A Weakly Coupled Multi-core Fibre-based Michelson Interferometer Composed Of An In-fibre Coupler
A compact temperature measuring device using a weakly coupled multi-core fibre in the Michelson interferometer structure is proposed and experimentally demonstrated. The device is manufactured by an easy and simple splicing approach which consists of a multicore fibre segment and an in-fibre coupler. In-fibre coupler is made of a cascaded single-mode fibre and multi-core fibre balls. It enhances the interference phenomenon of light energy between the central core and the outer cores of a multi-core fibre. The sensor shows a high-quality fringe visibility of about 14–18 dB in the wavelength spectrum. Multi-core structure presents multi-path interferences and exhibits a maximum temperature sensitivity of 70.6 pm/°C in the range of 20–90°C with an insensitive response to the refractive index in the range of 1.334 to 1.354. The device has the advantages of compact size, easy manufacturing, and it solves cross-sensitivity between temperature and refractive index making it an authentic real-time temperature monitoring solution.
F. Mumtaz et al., "A Weakly Coupled Multi-core Fibre-based Michelson Interferometer Composed Of An In-fibre Coupler," Opto-Electronics Review, vol. 29, no. 4, pp. 117 - 125, Polish Academy of Sciences, Jan 2021.
The definitive version is available at https://doi.org/10.24425/opelre.2021.139436
Electrical and Computer Engineering
Keywords and Phrases
In-fibre coupler; Michelson interferometer; Seven core fibre; Temperature sensor
International Standard Serial Number (ISSN)
Article - Journal
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01 Jan 2021