Novel Slanted Grating Coupler for Vertical Coupling

2016 ◽  
Author(s):  
Guo Yanan ◽  
Huang Yongqing ◽  
Liu Youxin ◽  
Duan Xiaofeng ◽  
Liu Kai ◽  
...  
Keyword(s):  
Grating Coupler ◽  
Vertical Coupling

A four-port vertical-coupling optical interface based on two-dimensional grating coupler

2016 ◽  
Author(s):  
Zan Zhang ◽  
Zanyun Zhang ◽  
Beiju Huang ◽  
Chuantong Cheng ◽  
Tianxi Gao ◽  
...  
Keyword(s):  
Grating Coupler ◽  
Two Dimensional ◽  
Vertical Coupling

InP grating coupler design for vertical coupling of InP and silicon chips

2020 ◽  
Author(s):  
Yingheng Tang ◽  
Keisuke Kojima ◽  
Mitsunobu Gotoda ◽  
Satoshi Nishikawa ◽  
Shusaku Hayashi ◽  
...  
Keyword(s):  
Grating Coupler ◽  
Silicon Chips ◽  
Vertical Coupling

Design of High Efficiency Grating Coupler for Vertical Coupling

2013 ◽  
Vol 42 (7) ◽  
pp. 777-781
Author(s):  
武华 WU Hua ◽  
郭霞 GUO Xia ◽  
韩明夫 HAN Ming-fu
Keyword(s):  
High Efficiency ◽  
Grating Coupler ◽  
Vertical Coupling

scholarly journals Efficiency Enhanced Grating Coupler for Perfectly Vertical Fiber-to-Chip Coupling

Materials ◽  
2020 ◽  
Vol 13 (12) ◽  
pp. 2681 ◽  
Author(s):  
Zan Zhang ◽  
Xiaotao Shan ◽  
Beiju Huang ◽  
Zanyun Zhang ◽  
Chuantong Cheng ◽  
...  
Keyword(s):  
Wavelength Division Multiplexing ◽  
Coupling Efficiency ◽  
Optical Power ◽  
Wide Band ◽  
Cost Effective ◽  
Grating Coupler ◽  
Wavelength Division ◽  
Si3n4 Layer ◽  
Vertical Coupling ◽  
193 Nm

In this work, a bidirectional grating coupler for perfectly vertical coupling is proposed. The coupling efficiency is enhanced using a silicon nitride (Si3N4) layer above a uniform grating. In the presence of Si3N4 layer, the back-reflected optical power into the fiber is diminished and coupling into the waveguide is increased. Genetic algorithm (GA) is used to optimize the grating and Si3N4 layer simultaneously. The optimal design obtained from GA shows that the average in-plane coupling efficiency is enhanced from about 57.5% (−2.5 dB) to 68.5% (−1.65 dB), meanwhile the average back-reflection in the C band is reduced from 17.6% (−7.5 dB) to 7.4% (−11.3 dB). With the help of a backside metal mirror, the average coupling efficiency and peak coupling efficiency are further increased to 87% (−0.6 dB) and 89.4% (−0.49 dB). The minimum feature size of the designed device is 266 nm, which makes our design easy to fabricate through 193 nm deep-UV lithography and lowers the fabrication cost. In addition, the coupler proposed here shows a wide-band character with a 1-dB bandwidth of 64 nm and 3-dB bandwidth of 96 nm. Such a grating coupler design can provide an efficient and cost-effective solution for vertical fiber-to-chip optical coupling of a Wavelength Division Multiplexing (WDM) application.

scholarly journals High-efficiency apodized bidirectional grating coupler for perfectly vertical coupling

2019 ◽  
Vol 44 (20) ◽  
pp. 5081 ◽  
Author(s):  
Zanyun Zhang ◽  
Xia Chen ◽  
Qian Cheng ◽  
Ali Z. Khokhar ◽  
Xingzhao Yan ◽  
...  
Keyword(s):  
High Efficiency ◽  
Grating Coupler ◽  
Vertical Coupling

Fully vertical-coupling and one-step etching subwavelength binary blazed grating coupler

2017 ◽  
Author(s):  
Junbo Yang ◽  
Wenjun Wu ◽  
Jie Huang ◽  
Dingbo Chen ◽  
Jingjing Zhang
Keyword(s):  
Grating Coupler ◽  
Blazed Grating ◽  
Vertical Coupling ◽  
One Step

High-performance and compact binary blazed grating coupler based on an asymmetric subgrating structure and vertical coupling

2011 ◽  
Vol 36 (14) ◽  
pp. 2614 ◽  
Author(s):  
Junbo Yang ◽  
Zhiping Zhou ◽  
Honghui Jia ◽  
Xueao Zhang ◽  
ShiQiao Qin
Keyword(s):  
High Performance ◽  
Grating Coupler ◽  
Blazed Grating ◽  
Vertical Coupling ◽  
Compact Binary
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