Electric Field Transmittance in a 1D Alternating Photonic Crystal
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This Demonstration calculates the electric field transmission from a 1D photonic crystal that consists of alternating layers having refractive indices of 
and 
You can see the band gap phenomena. The dependence of the band gap width and transmission on the difference in and is evident.
Contributed by: Hendradi Hardhienata (April 2011)
Idea Suggested by: Husin Alatas
Department of Physics, Bogor Agricultural University
Open content licensed under CC BY-NC-SA
Snapshots
Details
Formulas and constants used:
speed of light: 
width of the high refractive index layer: 
width of the low refractive index layer: 
period of the high and low layers: 
incoming wavelength/frequency: 
; 
effective index: 
Bragg frequency: 
;
Wavenumbers:
Reference
[1] A. Yariv and P. Yeh, Optical Waves in Crystals: Propagation and Control of Laser Radiation, New York: Wiley, 1984.
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