Beam splitter and beam bends based on self-collimation effect in two-dimensional photonic crystals

Basing on the self-collimation effect of photonic crystals, one-to-two beam splitter, beam bend and one-to-three beam splitter are, respectively, designed by introducing a different line defect along the same direction. From the equal-frequency contour plot which is calculated by the plane wave expa...

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Bibliographic Details
Published inJournal of modern optics Vol. 56; no. 10; pp. 1159 - 1162
Main Authors Wang, Mei, Yun, Maojin, Kong, Weijin, Cui, Chunling
Format Journal Article
LanguageEnglish
Published Abingdon Taylor & Francis Group 10.06.2009
Taylor & Francis
Taylor & Francis Ltd
Subjects
Atoms & subatomic particles
beam splitter
Crystals
Exact sciences and technology
Frequencies
Fundamental areas of phenomenology (including applications)
Integrated circuits
integrated optical device
Optical elements, devices, and systems
Optical materials
Optics
Photonic bandgap materials
photonic crystals
Physics
Reflectors, beam splitters, and deflectors
Simulation
Wave optics
Wave propagation, transmission and absorption
Perfectly matched layer
Electromagnetic wave propagation
Two dimensional structure
Photonic crystals
Theoretical study
Finite difference time-domain analysis
Plane waves
Self collimation
Boundary conditions
Beam separators
Optical circuit
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Summary:Basing on the self-collimation effect of photonic crystals, one-to-two beam splitter, beam bend and one-to-three beam splitter are, respectively, designed by introducing a different line defect along the same direction. From the equal-frequency contour plot which is calculated by the plane wave expansion method, we obtain the frequency and the propagate direction of the self-collimated beam. The self-collimated beam propagation in photonic crystals with different line defects is simulated by the two-dimensional finite-difference time-domain method with perfectly matched layer absorbing boundary conditions. The simulation results show that one-to-two beam splitter, beam bend and one-to-three beam splitter can be realized by appropriately arranging the line defect along the proper direction. Such devices can greatly enhance photonic crystals for use in high-density optical integrated circuits.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0950-0340
1362-3044
DOI:10.1080/09500340902957378