Highly efficient multi-channel drop filter in a two-dimensional hetero photonic crystal.
An in-plane, multi-channel drop filter with high efficiency, in a two-dimensional photonic crystal (PC) slab, is experimentally demonstrated. Based on the concept of heterostructure photonic crystals proposed previously, the device consists of multiple simply connected, PC-based filter units, in which each unit has a structure proportional to an optimized basic unit and operates at a different wavelength. Four-channel drop operation was successfully obtained, with high efficiencies of almost 100%, and equal quality factors, across all channels.
Takano
Hitomichi
H
Song
Bong-Shik
BS
Asano
Takashi
T
Noda
Susumu
S