univ. of New South Wales (Australia)

Published in SPIE Proceedings Vol. 6830:
Advanced Sensor Systems and Applications III
Yun-Jiang Rao; Yanbiao Liao; Gang-Ding Peng, Editor(s)

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