摘要
A method to measure the end-output coupling efficiencies between silicon wire waveguides(SWWs)and optical fibers is proposed and demonstrated.The end-output coupling efficiency is calculated through four measured counting rates based on the correlated photon pair generation in the SWW.It provides a way to investigate and optimize the coupling processes at the input and output end of the optical waveguides separately.
基金
Supported by the National Basic Research Program of China under Grant Nos 2011CBA00303 and 2010CB327606
the Tsinghua University Initiative Scientific Research Program
the Basic Research Foundation of Tsinghua National Laboratory for Information Science and Technology
the Postdoctoral Science Foundation of China.
