2-D Grating Couplers for Vertical Fiber Coupling in Two Polarizations
We demonstrate highly efficient couplers in a two-dimensional grating configuration for a vertical fiber-coupling fabricated in the silicon-on-insulator platform. A combination of sub-wavelength reflectors and blazed gratings enables both high coupling efficiency and vertical grating coupling. We ex...
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IEEE
2019-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/8755389/ |
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| author | Tatsuhiko Watanabe Yuriy Fedoryshyn Juerg Leuthold |
| author_facet | Tatsuhiko Watanabe Yuriy Fedoryshyn Juerg Leuthold |
| author_sort | Tatsuhiko Watanabe |
| collection | DOAJ |
| description | We demonstrate highly efficient couplers in a two-dimensional grating configuration for a vertical fiber-coupling fabricated in the silicon-on-insulator platform. A combination of sub-wavelength reflectors and blazed gratings enables both high coupling efficiency and vertical grating coupling. We experimentally achieve coupling efficiencies of −2.6 dB at 1544 nm and −3.4 dB at 1536 nm for x- and y-polarized LP01 modes, respectively. The experimental results are in good agreement with the simulated −2.4 dB coupling efficiency for both polarizations at a wavelength of 1550 nm. Simulated and measured crosstalk between two polarizations were −19 dB and <−16 dB, respectively. |
| format | Article |
| id | doaj-art-59ee6a94a9b74616b218a0902a7e2bae |
| institution | DOAJ |
| issn | 1943-0655 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-59ee6a94a9b74616b218a0902a7e2bae2025-08-20T03:16:04ZengIEEEIEEE Photonics Journal1943-06552019-01-011141910.1109/JPHOT.2019.292682387553892-D Grating Couplers for Vertical Fiber Coupling in Two PolarizationsTatsuhiko Watanabe0https://orcid.org/0000-0001-9958-8737Yuriy Fedoryshyn1Juerg Leuthold2https://orcid.org/0000-0003-0111-8169Institute of Electromagnetics Fields, Zurich, SwitzerlandInstitute of Electromagnetics Fields, Zurich, SwitzerlandInstitute of Electromagnetics Fields, Zurich, SwitzerlandWe demonstrate highly efficient couplers in a two-dimensional grating configuration for a vertical fiber-coupling fabricated in the silicon-on-insulator platform. A combination of sub-wavelength reflectors and blazed gratings enables both high coupling efficiency and vertical grating coupling. We experimentally achieve coupling efficiencies of −2.6 dB at 1544 nm and −3.4 dB at 1536 nm for x- and y-polarized LP01 modes, respectively. The experimental results are in good agreement with the simulated −2.4 dB coupling efficiency for both polarizations at a wavelength of 1550 nm. Simulated and measured crosstalk between two polarizations were −19 dB and <−16 dB, respectively.https://ieeexplore.ieee.org/document/8755389/Grating couplerpolarization diversitysilicon photonics. |
| spellingShingle | Tatsuhiko Watanabe Yuriy Fedoryshyn Juerg Leuthold 2-D Grating Couplers for Vertical Fiber Coupling in Two Polarizations IEEE Photonics Journal Grating coupler polarization diversity silicon photonics. |
| title | 2-D Grating Couplers for Vertical Fiber Coupling in Two Polarizations |
| title_full | 2-D Grating Couplers for Vertical Fiber Coupling in Two Polarizations |
| title_fullStr | 2-D Grating Couplers for Vertical Fiber Coupling in Two Polarizations |
| title_full_unstemmed | 2-D Grating Couplers for Vertical Fiber Coupling in Two Polarizations |
| title_short | 2-D Grating Couplers for Vertical Fiber Coupling in Two Polarizations |
| title_sort | 2 d grating couplers for vertical fiber coupling in two polarizations |
| topic | Grating coupler polarization diversity silicon photonics. |
| url | https://ieeexplore.ieee.org/document/8755389/ |
| work_keys_str_mv | AT tatsuhikowatanabe 2dgratingcouplersforverticalfibercouplingintwopolarizations AT yuriyfedoryshyn 2dgratingcouplersforverticalfibercouplingintwopolarizations AT juergleuthold 2dgratingcouplersforverticalfibercouplingintwopolarizations |