ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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The disorder effect on the performance of novel waveguides constructed in two-dimensional amorphous photonic materials |
Chen Xiao(陈笑)† and Wang Yi-Quan(王义全) |
College of Science, Minzu University of China, Beijing 100081, China |
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Abstract On the basis of two-dimensional amorphous photonic materials, we have designed a novel waveguide by inserting thinner cylindrical inclusions in the centre of basic hexagonal units of the amorphous structure along a given path. This waveguide in amorphous structure is similar to the coupled resonator optical waveguides in periodic photonic crystals. The transmission of this waveguide for S-polarized waves is investigated by a multiple-scattering method. Compared with the conventional waveguide by removing a line of cells from amorphous photonic materials, the guiding properties of this waveguide, including the transmissivity and bandwidth, are improved significantly. Then we study the effect of various types of positional disorder on the functionality of this device. Our results show that the waveguide performance is quite sensitive to the disorder located on the boundary layer of the waveguide, but robust against the disorder in the other area in amorphous structure except the waveguide border. This disorder effect in amorphous photonic materials is similar to the case in periodic photonic crystals.
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Received: 21 December 2010
Revised: 20 January 2011
Accepted manuscript online:
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PACS:
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42.70.Qs
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(Photonic bandgap materials)
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42.82.Et
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(Waveguides, couplers, and arrays)
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Cite this article:
Chen Xiao(陈笑) and Wang Yi-Quan(王义全) The disorder effect on the performance of novel waveguides constructed in two-dimensional amorphous photonic materials 2011 Chin. Phys. B 20 074211
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