Temperature measurement based on photonic crystal modal interferometer

Abstract

Based on the interferences between core modes and cladding modes in photonic crystal fiber (PCF), a novel temperature sensor is presented and experimentally demonstrated. The peak wavelength of the interference spectrum linearly increased with an increase in temperature. A measurement sensitivity of 10.38 pm/°C was experimentally achieved for temperatures ranging from 30°C to 100°C. Experimental results also indicate that the curvature and transverse load do not have a distinguishable influence on the transmission spectrum of the proposed fiber sensor, which ensures its applicability for practical applications.

Keywords

optical fiber sensor / temperature / photonic crystal fiber (PCF) / measurement

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Acknowledgements

This work was jointly supported by the National Key Natural Science Foundation of China (Grant No. 60736039), the National Natural Science Foundation of China (Grant Nos. 10904075, 11004110, and 50802044), the Fundamental Research Funds for the Central Universities, the National Key Basic Research and Development Program of China (No. 2010CB327605).

RIGHTS & PERMISSIONS

2014 Higher Education Press and Springer-Verlag Berlin Heidelberg