Ultrabroadband Compact Graphene–Silicon TM-Pass Polarizer
Graphene is treated as an anisotropic material because it is one atom thick and its π electrons cause electric conduction in its plane. Based on the polarization-dependent absorption, we design compact broadband transverse-magnetic (TM)-pass polarizer by exploiting a graphene–s...
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| Format: | Article |
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IEEE
2017-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/7867844/ |
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| author | Xiao Hu Jian Wang |
| author_facet | Xiao Hu Jian Wang |
| author_sort | Xiao Hu |
| collection | DOAJ |
| description | Graphene is treated as an anisotropic material because it is one atom thick and its π electrons cause electric conduction in its plane. Based on the polarization-dependent absorption, we design compact broadband transverse-magnetic (TM)-pass polarizer by exploiting a graphene–silicon horizontal slot waveguide structure on silicon-on-insulator (SOI) platforms. The interaction between light and graphene is greatly enhanced by placing the double-layer graphene sheets adjacent to the slot waveguide. The selection of the geometric parameters (e.g., waveguide width, silicon, and Si<sub>3</sub>N<sub>4</sub> thicknesses) is discussed. We study the mode properties, extinction ratio (ER), bandwidth, and insertion loss. The graphene–silicon slot waveguide based polarizer offers the performance of high extinction ratio, low insertion loss, broad bandwidth, small footprints, and compatibility with an SOI platform. By employing a 150 <italic>μ</italic>m long graphene–silicon horizontal slot waveguide, the ER is higher than 40 dB, and the insertion loss is less than 3 dB over the 1450–1650 nm wavelength range. We also analyze the impacts of practical fabrication imperfections on the operation performance, i.e., fabrication error tolerance, and give the possible fabrication process of graphene–silicon horizontal slot waveguide based polarizer. |
| format | Article |
| id | doaj-art-84609c86a7b3401f9475f61d4e329e9a |
| institution | DOAJ |
| issn | 1943-0655 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-84609c86a7b3401f9475f61d4e329e9a2025-08-20T03:14:51ZengIEEEIEEE Photonics Journal1943-06552017-01-019211010.1109/JPHOT.2017.26729017867844Ultrabroadband Compact Graphene–Silicon TM-Pass PolarizerXiao Hu0Jian Wang1Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, ChinaWuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, ChinaGraphene is treated as an anisotropic material because it is one atom thick and its π electrons cause electric conduction in its plane. Based on the polarization-dependent absorption, we design compact broadband transverse-magnetic (TM)-pass polarizer by exploiting a graphene–silicon horizontal slot waveguide structure on silicon-on-insulator (SOI) platforms. The interaction between light and graphene is greatly enhanced by placing the double-layer graphene sheets adjacent to the slot waveguide. The selection of the geometric parameters (e.g., waveguide width, silicon, and Si<sub>3</sub>N<sub>4</sub> thicknesses) is discussed. We study the mode properties, extinction ratio (ER), bandwidth, and insertion loss. The graphene–silicon slot waveguide based polarizer offers the performance of high extinction ratio, low insertion loss, broad bandwidth, small footprints, and compatibility with an SOI platform. By employing a 150 <italic>μ</italic>m long graphene–silicon horizontal slot waveguide, the ER is higher than 40 dB, and the insertion loss is less than 3 dB over the 1450–1650 nm wavelength range. We also analyze the impacts of practical fabrication imperfections on the operation performance, i.e., fabrication error tolerance, and give the possible fabrication process of graphene–silicon horizontal slot waveguide based polarizer.https://ieeexplore.ieee.org/document/7867844/Graphenesilicon photonicssilicon waveguideslot waveguidepolarizer |
| spellingShingle | Xiao Hu Jian Wang Ultrabroadband Compact Graphene–Silicon TM-Pass Polarizer IEEE Photonics Journal Graphene silicon photonics silicon waveguide slot waveguide polarizer |
| title | Ultrabroadband Compact Graphene–Silicon TM-Pass Polarizer |
| title_full | Ultrabroadband Compact Graphene–Silicon TM-Pass Polarizer |
| title_fullStr | Ultrabroadband Compact Graphene–Silicon TM-Pass Polarizer |
| title_full_unstemmed | Ultrabroadband Compact Graphene–Silicon TM-Pass Polarizer |
| title_short | Ultrabroadband Compact Graphene–Silicon TM-Pass Polarizer |
| title_sort | ultrabroadband compact graphene x2013 silicon tm pass polarizer |
| topic | Graphene silicon photonics silicon waveguide slot waveguide polarizer |
| url | https://ieeexplore.ieee.org/document/7867844/ |
| work_keys_str_mv | AT xiaohu ultrabroadbandcompactgraphenex2013silicontmpasspolarizer AT jianwang ultrabroadbandcompactgraphenex2013silicontmpasspolarizer |