High-efficiency antireflection structures for terahertz self-collimating photonic crystals

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We present two types of antireflection structures for two-dimensional photonic crystals of square lattice air holes in silicon, which are embedded in homogeneous background media. One type consists of rows of air holes, and the other consists of air slots that are introduced into the photonic crystal interfaces. The finite-difference time-domain simulations show that the terahertz waves couple efficiently into and out of the self-collimating photonic crystals with the designed antireflection structures applied. The proposed antireflection structures can bring significant improvements in coupling efficiency for compact terahertz devices based on self-collimating photonic crystals. (C) 2009 Optical Society of America
Publisher
OPTICAL SOC AMER
Issue Date
2009-11
Language
English
Article Type
Article
Keywords

WAVE-GUIDES; MAXWELLS EQUATIONS; INTERFACES; SPLITTERS; LIGHT; BEAMS; SLAB

Citation

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, v.26, no.11, pp.1967 - 1974

ISSN
0740-3224
DOI
10.1364/JOSAB.26.001967
URI
http://hdl.handle.net/10203/20338
Appears in Collection
PH-Journal Papers(저널논문)
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