Title :
Reflective Heterostructure Photonic Crystal Superprism Demultiplexer
Author :
Khorshidahmad, Amin ; Kirk, Andrew G.
Author_Institution :
Dept. of Electr. & Comput. Eng., McGill Univ., Montreal, QC, Canada
Abstract :
A new design for a wideband and compact demultiplexer for coarse wavelength-division-multiplexing applications is proposed. This is based on the superprism effect, using diffraction compensation in a stratified hetero-lattice photonic crystal (PhC) operating in reflective mode. Modeling the variation of the beam envelope within the hetero-lattice, an optimum eight-channel design with 20-nm wavelength spacing is feasible within 42000 μm2 of PhC area. The design results in almost diffraction-limited output beams, and provides a size reduction of 2.6 to 7 times when compared to the PhC area required in the homo-lattice SP design.
Keywords :
compensation; demultiplexing equipment; optical communication equipment; optical design techniques; optical prisms; photonic crystals; wavelength division multiplexing; coarse wavelength-division-multiplexing; demultiplexer; diffraction compensation; diffraction-limited output beams; stratified hetero-lattice photonic crystal; superprism effect; wavelength spacing; Bandwidth; Diffraction; Dispersion; Lattices; Photonic crystals; Reflection; Slabs; Photonic crystal (PhC); superprism (SP); wavelength demultiplexer;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2011.2177817
