Ultracompact resonant filters in photonic crystals.
A novel design for an ultracompact, high-Q notch-rejection filter is presented, and an analytic expression for the transmission properties is derived. This folded directional coupler shares the properties of a Fabry-Perot resonator and a directional coupler. We compare and contrast the device to high-Q Fabry-Perot cavities in photonic crystal waveguides.
White
T P
TP
Centre for Ultrahigh-Bandwidth Devices for Optical Systems, School of Physics, University of Sydney, Sydney, NSW 2006, Australia. twhite@physics.usyd.edu.au
Botten
L C
LC
McPhedran
R C
RC
de Sterke
C Martijn
CM