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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doaj-59ee6a94a9b74616b218a0902a7e2bae2021-03-29T17:55:15ZengIEEEIEEE 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. |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Tatsuhiko Watanabe Yuriy Fedoryshyn Juerg Leuthold |
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. |
author_facet |
Tatsuhiko Watanabe Yuriy Fedoryshyn Juerg Leuthold |
author_sort |
Tatsuhiko Watanabe |
title |
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_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_sort |
2-d grating couplers for vertical fiber coupling in two polarizations |
publisher |
IEEE |
series |
IEEE Photonics Journal |
issn |
1943-0655 |
publishDate |
2019-01-01 |
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. |
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 |
_version_ |
1724197050015285248 |