Abstract

In this work, we propose a filter structure using a one-dimensional ferroelectric-dielectric periodic multilayer, air/[(ABA)NsC]Np(ABA)Ns/air, where Ns and Np are the two numbers of periods. Here, B is a dielectric material of SiO2, C is the same as B with a different thickness, and A is taken to be a ferroelectric material Ba55Sr45TiO3+30%Mg2SiO4, whose dielectric constant is very high (ϵ=439 at 10 GHz). The results show that the transmittance spectra have Ns-channel groups at microwave frequencies and these groups can be classified into two types. The first type has only one channel group with Np narrower channels. The other has Ns1 groups, each of which has Np+1 broader channels. In this filter structure the group number and channel number of each group can be determined simply by changing Ns and Np.

© 2016 Optical Society of America

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