Ultracompact optical fiber Fabry-Perot interferometer based on in-line integrated sub-micron silicon film

A. Micco; G. Quero; A. Crescitelli; A. Ricciardi; A. Cusano

doi:10.1117/12.2025866

20 May 2013 Ultracompact optical fiber Fabry-Perot interferometer based on in-line integrated sub-micron silicon film

A. Micco, G. Quero, A. Crescitelli, A. Ricciardi, A. Cusano

Proceedings Volume 8794, Fifth European Workshop on Optical Fibre Sensors; 87940P (2013) https://doi.org/10.1117/12.2025866
Event: Fifth European Workshop on Optical Fibre Sensors, 2013, Krakow, Poland

Abstract

In this work, an ultra compact in line fiber optic Fabry-Perot interferometer is presented. The interferometric structure consists of a thin (< 1 μm) amorphous silicon layer in line integrated into a standard single mode optical fiber by means of an electric arc discharge technique. The device exhibits low loss (1.46 dB) and high interference fringe visibility (~ 30% in linear scale) both in reflection and transmission due to the high refractive index contrast between silica and α-Si. A high linear temperature sensitivity up to 75 pm/°C is demonstrated in the range 15-52 °C. The proposed device is simple, compact, cost effective and attractive for point monitoring sensing application in ultra-high temperature sensing in harsh environments.

Citation Download Citation

A. Micco, G. Quero, A. Crescitelli, A. Ricciardi, and A. Cusano "Ultracompact optical fiber Fabry-Perot interferometer based on in-line integrated sub-micron silicon film", Proc. SPIE 8794, Fifth European Workshop on Optical Fibre Sensors, 87940P (20 May 2013); https://doi.org/10.1117/12.2025866

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