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Bottom to in-plane grating coupler with high coupling efficiency and directionality
Author(s): Yixin Chen ; Bin Ai ; Elham Heidari; Bonnie J. Dunbar; Volker J. Sorger; Zi Jing Wong; Ray T. Chen; Hamed Dalir
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Paper Abstract

Here, we have presented the first design of a bottom to in-plane grating coupler with a high coupling efficiency and directionality. The grating coupler consists of a high contrast grating (HCG) and an etched silicon-on-insulator (SOI) grating device. The final coupling efficiency is 82.2% at 1.55µm, with a 57nm 3dB bandwidth, and the directionality is 14:1 (left to right ratio). This grating coupler can be further optimized with different low index materials. This grating coupler could work as the vertical to in-plane coupler for the label free silicon photonic bio-sensor.

Paper Details

Date Published: 18 March 2019
PDF: 1 pages
Proc. SPIE 10917, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XII, 109171X (18 March 2019); doi: 10.1117/12.2510839
Show Author Affiliations
Yixin Chen , Texas A&M Univ. (United States)
Bin Ai , Texas A&M Univ. (United States)
Elham Heidari, The Univ. of Texas at Austin (United States)
Bonnie J. Dunbar, Texas A&M Univ. (United States)
Volker J. Sorger, The George Washington Univ. (United States)
Zi Jing Wong, Texas A&M Univ. (United States)
Ray T. Chen, The Univ. of Texas at Austin (United States)
Hamed Dalir, Omega Optics, Inc. (United States)


Published in SPIE Proceedings Vol. 10917:
Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XII
Laurence P. Sadwick; Tianxin Yang, Editor(s)

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