硅基波导光栅耦合器与波导传输损耗的研究

发布时间：2019-01-19 20:26

【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2.34dB/cm和6.31dB/mm。
[Abstract]:The design and coupling performance of silicon (Si) based waveguide grating coupler are studied. The grating coupler is designed and optimized by the intrinsic mode expansion method. The coupling performance of the grating is measured experimentally, and the coupling performance of three grating couplers, namely uniform grating, self-focusing grating and reflection grating, is compared. The coupling efficiency reaches 47.86 and 48.98 respectively. The self-focusing grating can effectively improve the transmission effect of fiber to fiber, and the coupling efficiency increases 8.5%. The transmission loss of Si base strip waveguide and slot waveguide based on coupled grating technique is measured experimentally. The results show that the transmission loss of strip waveguide and slot waveguide are 2.34dB/cm and 6.31 dB / mmm.
【作者单位】：武汉理工大学航运学院;武汉理工大学信息工程学院;
【基金】：国家自然科学基金青年基金(61301167)资助项目
【分类号】：TN256;TN622

【相似文献】