Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.11851/6357
Title: Broadband super-collimation with low-symmetric photonic crystal
Authors: Giden, İbrahim Halil
Turduev, Mirbek
Kurt, Hamza
Keywords: Nanophotonic and photonic crystals
Self collimation
Integrated optics
Equifrequency surface
Super collimation
Diffraction
Issue Date: 2013
Publisher: Elsevier Science Bv
Abstract: We investigate dispersive properties of two dimensional photonic crystal (PC) called star-shaped PC (STAR-PC) in order to succeed super-collimation over a broad bandwidth. Both time- and frequency-domain numerical methods are conducted. Due to introduced low-symmetry in the primitive cell, flat contours are observed at the fifth band for transverse magnetic mode. The proposed structure supports a super-collimation effect over a broad wavelength range between 1443 nm and 1701 nm with a bandwidth of Delta omega = 16.42%. The intrinsic characteristic of STAR-PC provides in-plane beam propagation with a limited diffraction length of 120a, where a is the lattice constant. By mean's of STAR-PC, one may realize super-collimation based single-mode optical devices with a low insertion loss, reduced dispersion and wide bandwidth. (C) 2012 Elsevier B.V. All rights reserved.
URI: https://doi.org/10.1016/j.photonics.2012.12.001
https://hdl.handle.net/20.500.11851/6357
ISSN: 1569-4410
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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