A Compact and Broadband 2×2 3-dB Adiabatic Coupler Based on Trapezoidal Subwavelength Gratings
We propose a compact, broadband 2×2 3-dB adiabatic coupler using trapezoidal subwavelength gratings on silicon-on-insulator platform. The proposed device is constructed by two tapered waveguides, which are composed of trapezoidal subwavelength gratings. Broadband 3-dB optical power splitt...
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| Format: | Article |
| Language: | English |
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IEEE
2023-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/10123933/ |
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| author | Haoyu Wu Yaohui Sun Yue Zhou Mengjia Lu Tong Lin Guohua Hu Binfeng Yun Yiping Cui |
| author_facet | Haoyu Wu Yaohui Sun Yue Zhou Mengjia Lu Tong Lin Guohua Hu Binfeng Yun Yiping Cui |
| author_sort | Haoyu Wu |
| collection | DOAJ |
| description | We propose a compact, broadband 2×2 3-dB adiabatic coupler using trapezoidal subwavelength gratings on silicon-on-insulator platform. The proposed device is constructed by two tapered waveguides, which are composed of trapezoidal subwavelength gratings. Broadband 3-dB optical power splitting with a coupling length of 24 μm is achieved by the adiabatic mode evolution of the two lowest order transverse electric modes. By using the finite time difference method, the power splitting ratio better than 3±0.21 dB and the insertion loss less than 0.19 dB are obtained in the wavelength range of 1450 nm to 1650 nm. |
| format | Article |
| id | doaj-art-57dfdbc7db8e4be3b944778bfd481886 |
| institution | DOAJ |
| issn | 1943-0655 |
| language | English |
| publishDate | 2023-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-57dfdbc7db8e4be3b944778bfd4818862025-08-20T03:16:04ZengIEEEIEEE Photonics Journal1943-06552023-01-011531610.1109/JPHOT.2023.327570910123933A Compact and Broadband 2×2 3-dB Adiabatic Coupler Based on Trapezoidal Subwavelength GratingsHaoyu Wu0Yaohui Sun1Yue Zhou2Mengjia Lu3Tong Lin4Guohua Hu5https://orcid.org/0000-0002-7492-1393Binfeng Yun6https://orcid.org/0000-0002-3991-8156Yiping Cui7https://orcid.org/0000-0002-4648-2506Advanced Photonics Center, Southeast University, Nanjing, ChinaAdvanced Photonics Center, Southeast University, Nanjing, ChinaAdvanced Photonics Center, Southeast University, Nanjing, ChinaAdvanced Photonics Center, Southeast University, Nanjing, ChinaAdvanced Photonics Center, Southeast University, Nanjing, ChinaAdvanced Photonics Center, Southeast University, Nanjing, ChinaAdvanced Photonics Center, Southeast University, Nanjing, ChinaAdvanced Photonics Center, Southeast University, Nanjing, ChinaWe propose a compact, broadband 2×2 3-dB adiabatic coupler using trapezoidal subwavelength gratings on silicon-on-insulator platform. The proposed device is constructed by two tapered waveguides, which are composed of trapezoidal subwavelength gratings. Broadband 3-dB optical power splitting with a coupling length of 24 μm is achieved by the adiabatic mode evolution of the two lowest order transverse electric modes. By using the finite time difference method, the power splitting ratio better than 3±0.21 dB and the insertion loss less than 0.19 dB are obtained in the wavelength range of 1450 nm to 1650 nm.https://ieeexplore.ieee.org/document/10123933/Adiabatic couplerintegrated opticssilicon on insulatorsubwavelength gratings |
| spellingShingle | Haoyu Wu Yaohui Sun Yue Zhou Mengjia Lu Tong Lin Guohua Hu Binfeng Yun Yiping Cui A Compact and Broadband 2×2 3-dB Adiabatic Coupler Based on Trapezoidal Subwavelength Gratings IEEE Photonics Journal Adiabatic coupler integrated optics silicon on insulator subwavelength gratings |
| title | A Compact and Broadband 2×2 3-dB Adiabatic Coupler Based on Trapezoidal Subwavelength Gratings |
| title_full | A Compact and Broadband 2×2 3-dB Adiabatic Coupler Based on Trapezoidal Subwavelength Gratings |
| title_fullStr | A Compact and Broadband 2×2 3-dB Adiabatic Coupler Based on Trapezoidal Subwavelength Gratings |
| title_full_unstemmed | A Compact and Broadband 2×2 3-dB Adiabatic Coupler Based on Trapezoidal Subwavelength Gratings |
| title_short | A Compact and Broadband 2×2 3-dB Adiabatic Coupler Based on Trapezoidal Subwavelength Gratings |
| title_sort | compact and broadband 2 x00d7 2 3 db adiabatic coupler based on trapezoidal subwavelength gratings |
| topic | Adiabatic coupler integrated optics silicon on insulator subwavelength gratings |
| url | https://ieeexplore.ieee.org/document/10123933/ |
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