상세정보
학술지
Performance Improvement in Silicon Arrayed Waveguide Grating by Suppression of Scattering Near the Boundary of a Star Coupler
- 발행일
- 201506
- 출처
- Applied Optics, v.54 no.17, pp.5597-5602
- ISSN
- 1559-128X
- 출판사
- Optical Society of America (OSA)
- 협약과제
- 14MB1300, 실리콘 나노포토닉스 기반 차세대 컴퓨터 인터페이스 플랫폼 원천기술 개발, 김경옥
- 초록
- We investigate the reduction of transition loss across the star coupler boundary in a silicon arrayed waveguide grating (AWG) by suppressing multimode generation and scattering near the boundary of a star coupler. Eightchannel silicon AWGs were designed with optimal conditions based on enhanced field matching in combination with ultrashallow etched structures. The fabricated AWG demonstrates an insertion loss down to 0.63 dB with a cross talk of -23 to -25.3 dB, exhibiting ~0.8 dB improvement of insertion loss and ~4 dB improvement of cross talk compared to the Si AWG fabricated with a conventional double-etch technique.
- KSP 제안 키워드
- Cross Talk, Enhanced field, Field matching, Optimal conditions, Transition loss, arrayed waveguide grating(AWG), insertion loss, performance improvement