A Novel Design of Grating Couplers for Efficient Broadband Coupling between Silicon-on-Insulator Nanophotonic Waveguides and Fibres
YU He-Jun, YU Jin-Zhong
State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences,
Beijing 100083
A Novel Design of Grating Couplers for Efficient Broadband Coupling between Silicon-on-Insulator Nanophotonic Waveguides and Fibres
YU He-Jun;YU Jin-Zhong
State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences,
Beijing 100083
关键词 ：
42.82.Ds ,
42.82.Et
Abstract ： A novel design of out-of-plane grating couplers is proposed for coupling between silicon-on-insulator nanophotonic waveguides and single-mode fibres. The coupler with the first-order diffraction coupling to the optical fibre is actually a second-order reflected grating with two times of period of the first-order grating. To enhance outcoupled power, a back hole is designed to form in the silicon substrate and a kind of metals is placed on the top acting as a reflection layer. The coupler is optimized using coupled-mode-based simulations, showing that the coupling efficiency to and from tapered optical fibre can be as high as 85% with 1dB bandwidth about 23nm.
Key words ：
42.82.Ds
42.82.Et
出版日期: 2005-11-01
:
42.82.Ds
(Interconnects, including holographic interconnects)
42.82.Et
(Waveguides, couplers, and arrays)
引用本文:
YU He-Jun;YU Jin-Zhong. A Novel Design of Grating Couplers for Efficient Broadband Coupling between Silicon-on-Insulator Nanophotonic Waveguides and Fibres[J]. 中国物理快报, 2005, 22(11): 2865-2868.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2005/V22/I11/2865
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2005, Vol. 22 
