Title :
Ultrashort 2-D photonic crystal directional couplers
Author :
Martinez, A. ; Cuesta, F. ; Marti, J.
Author_Institution :
Fiber-Radio Group, Univ. Politecnica de Valencia, Spain
fDate :
5/1/2003 12:00:00 AM
Abstract :
A novel approach to reduce the coupling length and to increase the coupling coefficient in waveguide directional couplers implemented on two-dimensional (2-D) photonic crystals (PhC) is proposed. To increase the coupling coefficient of a 2-D PhC directional coupler, which is composed of two parallel PhC waveguides separated by one or several rows of rods, the radius of the rods between both waveguides is reduced. The application of this feature to ultrasmall channel interleavers and wavelength demultiplexers is addressed.
Keywords :
channel spacing; demultiplexing equipment; optical communication equipment; optical directional couplers; optical dispersion; photonic crystals; WDM devices; coupling coefficient; coupling length; dispersion relation; microscale optical integrated circuits; parallel photonic crystal waveguides; rod radius; two-dimensional photonic crystals; ultrashort 2-D photonic crystal directional couplers; ultrasmall channel interleavers; waveguide directional couplers; wavelength demultiplexers; Channel spacing; Directional couplers; Frequency; Integrated circuit technology; Integrated optics; Optical waveguides; Photonic crystals; Photonic integrated circuits; Structural rods; Two dimensional displays;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2003.810258
