High sensitivity high temperature sensor based on SMS structure with large-core all-solid bandgap fiber as the multimode section

Marcos A. R. Franco; Alice L. S. Cruz; Valdir A. Serrão; Carmem L. Barbosa

doi:10.1117/12.2058077

2 June 2014 High sensitivity high temperature sensor based on SMS structure with large-core all-solid bandgap fiber as the multimode section

Marcos A. R. Franco, Alice L. S. Cruz, Valdir A. Serrão, Carmem L. Barbosa

Author Affiliations +

Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 9157A9 (2014) https://doi.org/10.1117/12.2058077
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain

Abstract

A fiber optic interferometric device based on a singlemode-multimode-singlemode (SMS) structure is proposed as a high sensitive high temperature sensor. The multimode section (MMF) consists of a large-core all-solid photonic bandgap fiber (AS-PBF) with silica as the background material and germanium-doped silica at the high index regions. The numerical analyses were carried out by beam propagation method. The numerical results indicate a constant high temperature sensitivity of ~−35 pm/°C over a large temperature range from 20oC to 930°C.

Citation Download Citation

Marcos A. R. Franco, Alice L. S. Cruz, Valdir A. Serrão, and Carmem L. Barbosa "High sensitivity high temperature sensor based on SMS structure with large-core all-solid bandgap fiber as the multimode section", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 9157A9 (2 June 2014); https://doi.org/10.1117/12.2058077

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