Integrated liquid-filled directional coupler for temperature sensing

Felipe C. Salgado; Danilo H. Spadoti

doi:10.1117/12.2194450

28 September 2015 Integrated liquid-filled directional coupler for temperature sensing

Proceedings Volume 9634, 24th International Conference on Optical Fibre Sensors; 963454 (2015) https://doi.org/10.1117/12.2194450
Event: International Conference on Optical Fibre Sensors (OFS24), 2015, Curitiba, Brazil

Abstract

A silicon nitride directional coupler filled with toluene is proposed as temperature sensor. This liquid material has a high thermo-optic coefficient, which allows large variations on its refractive index in function of temperature variations. Simulations were performed to obtain the sensor's sensitivities, which measured on the output ports (P₂, P₃) of the structure are 0:11392= °C and 0:11499= °C, respectively.

Citation Download Citation

Felipe C. Salgado and Danilo H. Spadoti "Integrated liquid-filled directional coupler for temperature sensing", Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 963454 (28 September 2015); https://doi.org/10.1117/12.2194450

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