Silicon waveguide polarization beam splitter using reversed Δβ coupler structure

2019 ◽  
Author(s):  
Hideaki Okayama ◽  
Yosuke Onawa ◽  
Hiroyuki Takahashi ◽  
Daisuke Shimura ◽  
Hiroki Yaegashi ◽  
...  
Keyword(s):  
Beam Splitter ◽  
Polarization Beam Splitter ◽  
Silicon Waveguide

scholarly journals Planar-type polarization beam splitter based on a bridged silicon waveguide coupler

2015 ◽  
Vol 23 (2) ◽  
pp. 998 ◽  
Author(s):  
Dong Wook Kim ◽  
Moon Hyeok Lee ◽  
Yudeuk Kim ◽  
Kyong Hon Kim
Keyword(s):  
Beam Splitter ◽  
Polarization Beam Splitter ◽  
Waveguide Coupler ◽  
Silicon Waveguide

Compact Polarization Beam Splitter Based on Surface Plasmon Polariton Silicon Waveguide

2014 ◽  
Vol 609-610 ◽  
pp. 1233-1238 ◽  
Author(s):  
Jun Bo Yang ◽  
Zheng Zhang Shao ◽  
Su Zhi Xu ◽  
Jia Xu ◽  
Zhou Kuo
Keyword(s):  
Surface Plasmon ◽  
Large Scale ◽  
Beam Splitter ◽  
Coupling Efficiency ◽  
Polarized Light ◽  
Polarization Beam Splitter ◽  
Photonic Integration ◽  
Silicon Waveguide ◽  
Evanescent Coupling ◽  
Theoretical Predictions

A compact polarization beam splitter (PBS) based on a silicon waveguide-silver nanoribbon-silicon waveguide is proposed and demonstrated numerically by utilizing the evanescent coupling between a strip-nanowire and a nanoslot waveguide. Two-dimensional (2-D) FDTD simulations were performed to elucidate the properties of surface plasmon polaritons (SPPs) in this device made from silicon-metal-silicon, and were found to agree well with the theoretical predictions. TE and TM polarized light are respectively separated into two different output ports of Y-shaped silicon waveguide in which the coupling efficiency is 62% and 45% for 1.55μm wavelength, respectively. The proposed PBS structure could be utilized to develop ultracompact optical polarization modulating device for large-scale photonic integration and optical information processing.

scholarly journals Compact Photonic Crystal Polarization Beam Splitter Based on the Self-Collimation Effect

Photonics ◽  
2021 ◽  
Vol 8 (6) ◽  
pp. 198
Author(s):  
Geyu Tang ◽  
Huamao Huang ◽  
Yuqi Liu ◽  
Hong Wang
Keyword(s):  
Optical Communications ◽  
Beam Splitter ◽  
Extinction Ratio ◽  
Polarized Light ◽  
The Self ◽  
Polarization Beam Splitter ◽  
Optical Interconnection ◽  
Beam Splitting ◽  
Beam Splitters ◽  
Polarization Extinction Ratio

We propose a new compact polarization beam splitter based on the self-collimation effect of two-dimensional photonic crystals and photonic bandgap characteristics. The device is composed of a rectangular air holes-based polarization beam splitting structure and circular air holes-based self-collimating structure. By inserting the polarization beam splitting structure into the self-collimating structure, the TE and TM polarized lights are orthogonally separated at their junction. When the number of rows in the hypotenuse of the inserted rectangular holes is 5, the transmittance of TE polarized light at 1550 nm is 95.4% and the corresponding polarization extinction ratio is 23 dB; on the other hand, the transmittance of TM polarized light is 88.5% and the corresponding polarization extinction ratio is 37 dB. For TE and TM polarized lights covering a 100 nm bandwidth, the TE and TM polarization extinction ratios are higher than 18 dB and 30 dB, respectively. Compared with the previous polarization beam splitters, our structure is simple, the size is small, and the extinction ratio is high, which meets the needs of modern optical communications, optical interconnection, and optical integrated systems.

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