期刊
OPTICS LETTERS
卷 44, 期 4, 页码 815-818出版社
Optica Publishing Group
DOI: 10.1364/OL.44.000815
关键词
-
类别
资金
- Ministry of Science and Technology, Taiwan (MOST) [105-2221-E-006-151-MY3, 106-2221-E-110-060-MY3, 107-2218-E-110-016, 107-3113-M-110-001]
We report a 2 x 2 broadband and fabrication tolerant mode-evolution-based 3 dB coupler based on silicon-oninsulator rib waveguides. The operating principle of the coupler is based on the adiabatic evolution of local eigenmodes. The key element of the device is an adiabatically tapered mode evolution region, which converts two dissimilar waveguides into two identical waveguides. Contrary to conventional designs using a linear taper function where the device adiabaticity is uneven during evolution, we use the fast quasiadiabatic approach to homogenize the adiabaticity of the device, leading to a shortcut to adiabaticity. Devices with an optimized taper region of 26.3 mu m are designed and fabricated in a complementary metal-oxide-semiconductor compatible process with 193 nm deep ultraviolet lithography. The measured devices exhibit a broadband 3 dB +/- 0.5 dB splitting within a bandwidth of 100 nm, uniformly across a 200-mm wafer, showing good tolerance against fabrication variations. (C) 2019 Optical Society of America
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据