| 학회 | 한국재료학회 |
| 학술대회 | 2017년 가을 (11/15 ~ 11/17, 경주 현대호텔) |
| 권호 | 23권 2호 |
| 발표분야 | 1. 고속 데이터 처리를 위한 광학 재료 및 소자(Optical Materials & Devices for High-Speed Data Management) |
| 제목 | Nanolasers on Silicon |
| 초록 | The integration of III-V lasers on silicon provides a promising route to overcoming the critical problems of light generation in silicon-based optical circuits. In recent years, silicon-based hybrid laser platforms using wafer bonding and direct growth methods have attracted much attention. However, reducing the size of those lasers to nanometer scale has been challenging due to the very inefficient coupling with silicon photonics and the difficulty of nanofabrication. In this work, we propose and demonstrate direct integration of a wavelength-scale III-V nanolaser onto a silicon-on-insulator (SOI) waveguide. By employing the high-precision micro-transfer printing techniques with an optimally designed photonic crystal nanolaser structure, we experimentally achieved a coupling efficiency of about 83% between the InGaAsP nanobeam laser and the SOI waveguide. Our III-V nanobeam laser has an asymmetric one-dimensional photonic crystal cavity that allows uni-directional coupling to the combined III-V nanobeam waveguide with high efficiency. Through the optimized 3.2-μm-long vertical coupler in the region where III-V and SOI waveguides overlap, 88% of the light from the III-V nanolaser can theoretically be coupled to an integrated SOI waveguide. |
| 저자 | 김명기1, 이정민2, 이용희2 |
| 소속 | 1고려대, 2한국과학기술원 |
| 키워드 | <P>silicon photonics; hybrid III-V/Si integration; nanolaser</P> |
