Design and analysis of a highly efficient coupler between a micro/nano optical fiber and an SOI waveguide.
A compact coupling structure is proposed for highly efficient coupling between a micro/nano fiber and a silicon-on-insulator waveguide. The proposed structure is characterized by high coupling efficiency, wavelength insensitivity, large misalignment tolerance, and easy fabrication. Theoretical analysis and numerical simulation results show that coupling efficiency of >90% can be achieved with a taper length of ∼4.5  μm.
State Key Laboratory of Advanced Optical Communication Systems and Networks, Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
Zehua
Z
Hong
Linjie
L
Zhou
Xinwan
X
Li
Weiwen
W
Zou
Xiaomeng
X
Sun
Shuguang
S
Li
Jianguo
J
Shen
Haimei
H
Luo
Jianping
J
Chen