High Efficiency and Broadband Two-Dimensional Blazed Grating Coupler With Fully Etched Triangular Holes
Journal of Lightwave Technology, Vol. 30, Issue 14, pp. 2363-2366 (2012)
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Abstract
A 2-D blazed grating coupler with fully etched triangular holes to realize high efficient and broadband coupling between silicon-on-insulator nanowaveguide and fiber is proposed. By changing the lateral width of a triangular hole along propagating direction in each single grating period gradually according to effective medium theory, a high coupling efficiency of -2.78 dB and an extremely large 1 dB bandwidth of 180 nm are achieved simultaneously. By optimizing the buried oxide thickness from 2 to 1.83 μm, the coupling efficiency can be further improved to -2.18 dB and 1 dB bandwidth is enlarged to 290 nm.
© 2012 IEEE
Citation
Kun Qin, Dingshan Gao, Changjing Bao, Zhe Zhao, Xu Zhou, Tingting Lu, and Lin Chen, "High Efficiency and Broadband Two-Dimensional Blazed Grating Coupler With Fully
Etched Triangular Holes," J. Lightwave Technol. 30, 2363-2366 (2012)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-30-14-2363
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