Design of a Compact Polarization Splitter in Horizontal Multiple-Slotted Waveguide Structures

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概要

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• A compact polarization splitter based on the directional coupler in horizontal multiple-slotted waveguide (HMSW) structures is proposed and designed by using a modified three-dimensional full-vectorial beam propagation method with perfectly matched layer absorbing boundary conditions. The results show that the birefringence of the HMSW is stronger than that of the single-slotted waveguide, leading to a reduction in length for the present device. Moreover, the HMSW can also enhance the optical confinement inside the slot regions. The coupling length of the directional coupler composed of two-parallel HMSWs as functions of the waveguide parameters are analyzed, and a compact device of 238.0 μm in length is achieved with the crosstalks of $-27.9$ and $-35.6$ dB for quasi-transverse-electric and quasi-transverse-magnetic modes, respectively. In addition, the evolution of the injected field along the propagation distance through the polarization splitter is also demonstrated.

• Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
• 2008-05-25

著者

• Liu Xu

  Laboratory of Photonics and Optical Communications, Electronic Engineering Department, Southeast University, Nanjing 210096, China

• Xiao Jinbiao

  Laboratory of Photonics and Optical Communications, Electronic Engineering Department, Southeast University, Nanjing 210096, China

• Sun Xiaohan

  Laboratory of Photonics and Optical Communications, Electronic Engineering Department, Southeast University, Nanjing 210096, China

関連論文

• Design of a Compact Polarization Splitter in Horizontal Multiple-Slotted Waveguide Structures

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