Large range of omni-directional reflection in 1D photonic crystal heterostructures

A simple design of one-dimensional omni-directional reflector based on photonic crystal heterostructures structure has been proposed. The proposed structure consists of a periodic array of alternate layers of SiO 2 and Te as the materials of low and high refractive indices, respectively. The structu...

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Bibliographic Details
Published inOptik (Stuttgart) Vol. 122; no. 24; pp. 2186 - 2190
Main Authors Kumar, Vipin, Anis, Mohd, Singh, Kh. S., Singh, Gulbir
Format Journal Article
LanguageEnglish
Published Elsevier GmbH 01.12.2011
Subjects
Banded structure
Bands
Heterostructures
Lattices
Mathematical models
Omni-directional reflection
Photonic crystal
Photonic crystal heterostructures
Photonic crystals
Reflection
Stacks
Omni-directional reflection
Photonic crystal
Photonic crystal heterostructures
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Summary:A simple design of one-dimensional omni-directional reflector based on photonic crystal heterostructures structure has been proposed. The proposed structure consists of a periodic array of alternate layers of SiO 2 and Te as the materials of low and high refractive indices, respectively. The structure considered here has three stacks of periodic structures having five layers each. The lattice period of successive stack is increased by a certain multiple (say gradual constant, δ) of the lattice period of the just preceding stack. For numerical computation, the method of transfer matrix method (TMM) has been employed. It is found that such a structure has wider reflection bands in comparison to a conventional dielectric PC structure and the width of the omni-directional reflection (ODR) bands can be enlarged by increasing the value of the gradual constant δ.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0030-4026
1618-1336
DOI:10.1016/j.ijleo.2011.01.012