High-extinction-ratio silicon polarization beam splitter with tolerance to waveguide width and coupling length variations.

@article{Zhang2016HighextinctionratioSP,
  title={High-extinction-ratio silicon polarization beam splitter with tolerance to waveguide width and coupling length variations.},
  author={Yong Zhang and Yu He and Jiayang Wu and Xinhong Jiang and Ruili Liu and Ciyuan Qiu and Xiaoqing Jiang and Jianyi Yang and Christine Tremblay and Yikai Su},
  journal={Optics express},
  year={2016},
  volume={24 6},
  pages={6586-93}
}
We demonstrate a compact silicon polarization beam splitter (PBS) based on grating-assisted contradirectional couplers (GACCs). Over 30-dB extinction ratios and less than 1-dB insertion losses are achieved for both polarizations. The proposed PBS exhibits tolerance in width variation, and the polarization extinction ratios remain higher than 20 dB for both polarizations when the width variation is adjusted from + 10 to -10 nm. Benefiting from the enhanced coupling by the GACCs, the polarization… CONTINUE READING
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Wideband polarization splitter and rotator with large fabrication tolerance and simple fabrication process

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