Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
  • Chinese Optics Letters
  • Vol. 17,
  • Issue 3,
  • pp. 030501-
  • (2019)

Grating coupler efficiency enhancement by double layer interference

Not Accessible

Your library or personal account may give you access

Abstract

A simple method for improving grating couplers’ coupling efficiency without any extra microfabrication processes is proposed. This method can improve the coupling efficiency with 1.69 dB by utilizing the combined interference in the cladding layer and air gap between the cladding surface and the paralleled angle polished fiber facet. The proposed method can be applied to various kinds of on-chip grating couplers. Back reflection, 1 dB bandwidth, and fiber alignment tolerance have also been improved at the same time.

© 2019 Chinese Laser Press

PDF Article
More Like This
CMOS-compatible high efficiency double-etched apodized waveguide grating coupler

Chao Li, Huijuan Zhang, Mingbin Yu, and G. Q. Lo
Opt. Express 21(7) 7868-7874 (2013)

Highly efficient and perfectly vertical chip-to-fiber dual-layer grating coupler

Ming Dai, Leilei Ma, Yelong Xu, Minghui Lu, Xiaoping Liu, and Yanfeng Chen
Opt. Express 23(2) 1691-1698 (2015)

High-efficiency wideband SiNx-on-SOI grating coupler with low fabrication complexity

Pengfei Xu, Yanfeng Zhang, Zengkai Shao, Lin Liu, Lidan Zhou, Chunchuan Yang, Yujie Chen, and Siyuan Yu
Opt. Lett. 42(17) 3391-3394 (2017)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved