Effect of impurity absorption on the 1D photonic crystal filters
LIU Qi-neng
Author information+
Calculator Science College of Chongqing Technology and Business University, Chongqing 400067, China
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History+
Received
Revised
Published
2008-03-26
2008-05-12
2009-01-25
Issue Date
2009-01-25
Abstract
For studying the influence of impurity absorption on the 1D photonic crystal filter, the complex wave number is adopted, the transfer matrix of the impurity-doped 1D photonic crystal is inferred ,and variety feature of attenuation coefficient with the transmission coefficient in the impurity-doped 1D photonic crystal is calculated. Worth biggest of the defect mode lowers quickly with the attenuation coefficient increment, FWHM of the defect mode increases with the attenuation coefficient increment. The worth biggest and FWHM of defect mode lowers with the impurity thickness increment. Have to consider the absorption of the impurity quality while design filter, the attenuation coefficient should less than 0.0005k and the impurity thickness should less than a wavelength.
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