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  • Received: Jul. 17, 2007

    Accepted: --

    Posted: Nov. 14, 2007

    Published Online: Nov. 14, 2007

    The Author Email: Xiaopeng Shen (sxpcumt@163.com)

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    Xiaopeng Shen, Kui Han, Xianqing Yang, Yifeng Shen, Haipeng Li, Gang Tang, Zhitian Guo. Polarization-independent self-collimating bends and beam splitters in photonic crystals[J]. Chinese Optics Letters, 2007, 5(11): 662

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Chinese Optics Letters, Vol. 5, Issue 11, 662 (2007)

Polarization-independent self-collimating bends and beam splitters in photonic crystals

Xiaopeng Shen*, Kui Han, Xianqing Yang, Yifeng Shen, Haipeng Li, Gang Tang, and Zhitian Guo

Author Affiliations

  • Department of Physics, School of Sciences, China University of Mining and Technology, Xuzhou 221008

Abstract

Polarization independent bends and beam splitters for transverse electric (TE) and transverse magnetic (TM) polarizations have been demonstrated in two-dimensional (2D) photonic crystals (PhCs). In virtuel of equi-frequency contour analysis and finite-difference time-domain calculations, self-collimation behaviors for TE- and TM-polarizations are achieved at the same frequency. Simulation results show a 90-degree bend with 90% efficiency and beam splitters with about 96% total efficiency for both TE- and TM-polarizations, where the light is self-guided by the self-collimation effect. Such bends and beam splitters are expected to play important roles in optical devices where polarization insensitivity is needed.

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