Adjoint Optimization of Efficient CMOS-Compatible Si-SiN Vertical Grating Couplers for DWDM Applications
| Autor: | Sagi Mathai, Zhihong Huang, Sean Hooten, Thomas Van Vaerenbergh, Peng Sun, Raymond G. Beausoleil |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Silicon photonics Silicon business.industry Optical link Silicon on insulator chemistry.chemical_element Hardware_PERFORMANCEANDRELIABILITY Grating Atomic and Molecular Physics and Optics CMOS chemistry Wavelength-division multiplexing Hardware_INTEGRATEDCIRCUITS Insertion loss Optoelectronics business |
| Zdroj: | Journal of Lightwave Technology. 38:3422-3430 |
| ISSN: | 1558-2213 0733-8724 |
| DOI: | 10.1109/jlt.2020.2969097 |
| Popis: | Data communication in silicon photonic interconnects requires efficient and broadband on/off-chip coupling components. Recently, perfectly vertically-emitting grating couplers have been proposed to increase spatial I/O density of the optical link and potentially improve manufacturing costs and ease of optical beam characterization. In this article, adjoint optimization was leveraged in the design of low-loss single (silicon) and dual layer (silicon + silicon nitride) perfectly-vertical grating couplers that are compatible with a scalable silicon-on-insulator (SOI) platform for the 65 nm CMOS technology node. In simulation, the best design peaks at −0.52 dB insertion loss with a 1 dB-bandwidth of 24 nm at the 1310 nm datacom wavelength. |
| Databáze: | OpenAIRE |
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