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Proceedings Paper

Study of total internal reflection switch
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Paper Abstract

The optical waveguide switch utilizing the principle of total internal reflection (TIR) is a promising structure since its merits such as compact size, digital response characteristic, insensitivity to wavelength and polarization, and so on. In this paper the TIR switch is studied both in theory and in experiment. At first, we give a comprehensive analysis about reflection mechanism in the TIR switch from the following three issues: the grazing incidence of a narrow beam in the free space, the beam reflection in a bounded space, and the beam expansion induced by the reflection in a two-dimensional gradient field of the refractive index decrease. Then based on the analytical works, we successfully fabricate practical TIR switches by utilizing the thermo-optical effect of polymer and the carrier injection effect of GaAs (both the current injection and the photon injection manners are employed). The testing results show that: the extinction ratio of the thermo-optical TIR switch exceeds 35 dB at an power consumption of 80 mW; for the carrier injection TIR switch utilizing the current injection manner, its operation speed is faster than 20 ns and its operation current is about 70 mA.

Paper Details

Date Published: 9 February 2009
PDF: 13 pages
Proc. SPIE 7158, 2008 International Conference on Optical Instruments and Technology: Microelectronic and Optoelectronic Devices and Integration, 71580A (9 February 2009); doi: 10.1117/12.811137
Show Author Affiliations
Hui Yu, Zhejiang Univ. (China)
Wei Qi, Zhejiang Univ. (China)
Yubo Li, Zhejiang Univ. (China)
Yinlei Hao, Zhejiang Univ. (China)
Xiaoqing Jiang, Zhejiang Univ. (China)
Minghua Wang, Zhejiang Univ. (China)
Jianyi Yang, Zhejiang Univ. (China)


Published in SPIE Proceedings Vol. 7158:
2008 International Conference on Optical Instruments and Technology: Microelectronic and Optoelectronic Devices and Integration
Xuping Zhang; Wojtek J. Bock; Xiaoyi Bao; Ping Shum, Editor(s)

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