| High-efficiency focusing grating coupler with optimized ultra-short taper |
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| 作者姓名： | 杨彪 李智勇 俞育德 余金中 |
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| 作者单位： | State Key Laboratory for Integrated Optoelectronics, Institute of Semiconductors,Chinese Academy of Sciences |
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| 基金项目： | Project supported by the National Basic Research Program of China （Grant No. 2011CB301701）, the National High Technology Research and Development Program of China （Grant No. 2012AA012202）, the Main Direction Program of Knowledge Innovation of the Chinese Academy of Sciences （Grant No. KGCX2- EW-102）, and the National Natural Science Foundation of China （Grant Nos. 61107048 and 61275065）. |
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| 摘 要： | A novel high-efficiency focusing non-uniform grating coupler is proposed to couple light into or off silicon photonic chips for large-scale silicon photonic integration. This kind of grating coupler decreases the transition length of the linking taper between the grating and the single-mode waveguide by at least 80%. The radian of the grating lines and the size of the taper are optimized to improve the coupling efficiency. An experimental coupling efficiency of ~ 68% at 1556.24 nm is obtained after optimization and the whole size of the grating is 12 μm × 30 μm, with a very short taper transition of ~15 μm long.
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| 关 键 词： | 光栅耦合器 最优化 超短 器具 耦合效率 光子集成 光子芯片 不均匀 |
High-efficiency focusing grating coupler with optimized ultra-short taper |
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| Yang Biao,Li Zhi-Yong,Yu Yu-De,and Yu Jin-Zhong.High-efficiency focusing grating coupler with optimized ultra-short taper[J].Chinese Physics B,2014(11):348-351. |
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| Authors: | Yang Biao Li Zhi-Yong Yu Yu-De and Yu Jin-Zhong |
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| Affiliation: | State Key Laboratory for Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China |
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| Abstract: | grating coupler, silicon photonics, photonic integrated circuits, silicon-on-insulator |
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| Keywords: | grating coupler silicon photonics photonic integrated circuits silicon-on-insulator |
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