High-efficiency surface-emitting channel drop filters in two-dimensional photonic crystal slabs

Min, Bok-Ki; Kim, Jae-Eun; Park, Hae Yong
January 2005
Applied Physics Letters;1/3/2005, Vol. 86 Issue 1, p011106
Academic Journal
We analyze theoretically the output efficiencies of surface-emitting channel drop filters using channel drop tunneling processes in two-dimensional photonic crystal slabs. By using the channel drop tunneling processes, the output efficiencies of the filters can be easily improved to the values much higher than 50%, the maximum output efficiency of surface-emitting channel drop filters using one single-mode cavity, and the output efficiency of 100% is possible theoretically. In order to demonstrate the theoretical results, we present a surface emitting channel drop filter using the channel drop tunneling processes in a two-dimensional photonic crystal slab. The output efficiency of the presented filter is about 94% in good agreement with the theoretical analysis.


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