상세정보
학술지
A Leaky-Mode Directional Coupler for Waveguide Grating Lens
- 발행일
- 200508
- 출처
- Optics Communications, v.252 no.4-6, pp.292-300
- ISSN
- 0030-4018
- 출판사
- Elsevier
- 협약과제
- 05MB3200, 초소형 초대용량 모바일 저장장치(초소형 광 헤드 및 테라비트급 하이브리드 헤드 핵심기술 개발), 강광용
- 초록
- A leaky-mode directional coupler, based on a multi-layered slab waveguide, was designed to obtain an output beam with single radiation angle emerging from the waveguide for the sake of highly efficient focusing waveguide grating coupler (FWGC). An inner cladding in the waveguide was adopted to facilitate the effective power leakage of the propagating leaky mode. The ratio of the output to the input beam that was analyzed using the beam propagation method was estimated to be 99% for 1 mm coupler length. Eventually, we obtained a Gaussian-like intensity profile of the output beam. © 2005 Elsevier B.V. All rights reserved.
- KSP 제안 키워드
- Effective power, Intensity profile, Power leakage, Slab waveguide, Waveguide grating coupler, beam propagation method, directional coupler(DC), highly efficient, leaky mode