Compact Broadband Directional Couplers Using Subwavelength Gratings
We experimentally demonstrate compact broadband directional couplers using subwavelength gratings for silicon-on-insulator wafers with silicon layers of 220 nm. The dispersion properties of the optical modes are engineered using subwavelength gratings, which allow broadband operation. Finite-differe...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IEEE
2016-01-01
|
| Series: | IEEE Photonics Journal |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/7480755/ |
| id |
doaj-121dfb0c5f31441d81e15eef17ecb432 |
|---|---|
| record_format |
Article |
| spelling |
doaj-121dfb0c5f31441d81e15eef17ecb4322021-03-29T17:33:31ZengIEEEIEEE Photonics Journal1943-06552016-01-01831810.1109/JPHOT.2016.25743357480755Compact Broadband Directional Couplers Using Subwavelength GratingsYun Wang0Zeqin Lu1Minglei Ma2Han Yun3Fan Zhang4Nicolas A. F. Jaeger5Lukas Chrostowski6Electrical and Computer Engineering, University of British Columbia, Vancouver, BC, CanadaElectrical and Computer Engineering, University of British Columbia, Vancouver, BC, CanadaElectrical and Computer Engineering, University of British Columbia, Vancouver, BC, CanadaElectrical and Computer Engineering, University of British Columbia, Vancouver, BC, CanadaElectrical and Computer Engineering, University of British Columbia, Vancouver, BC, CanadaElectrical and Computer Engineering, University of British Columbia, Vancouver, BC, CanadaElectrical and Computer Engineering, University of British Columbia, Vancouver, BC, CanadaWe experimentally demonstrate compact broadband directional couplers using subwavelength gratings for silicon-on-insulator wafers with silicon layers of 220 nm. The dispersion properties of the optical modes are engineered using subwavelength gratings, which allow broadband operation. Finite-difference time-domain (FDTD)-based band structure calculations, with significantly reduced simulation time, were used to analyze the design, which included both the structure and material dispersions. Compact broadband direction couplers, with device lengths shorter than 14 <inline-formula> <tex-math notation="LaTeX">$\mu\text{m}$</tex-math></inline-formula>, which cover a bandwidth of 100 nm for power splitting ratios of 50/50, 40/60, 30/70, and 20/80, are designed and fabricated for the fundamental transverse electric mode with a central operating wavelength of 1550 nm.https://ieeexplore.ieee.org/document/7480755/Subwavelength structuresWaveguide devices |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Yun Wang Zeqin Lu Minglei Ma Han Yun Fan Zhang Nicolas A. F. Jaeger Lukas Chrostowski |
| spellingShingle |
Yun Wang Zeqin Lu Minglei Ma Han Yun Fan Zhang Nicolas A. F. Jaeger Lukas Chrostowski Compact Broadband Directional Couplers Using Subwavelength Gratings IEEE Photonics Journal Subwavelength structures Waveguide devices |
| author_facet |
Yun Wang Zeqin Lu Minglei Ma Han Yun Fan Zhang Nicolas A. F. Jaeger Lukas Chrostowski |
| author_sort |
Yun Wang |
| title |
Compact Broadband Directional Couplers Using Subwavelength Gratings |
| title_short |
Compact Broadband Directional Couplers Using Subwavelength Gratings |
| title_full |
Compact Broadband Directional Couplers Using Subwavelength Gratings |
| title_fullStr |
Compact Broadband Directional Couplers Using Subwavelength Gratings |
| title_full_unstemmed |
Compact Broadband Directional Couplers Using Subwavelength Gratings |
| title_sort |
compact broadband directional couplers using subwavelength gratings |
| publisher |
IEEE |
| series |
IEEE Photonics Journal |
| issn |
1943-0655 |
| publishDate |
2016-01-01 |
| description |
We experimentally demonstrate compact broadband directional couplers using subwavelength gratings for silicon-on-insulator wafers with silicon layers of 220 nm. The dispersion properties of the optical modes are engineered using subwavelength gratings, which allow broadband operation. Finite-difference time-domain (FDTD)-based band structure calculations, with significantly reduced simulation time, were used to analyze the design, which included both the structure and material dispersions. Compact broadband direction couplers, with device lengths shorter than 14 <inline-formula> <tex-math notation="LaTeX">$\mu\text{m}$</tex-math></inline-formula>, which cover a bandwidth of 100 nm for power splitting ratios of 50/50, 40/60, 30/70, and 20/80, are designed and fabricated for the fundamental transverse electric mode with a central operating wavelength of 1550 nm. |
| topic |
Subwavelength structures Waveguide devices |
| url |
https://ieeexplore.ieee.org/document/7480755/ |
| work_keys_str_mv |
AT yunwang compactbroadbanddirectionalcouplersusingsubwavelengthgratings AT zeqinlu compactbroadbanddirectionalcouplersusingsubwavelengthgratings AT mingleima compactbroadbanddirectionalcouplersusingsubwavelengthgratings AT hanyun compactbroadbanddirectionalcouplersusingsubwavelengthgratings AT fanzhang compactbroadbanddirectionalcouplersusingsubwavelengthgratings AT nicolasafjaeger compactbroadbanddirectionalcouplersusingsubwavelengthgratings AT lukaschrostowski compactbroadbanddirectionalcouplersusingsubwavelengthgratings |
| _version_ |
1724197578774413312 |