Abstract
We study the thermo-optic Goos–Hänchen (TOGH) effect in a prism–waveguide coupling structure with silicon-on-insulator waveguide. Stationary-phase method is utilized to calculate the TOGH shift. When the waveguide is regarded as a two-dimensional planar waveguide, a nonlinear relation between GH shift and temperature is obtained. Based on the noticeable TOGH effect, a sensitive temperature modulator or sensor can be realized. As the waveguide width is limited, the proposed structure can be regarded as a three-dimensional rectangular waveguide. We explore the GH shift and TOGH effect for different modes propagating in rectangular waveguide which show different linear relations between GH shift and temperature, which can be used to design mode-selective device based on TO effect.
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Acknowledgments
This work is supported by the Open Foundation of National Engineering Research Center of Electromagnetic Radiation Control Materials (ZYGX2013K001-3), the Scientific Research Fund of Chengdu University of Information Technology (N0. J201417), and the Project of Sichuan Provincial Department of Education (15ZA0183).
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Tang, T., Luo, L., Liu, W. et al. Thermo-optic Goos–Hänchen effect in silicon-on-insulator waveguide. Appl. Phys. B 120, 497–504 (2015). https://doi.org/10.1007/s00340-015-6158-1
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DOI: https://doi.org/10.1007/s00340-015-6158-1