In this paper the latest progress of optical couplers is reviewed.The emphasis is placed on the fabrication,structures of the most efficient(55%) dual grating-assisted directional coupler and the possibility of further improving the coupling efficiency.
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刘艳;余金中. SOI基光耦合器研究进展[J].激光与红外,2007,37(1):18~21 LIU Yan; YU Jin-zhong. The Progress of Silicon-on-insulator Couplers[J]. LASER & INFRARED,2007,37(1):18~21