26 November 2007 An in-line in-fibre ring cavity multi-parameter sensor with a tuneable refractive index response
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Abstract
An in-line fibre ring cavity is fabricated by writing two blazed gratings next to each other to form a Fabry Perot cavity. A visibility of fringes as good as 0.032 in the reflection spectrum and 0.76 for transmission is obtained for the interference between the forward propagating guided mode and the reverse propagating ghost mode of the blazed grating. The ability to measure the external refractive index and the variability of this response with cavity length is demonstrated.
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Paul Childs, Paul Childs, Ian Leung, Ian Leung, Allan C. L. Wong, Allan C. L. Wong, Gang-Ding Peng, Gang-Ding Peng, } "An in-line in-fibre ring cavity multi-parameter sensor with a tuneable refractive index response", Proc. SPIE 6830, Advanced Sensor Systems and Applications III, 683004 (26 November 2007); doi: 10.1117/12.753772; https://doi.org/10.1117/12.753772
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