| 硅基波导光栅耦合器与波导传输损耗的研究 |
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| 引用本文： | 谭志荣,帅浩,杜长安,葛华.硅基波导光栅耦合器与波导传输损耗的研究[J].光电子．激光,2017,28(7):700-704. |
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| 作者姓名： | 谭志荣 帅浩 杜长安 葛华 |
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| 作者单位： | 武汉理工大学 航运学院,湖北 武汉 430063,武汉理工大学 信息 工程学院,湖北 武汉 430070,武汉理工大学 信息 工程学院,湖北 武汉 430070,武汉理工大学 信息 工程学院,湖北 武汉 430070 |
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| 基金项目： | 国家自然科学基金青年基金(61301167)资助项目 (1.武汉理工大学 航运学院,湖北 武汉 430063; 2.武汉理工大学 信息 工程学院,湖北 武汉 430070) |
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| 摘 要： | 对硅(Si)基波导光栅耦合器的设计与耦合性能进 行了研究。采用本征模展开法对光栅耦合器进行设计与 优化,通过实验测量了光栅的耦合性能,并对均匀光栅、自聚焦光栅和反射光栅等3种光栅 耦合器的耦合 性能进行了比较,耦合效率分别达到了达到47.86、56. 36和48.98%,自聚焦光栅可以有效改善光纤到 光纤的传输效果,耦合效率提高了8.5%。通过实验测量了基于耦合光 栅技术的Si基条形波导和槽型波导的 传输损耗,结果显示,条形波导和槽型波导的传输损耗分别为2.34d B/cm和6.31dB/mm。
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| 关 键 词： | 波导光栅耦合器 耦合效率 垂直耦合 传输损耗 |
| 收稿时间： | 2016/11/8 0:00:00 |
Researches on silicon-based waveguide grating couplers and waveguide transmission loss |
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| TAN Zhi-rong,SHUAI Hao,DU Chang-an and GE Hua.Researches on silicon-based waveguide grating couplers and waveguide transmission loss[J].Journal of Optoelectronics·laser,2017,28(7):700-704. |
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| Authors: | TAN Zhi-rong SHUAI Hao DU Chang-an and GE Hua |
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| Affiliation: | School of Navigation,Wuhan University of Technology,Wuhan 430063,China,School of Information Engineering,Wuhan University of Technology,Wuhan 430070,C hina,School of Information Engineering,Wuhan University of Technology,Wuhan 430070,C hina and School of Information Engineering,Wuhan University of Technology,Wuhan 430070,C hina |
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| Abstract: | The design and coupling performance of the waveguide grating coupler a re studied in this paper.The grating coupler is designed and optimized by using eigenmode expansion method.T he coupling efficiencies of uniform grating coupler,self-focus grating coupler and grating coupler with a reflective part are demonstrated experimentally and compared.Their coupling efficiencies are 47.86%,56.36% and 48.98%,respectively.The self-focus grating coupler improves the coupling efficiency obviously by 8.5%. The transmission losses of slab waveguide and slot waveguide are studied by fabricating the waveguides with grat ing couplers.The transmission losses of these two waveguides are 2.34dB/cm and 6.31dB/mm,respectively. |
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| Keywords: | waveguide grating coupler coupling efficiency vertical coupling transmission loss |
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