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...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IEEE
2024-01-01
|
| Series: | IEEE Photonics Journal |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/10487104/ |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | 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. |
|---|---|
| ISSN: | 1943-0655 |