材料科学
波导管
光学
耦合损耗
光电子学
纤维
光子晶体光纤
光纤
联轴节(管道)
氮化硅
塑料光纤
硅
波长
光纤传感器
物理
冶金
复合材料
作者
Xiaotian Zhu,Guangkuo Li,Xiang Wang,Yuhua LI,Roy Davidson,Brent E. Little,Sai T. Chu
出处
期刊:Optics Express
[The Optical Society]
日期:2023-02-02
卷期号:31 (6): 10525-10525
被引量:12
摘要
Silicon nitride (SiN) integrated optical waveguides have found a wide range of applications due to their low loss, broad wavelength transmission band and high nonlinearity. However, the large mode mismatch between the single-mode fiber and the SiN waveguide creates a challenge of fiber coupling to these waveguides. Here, we propose a coupling approach between fiber and SiN waveguides by utilizing the high-index doped silica glass (HDSG) waveguide as the intermediary to smooth out the mode transition. We achieved fiber-to-SiN waveguide coupling efficiency of lower than 0.8 dB/facet across the full C and L bands with high fabrication and alignment tolerances.
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