基于介质混合等离子体-介质耦合器的超紧凑偏振分束器。

Ultracompact polarization beam splitter based on a dielectric-hybrid plasmonic-dielectric coupler.

机构信息

Laboratory of Photonics and Microwave Engineering, Royal Institute of Technology, 16440 Kista, Sweden.

出版信息

Opt Lett. 2012 Aug 15;37(16):3372-4. doi: 10.1364/OL.37.003372.

DOI:10.1364/OL.37.003372

Abstract

An ultracompact polarization beam splitter (PBS) based on a dielectric-hybrid plasmonic-dielectric coupler is proposed. The device utilizes the polarization-dependent nature of hybrid plasmonic waveguides. By choosing proper waveguide parameters, a 2×5.1 μm2 PBS (including S-bends) with extinction ratios over 15 dB and insertion losses below 1.5 dB in the full C-band should be achievable. The effect of fabrication errors is also investigated.

摘要

提出了一种基于介质混合等离子体-介质耦合器的超紧凑偏振分束器（PBS）。该器件利用了混合等离子体波导的偏振相关特性。通过选择合适的波导参数，应该可以实现具有超过 15 dB 消光比和低于 1.5 dB 插入损耗的 2×5.1 μm2 PBS（包括 S 弯曲），在整个 C 波段内。还研究了制造误差的影响。