Akosman, A.E.Mutlu, M.Kurt H.Özbay, Ekmel2016-02-082016-02-08201110944087http://hdl.handle.net/11693/21713We demonstrate the operation of a compact wavelength demultiplexer using cascaded single-mode photonic crystal waveguides utilizing the slow light regime. By altering the dielectric filling factors of each waveguide segment, we numerically and experimentally show that different frequencies are separated at different locations along the waveguide. In other words, the beams of different wavelengths are spatially dropped along the transverse to the propagation direction. We numerically verified the spatial shifts of certain wavelengths by using the two-dimensional finite-difference time-domain method. The presented design can be extended to de-multiplex more wavelengths by concatenating additional photonic crystal waveguides with different filling factors. © 2011 Optical Society of America.EnglishFinite difference time domain methodLaser opticsMultiplexingOptical waveguidesSlow lightTime domain analysisWaveguidesDielectric fillingDifferent frequencyFilling factorLight regimePhotonic crystal waveguidePropagation directionSingle-mode photonic crystalWaveguide segmentsWavelength demultiplexersPhotonic crystalsarticlecomputer aided designcomputer simulationcrystallizationequipmentequipment designinstrumentationphotonrefractometrysurface plasmon resonancetheoretical modelComputer SimulationComputer-Aided DesignCrystallizationEquipment DesignEquipment Failure AnalysisModels, TheoreticalPhotonsRefractometrySurface Plasmon ResonanceArticle10.1364/OE.19.024129