High-Efficiency Two-Dimensional Perfectly Vertical Grating Coupler With Ultra-Low Polarization Dependent Loss and Large Fibre Misalignment Tolerance

Zhang, ZY; Zhang, KX; Cheng, Q; Li, MX; Liu, TJ; Huang, BJ; Zhang, Z; Liu, HW; Li, HQ; Niu, PJ; Chen, HD

Huang, BJ (corresponding author), Chinese Acad Sci, Inst Semicond, State Key Lab Integrated Optoelect, Beijing 100083, Peoples R China.

IEEE JOURNAL OF QUANTUM ELECTRONICS, 2021; 57 (5):

Abstract

A two-dimensional grating coupler (2D GC) with four access waveguides is proposed and demonstrated for polarization independent and perfectly vertical......

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