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Polarization optical bridge based on two-dimensional photonic crystals and Bragg effect of defect rods

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Abstract

We propose two types of polarization optical bridges (POBs) that combine two-dimensional square-lattice photonic crystal cross-waveguides containing Bragg defects. The Bragg defects provide polarization selection. A very low polarization cross talk was obtained in the POBs. Using the finite element method, it is demonstrated that these structures can achieve a degree of polarization of almost 1, a polarization extinction ratio >32 dB, and an insertion loss <0.3 dB over a wide range of wavelengths. Such structures can be used for separating different polarization modes while maintaining polarization independence. Moreover, they have great potential for application in large-scale optical integrated circuits.

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Acknowledgments

This work was supported by the NSFC (Grant No.: 61307048, 61275043, 61171006, 60877034), the Guangdong Province NSF (Key project, Grant No.: 8251806001000004), the Shenzhen Science Bureau (Grant No. 200805, CXB201105050064A), and the Shenzhen Special Research Fund for Strategic Emerging Industry Development (JCYJ20120613115000529).

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Authors and Affiliations

  1. THz Technical Research Center, Shenzhen Key Laboratory of Micro-Nano Photonic Information Technology, College of Electronic Science and Technology, Shenzhen University, Shenzhen, 518060, China

    Mi Lin, Xin Jin, Zhengbiao Ouyang, Qiong Wang, Guohua Wen & Dengguo Zhang

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  1. Mi Lin
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  2. Xin Jin
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  3. Zhengbiao Ouyang
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  4. Qiong Wang
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  5. Guohua Wen
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  6. Dengguo Zhang
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Correspondence to Zhengbiao Ouyang.

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Lin, M., Jin, X., Ouyang, Z. et al. Polarization optical bridge based on two-dimensional photonic crystals and Bragg effect of defect rods. Appl. Phys. B 118, 145–151 (2015). https://doi.org/10.1007/s00340-014-5963-2

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  • DOI: https://doi.org/10.1007/s00340-014-5963-2

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