supported by the National Natural Science Foundation of China(No.61204080);the Natural Science Foundation of Shaanxi Province(No.2012JM1011);the Shaanxi Provincial Education Department(No.2013JK1111);the Doctoral Program Foundation of Xi’an Polytechnic University of China(No.BS1128);the Shaanxi Province Ordinary University Key Disciplines Construction Projects of Special Funds(No.(2008)169)
Based on a submicrometer-sized SiGe-SOI waveguide, the coupling loss mechanism is analyzed between the submicrometer-sized SiGe-SOI waveguide and the fiber. The main sources of coupling loss are analyzed, and the mism...