학술논문
High Directivity, Vertical Fiber-to-Chip Coupler with Anisotropically Radiating Grating Teeth
Document Type
Conference
Source
2007 Conference on Lasers and Electro-Optics (CLEO) Lasers and Electro-Optics, 2007. CLEO 2007. Conference on. :1-2 May, 2007
Subject
Language
ISSN
2160-9004
Abstract
Efficient vertical grating-coupler designs are proposed that allow near 50:1 up/down directivity using only two lithographic layers, without top/bottom mirrors, in high-index-contrast silicon waveguides. FDTD simulations predict single-mode-fiber-coupling efficiencies of 75% even for non-apodized gratings.