Channel drop filter in two-dimensional triangular lattice photonic crystals.
Based on two-dimensional photonic crystals with a triangular lattice, a channel drop filter with a wavelength-selective reflection microcavity is designed. In the structure, two microcavities are used. One is used for a resonant tunneling-based channel drop operation. The other is used to realize wavelength-selective reflection feedback in the bus waveguide. The phase term, which is derived by means of coupled-mode theory to achieve close to 100% drop efficiency, is satisfied by modifying the sizes of the border air holes next to the bus waveguide section between the two cavities. Using the finite-difference time-domain method, the simulation results show complete power transfer between the bus and drop waveguides via the system.
Ren
Hongliang
H
State Key Laboratory of Advanced Optical Communication Systems & Networks, Shanghai Jiao Tong University, Shanghai 200240, China.
Jiang
Chun
C
Hu
Weisheng
W
Gao
Mingyi
M
Qu
Yang
Y
Wang
Fanghua
F