Polarization-independent self-collimating bends and beam splitters in photonic crystals
Chinese Optics Letters, Vol. 5, Issue 11, pp. 662-664 (2007)
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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.
© 2007 Chinese Optics Letters
OCIS Codes
(120.1680) Instrumentation, measurement, and metrology : Collimation
(230.1360) Optical devices : Beam splitters
(250.5300) Optoelectronics : Photonic integrated circuits
Citation
Xiaopeng Shen, Kui Han, Xianqing Yang, Yifeng Shen, Haipeng Li, Gang Tang, and Zhitian Guo, "Polarization-independent self-collimating bends and beam splitters in photonic crystals," Chin. Opt. Lett. 5, 662-664 (2007)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-5-11-662
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