Nanorefractometer based on deposition of an overlay on a long period fiber grating

Ignacio Del Villar; Ignacio R. Matias; Francisco J. Arregui

doi:10.1117/12.624262

23 May 2005 Nanorefractometer based on deposition of an overlay on a long period fiber grating

Ignacio Del Villar, Ignacio R. Matias, Francisco J. Arregui

Proceedings Volume 5855, 17th International Conference on Optical Fibre Sensors; (2005) https://doi.org/10.1117/12.624262
Event: 17th International Conference on Optical Fibre Sensors, 2005, Bruges, Belgium

Abstract

The deposition of an overlay of higher refractive index than the cladding in a Long Period Fiber Grating (LPFG) permits to improve the sensitivity to ambient refractive index changes in a great manner. The question is to obtain an optimum thickness value for the overlay. The problem is analysed with a numerical method based on LP mode approximation and coupled mode theory. Design rules are given for obtaining optimum sensitivity for specific ambient refractive index ranges.

Citation Download Citation

Ignacio Del Villar, Ignacio R. Matias, and Francisco J. Arregui "Nanorefractometer based on deposition of an overlay on a long period fiber grating", Proc. SPIE 5855, 17th International Conference on Optical Fibre Sensors, (23 May 2005); https://doi.org/10.1117/12.624262

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