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Abstract
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A one dimensional plasma photonic crystal (1DPPC) structure was proposed to design a tunable
compressing/broadening multi-channel optical filter with external controllability. The 1DPPC with
arrangement of (AP)nD(PA)n, where A and D are the dielectric materials, P is a magnetized plasma
layer and n is the number of the periodicity, was proposed. The well-known transfer matrix method
was employed for analysis. In linear transmittance spectrum, n1 defect modes were appeared
inside the photonic band gap. The results were shown that by increasing the applied magnetic field
intensity and its direction, a red-shift and blue-shift were, respectively, observed in defect mode frequencies.
On the other hand, the modes were compressed and broadened with increasing the intensity
and the direction of the applied magnetic field, respectively. Externally controllable defect
modes can be useful in designing a multichannel tunable optical filter
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