High-Extinction-Ratio and Compact 1310/1550 nm Wavelength Diplexer on SOI Platform Based on an SWG-Structured Two-Mode Interference Coupler
We propose a 1310/1550 nm wavelength diplexer on a 220-nm silicon-on-insulator (SOI) platform. The device is based on a compact two-mode interference (TMI) coupler enabled by a subwavelength grating (SWG) slot. The ideal beat length ratio of 2:1 is achieved with the transverse magnetic (TM) mode by...
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IEEE
2022-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/9709580/ |
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| author | Jinsong Zhang Luhua Xu Deng Mao Zhenping Xing Yannick DrMello Maxime Jacques Yun Wang Stephane Lessard David V. Plant |
| author_facet | Jinsong Zhang Luhua Xu Deng Mao Zhenping Xing Yannick DrMello Maxime Jacques Yun Wang Stephane Lessard David V. Plant |
| author_sort | Jinsong Zhang |
| collection | DOAJ |
| description | We propose a 1310/1550 nm wavelength diplexer on a 220-nm silicon-on-insulator (SOI) platform. The device is based on a compact two-mode interference (TMI) coupler enabled by a subwavelength grating (SWG) slot. The ideal beat length ratio of 2:1 is achieved with the transverse magnetic (TM) mode by fine-tuning the SWG slot parameters, resulting in a TMI length of only 37 µm. We reveal that the key to high extinction ratio (ER) is the careful design of the tapers, and the device achieves high ERs of 28.05/42.54 dB at 1310/1550 nm with simulation. The measured bandwidths for ER <inline-formula><tex-math notation="LaTeX">$>$</tex-math></inline-formula> 15 dB are 82 nm and 56 nm at O- and C-band. Moreover, the design guarantees large calculated 1-dB-insertion-loss (IL) bandwidths of 192/123 nm at 1310/1550 nm. To the best of our knowledge, this is the first experimental demonstration of a high-performance compact silicon 1310/1550 nm diplexer based on a TMI coupler. |
| first_indexed | 2024-12-17T06:54:25Z |
| format | Article |
| id | doaj.art-ce745a41ef164269ae02c79768a27a9f |
| institution | Directory Open Access Journal |
| issn | 1943-0655 |
| language | English |
| last_indexed | 2024-12-17T06:54:25Z |
| publishDate | 2022-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj.art-ce745a41ef164269ae02c79768a27a9f2022-12-21T21:59:28ZengIEEEIEEE Photonics Journal1943-06552022-01-011421610.1109/JPHOT.2022.31499989709580High-Extinction-Ratio and Compact 1310/1550 nm Wavelength Diplexer on SOI Platform Based on an SWG-Structured Two-Mode Interference CouplerJinsong Zhang0https://orcid.org/0000-0002-1340-5037Luhua Xu1https://orcid.org/0000-0002-9330-2600Deng Mao2https://orcid.org/0000-0003-3869-2287Zhenping Xing3https://orcid.org/0000-0001-8904-5253Yannick DrMello4https://orcid.org/0000-0001-7922-7475Maxime Jacques5https://orcid.org/0000-0002-7933-6484Yun Wang6https://orcid.org/0000-0002-7872-3976Stephane Lessard7David V. Plant8Photonics System Group, Department of Electrical and Computer Engineering, McGill University, Montreal, QC, CanadaCMC Microsystems, Kingston, ON, CanadaPhotonics System Group, Department of Electrical and Computer Engineering, McGill University, Montreal, QC, CanadaPhotonics System Group, Department of Electrical and Computer Engineering, McGill University, Montreal, QC, CanadaPhotonics System Group, Department of Electrical and Computer Engineering, McGill University, Montreal, QC, CanadaPhotonics System Group, Department of Electrical and Computer Engineering, McGill University, Montreal, QC, CanadaPhotonics System Group, Department of Electrical and Computer Engineering, McGill University, Montreal, QC, CanadaEricsson Canada, Montreal, QC, CanadaPhotonics System Group, Department of Electrical and Computer Engineering, McGill University, Montreal, QC, CanadaWe propose a 1310/1550 nm wavelength diplexer on a 220-nm silicon-on-insulator (SOI) platform. The device is based on a compact two-mode interference (TMI) coupler enabled by a subwavelength grating (SWG) slot. The ideal beat length ratio of 2:1 is achieved with the transverse magnetic (TM) mode by fine-tuning the SWG slot parameters, resulting in a TMI length of only 37 µm. We reveal that the key to high extinction ratio (ER) is the careful design of the tapers, and the device achieves high ERs of 28.05/42.54 dB at 1310/1550 nm with simulation. The measured bandwidths for ER <inline-formula><tex-math notation="LaTeX">$>$</tex-math></inline-formula> 15 dB are 82 nm and 56 nm at O- and C-band. Moreover, the design guarantees large calculated 1-dB-insertion-loss (IL) bandwidths of 192/123 nm at 1310/1550 nm. To the best of our knowledge, this is the first experimental demonstration of a high-performance compact silicon 1310/1550 nm diplexer based on a TMI coupler.https://ieeexplore.ieee.org/document/9709580/Waveguide devicessilicon nanophotonicssubwavelength structures |
| spellingShingle | Jinsong Zhang Luhua Xu Deng Mao Zhenping Xing Yannick DrMello Maxime Jacques Yun Wang Stephane Lessard David V. Plant High-Extinction-Ratio and Compact 1310/1550 nm Wavelength Diplexer on SOI Platform Based on an SWG-Structured Two-Mode Interference Coupler IEEE Photonics Journal Waveguide devices silicon nanophotonics subwavelength structures |
| title | High-Extinction-Ratio and Compact 1310/1550 nm Wavelength Diplexer on SOI Platform Based on an SWG-Structured Two-Mode Interference Coupler |
| title_full | High-Extinction-Ratio and Compact 1310/1550 nm Wavelength Diplexer on SOI Platform Based on an SWG-Structured Two-Mode Interference Coupler |
| title_fullStr | High-Extinction-Ratio and Compact 1310/1550 nm Wavelength Diplexer on SOI Platform Based on an SWG-Structured Two-Mode Interference Coupler |
| title_full_unstemmed | High-Extinction-Ratio and Compact 1310/1550 nm Wavelength Diplexer on SOI Platform Based on an SWG-Structured Two-Mode Interference Coupler |
| title_short | High-Extinction-Ratio and Compact 1310/1550 nm Wavelength Diplexer on SOI Platform Based on an SWG-Structured Two-Mode Interference Coupler |
| title_sort | high extinction ratio and compact 1310 1550 nm wavelength diplexer on soi platform based on an swg structured two mode interference coupler |
| topic | Waveguide devices silicon nanophotonics subwavelength structures |
| url | https://ieeexplore.ieee.org/document/9709580/ |
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