Adiabaticity Engineered Silicon Coupler With Design-Intended Splitting Ratio
We design and experimentally demonstrate compact and robust adiabaticity engineered couplers (AECs) with design intended splitting ratios (SRs) for the silicon-on-insulator platform. Adiabatic couplers (ACs) with variable SRs can be designed by output waveguide width-differences. By analyzing the mo...
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IEEE
2024-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/10487104/ |
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| author | Chih-Hsien Chen Yu-Fang Lo Guan-Xun Lu Yung-Jr Hung Shuo-Yen Tseng |
| author_facet | Chih-Hsien Chen Yu-Fang Lo Guan-Xun Lu Yung-Jr Hung Shuo-Yen Tseng |
| author_sort | Chih-Hsien Chen |
| collection | DOAJ |
| description | We design and experimentally demonstrate compact and robust adiabaticity engineered couplers (AECs) with design intended splitting ratios (SRs) for the silicon-on-insulator platform. Adiabatic couplers (ACs) with variable SRs can be designed by output waveguide width-differences. By analyzing the mode-evolution region of ACs, we redistribute the adiabaticity parameter by engineering the taper function to obtain fast quasiadiabatic evolution, thus reducing the device footprints. AECs with design-intended SRs exhibit broad bandwidth and robustness against fabrication variations. We experimentally demonstrate compact AECs with average SRs of 22%/78% and 15%/85% with mode-evolution lengths of 42 <inline-formula><tex-math notation="LaTeX">$\mu$</tex-math></inline-formula>m and 25 <inline-formula><tex-math notation="LaTeX">$\mu$</tex-math></inline-formula>m over a bandwidth of 70 nm, i.e., from 1500 to 1570 for the fundamental transverse electric (TE) mode. |
| format | Article |
| id | doaj-art-6280d96ce86f4b4297e82d5fdf9cc012 |
| institution | Kabale University |
| issn | 1943-0655 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-6280d96ce86f4b4297e82d5fdf9cc0122025-01-24T00:00:13ZengIEEEIEEE Photonics Journal1943-06552024-01-011621510.1109/JPHOT.2024.338343910487104Adiabaticity Engineered Silicon Coupler With Design-Intended Splitting RatioChih-Hsien Chen0Yu-Fang Lo1Guan-Xun Lu2Yung-Jr Hung3https://orcid.org/0000-0002-2132-2135Shuo-Yen Tseng4https://orcid.org/0000-0002-3765-9015Department of Photonics and the Miniaturized Photonic Gyroscope Research Center, National Sun Yat-sen University, Kaohsiung, TaiwanDepartment of Photonics, National Cheng Kung University, Tainan, TaiwanDepartment of Photonics, National Cheng Kung University, Tainan, TaiwanDepartment of Photonics and the Miniaturized Photonic Gyroscope Research Center, National Sun Yat-sen University, Kaohsiung, TaiwanDepartment of Photonics, National Cheng Kung University, Tainan, TaiwanWe design and experimentally demonstrate compact and robust adiabaticity engineered couplers (AECs) with design intended splitting ratios (SRs) for the silicon-on-insulator platform. Adiabatic couplers (ACs) with variable SRs can be designed by output waveguide width-differences. By analyzing the mode-evolution region of ACs, we redistribute the adiabaticity parameter by engineering the taper function to obtain fast quasiadiabatic evolution, thus reducing the device footprints. AECs with design-intended SRs exhibit broad bandwidth and robustness against fabrication variations. We experimentally demonstrate compact AECs with average SRs of 22%/78% and 15%/85% with mode-evolution lengths of 42 <inline-formula><tex-math notation="LaTeX">$\mu$</tex-math></inline-formula>m and 25 <inline-formula><tex-math notation="LaTeX">$\mu$</tex-math></inline-formula>m over a bandwidth of 70 nm, i.e., from 1500 to 1570 for the fundamental transverse electric (TE) mode.https://ieeexplore.ieee.org/document/10487104/Adiabatic coupleradiabaticity engineeringwaveguide devicessilicon photonics |
| spellingShingle | Chih-Hsien Chen Yu-Fang Lo Guan-Xun Lu Yung-Jr Hung Shuo-Yen Tseng Adiabaticity Engineered Silicon Coupler With Design-Intended Splitting Ratio IEEE Photonics Journal Adiabatic coupler adiabaticity engineering waveguide devices silicon photonics |
| title | Adiabaticity Engineered Silicon Coupler With Design-Intended Splitting Ratio |
| title_full | Adiabaticity Engineered Silicon Coupler With Design-Intended Splitting Ratio |
| title_fullStr | Adiabaticity Engineered Silicon Coupler With Design-Intended Splitting Ratio |
| title_full_unstemmed | Adiabaticity Engineered Silicon Coupler With Design-Intended Splitting Ratio |
| title_short | Adiabaticity Engineered Silicon Coupler With Design-Intended Splitting Ratio |
| title_sort | adiabaticity engineered silicon coupler with design intended splitting ratio |
| topic | Adiabatic coupler adiabaticity engineering waveguide devices silicon photonics |
| url | https://ieeexplore.ieee.org/document/10487104/ |
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