Stability of the photonic band gap in the presence of disorder.
Kaliteevski, M. A. and Beggs, D. M. and Brand, S. and Abram, R. A. and Nikolaev, V. V. (2006) 'Stability of the photonic band gap in the presence of disorder.', Physical review B., 73 (3). 033106.
The photonic eigenmodes near a band gap of a type of one-dimensional disordered photonic crystal have been investigated statistically. For the system considered, it is found that the tail of the density of states entering the band gap is characterized by a certain penetration depth, which is proportional to the disorder parameter. A quantitative relation between the relative penetration depth, the relative width of the photonic band gap, and the disorder has been found. It is apparent that there is a certain level of disorder below which the probability of the appearance of photonic eigenstates at the center of the photonic band gap essentially vanishes. Below the threshold, the ensemble-averaged transmission at the center of the photonic band gap does not change significantly with increasing disorder, but above threshold it increases much more rapidly. A simple empirical formula has been obtained which describes how the logarithm of the transmission relates to the periodic refractive index modulation and the disorder
|Keywords:||Localization, Systems, Crystals, Average, Light.|
|Full text:||PDF - Published Version (94Kb)|
|Publisher Web site:||http://dx.doi.org/10.1103/PhysRevB.73.033106|
|Publisher statement:||© 2006 by The American Physical Society. All rights reserved.|
|Record Created:||28 Nov 2006|
|Last Modified:||20 Sep 2010 15:56|
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