Ogusu Kazuhiko, Takayama Kosuke
Graduate School of Science and Technology, Shizuoka University, Hamamatsu, 432-8011 Japan.
Opt Lett. 2007 Aug 1;32(15):2185-7. doi: 10.1364/ol.32.002185.
We study the transmission characteristics of a photonic crystal waveguide with a single stub of a finite length and propose a double-stub waveguide structure for its application to optical filters. The proposed device operates as a Fabry-Perot interferometer and can be used as a broad bandstop filter and a narrow bandpass filter. These filters are inherently compact and their center frequency is given by the resonant frequency of the stub.
