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Proceedings Paper

Modal interferometer made of microstructured optical fibre for multiparameter sensing
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Paper Abstract

The fabrication of a compact all-fibre modal interferometer that can be used to sense different parameters is reported. The device consists of a tapered large-mode-area microstructured optical fibre with collapsed air holes over a localized region. The tapering is carried out by slowly elongating the fibre while it is heated with a high-temperature oscillating flame torch. This non adiabatic method allows the collapsing of the air holes and transforms a section of the microstructured fibre into a solid one. As a consequence the fundamental HE11 mode is coupled to the HE1m cladding modes which can beat or interfere. This makes the transmission of the device versus the wavelength to exhibit an oscillatory pattern. Such a pattern shifts with strain, high temperature, or refractive index. The device is compact, can operate in a broad range of wavelengths, and can be fabricated in a few minutes which makes it attractive for optical sensing.

Paper Details

Date Published: 22 April 2006
PDF: 6 pages
Proc. SPIE 6189, Optical Sensing II, 618906 (22 April 2006); doi: 10.1117/12.662239
Show Author Affiliations
Joel Villatoro, Institut de Ciències Fotòniques (Spain)
Vladimir P. Minkovich, Ctr. de Investigaciones en Óptica, A.C. (Mexico)
D. Monzón-Hernández, Ctr. de Investigaciones en Óptica, A.C. (Mexico)
G. Badenes, Institut de Ciències Fotòniques (Spain)

Published in SPIE Proceedings Vol. 6189:
Optical Sensing II
Brian Culshaw; Anna G. Mignani; Hartmut Bartelt; Leszek R. Jaroszewicz, Editor(s)

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