An out-of-plane grating coupler for efficient butt-coupling between compact planar waveguides and single-mode fibers

被引：485
|
作者：
Taillaert, D [1 ]
Bogaerts, W
Bienstman, P
Krauss, TF
Van Daele, P
Moerman, I
Verstuyft, S
De Mesel, K
Baets, R
机构：
[1] Univ Ghent, IMEC, Dept Informat Technol, B-9000 Ghent, Belgium
[2] Univ St Andrews, Sch Phys & Astron, St Andrews KY16 9SS, Fife, Scotland
来源：
IEEE JOURNAL OF QUANTUM ELECTRONICS | 2002年 / 38卷 / 07期
关键词：
integrated optics; optical planar waveguide components; waveguide coupler;
D O I：
10.1109/JQE.2002.1017613
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We have designed and fabricated an out-of-plane coupler for butt-coupling from fiber to compact planar waveguides. The coupler is based on a short second-order grating or photonic crystal, etched in a waveguide with a low-index oxide cladding. The coupler is optimized using mode expansion-based simulations. Simulations using a 2-D model show that up to 74% coupling efficiency between single-mode fiber and a 240-nm-thick GaAs-AlOx waveguide is possible. We have measured 19% coupling efficiency on test structures.
引用
收藏
页码：949 / 955
页数：7
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