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Proceedings Paper

A four-port vertical-coupling optical interface based on two-dimensional grating coupler
Author(s): Zan Zhang; Zanyun Zhang; Beiju Huang; Chuantong Cheng; Tianxi Gao; Xiaochuan Hu; Lin Zhang; Hongda Chen
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Paper Abstract

In this work, a fiber-to-chip optical interface with four output ports is proposed. External lights irradiate vertically from single mode fiber to the center of optical interface can be coupled into silicon photonic chips and split into four siliconon- insulator (SOI) waveguides. If the light is circular polarized, the power of light will be equally split into four ports. Meanwhile, all lights travel in the four channel will be converted into TE polarization. The optical interface is based on a two-dimensional grating coupler with carefully designed duty cycle and period. Simulation results show that the coupling efficiency of each port can reach 11.6% so that the total coupling efficiency of the interface is 46.4%. And Lights coupled into four waveguides are all converted into TE polarization. Further, the optical interface has a simple grating structure allowing for easy fabrication.

Paper Details

Date Published: 31 October 2016
PDF: 6 pages
Proc. SPIE 10019, Optoelectronic Devices and Integration VI, 100191E (31 October 2016); doi: 10.1117/12.2246478
Show Author Affiliations
Zan Zhang, Chang'an Univ. (China)
Institute of Semiconductors (China)
Zanyun Zhang, Tianjin Polytechnic Univ. (China)
Institute of Semiconductors (China)
Beiju Huang, Institute of Semiconductors (China)
Chuantong Cheng, Institute of Semiconductors (China)
Tianxi Gao, Chang'an Univ. (China)
Xiaochuan Hu, Chang'an Univ. (China)
Lin Zhang, Chang'an Univ. (China)
Hongda Chen, Institute of Semiconductors (China)

Published in SPIE Proceedings Vol. 10019:
Optoelectronic Devices and Integration VI
Xuping Zhang; Baojun Li; Changyuan Yu, Editor(s)

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