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Title: Dual-frequency division de-multiplexer based on cascaded photonic crystal waveguides
Authors: Akosman, Ahmet Emin
Mutlu, Mehmet
Kurt, Hamza
Özbay, Ekmel
Keywords: Photonic crystal
Slow light
Optical communication
Issue Date: 2012
Publisher: Elsevier
Source: Conference on Wave Propagation - From Electrons to Photonic Crystals and Metamaterials (WavePro) in Honor of Costas M. Soukoulis' 60th Birthday -- JUN 08-11, 2011 -- Rethymno, GREECE
Abstract: A dual-frequency division de-multiplexing mechanism is demonstrated using cascaded photonic crystal waveguides with unequal waveguide widths. The de-multiplexing mechanism is based on the frequency shift of the waveguide bands for the unequal widths of the photonic crystal waveguides. The modulation in the waveguide bands is used for providing frequency selectivity to the system. The slow light regime of the waveguide bands is utilized for extracting the desired frequency bands from a wider photonic crystal waveguide that has a relatively larger group velocity than the main waveguide for the de-multiplexed frequencies. In other words, the wider spatial distribution of the electric fields in the transverse direction of the waveguide for slow light modes is utilized in order to achieve the dropping of the modes to the output channels. The spectral and spatial de-multiplexing features are numerically verified. It can be stated that the presented mechanism can be used to de-multiplex more than two frequency intervals by cascading new photonic crystal waveguides with properly selected widths. (c) 2012 Elsevier B.V. All rights reserved.
ISSN: 0921-4526
Appears in Collections:Elektrik ve Elektronik Mühendisliği Bölümü / Department of Electrical & Electronics Engineering
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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