Analysis of multigroup and multichannel filtering properties in a ferroelectric-dielectric periodic multilayer

作者：King Tzu Chyang; Li Ya Wen; Li Yu Huai; Wu Chien Jang^*

来源：Applied Optics, 2016, 55(24): 6630-6633.

DOI：10.1364/AO.55.006630

In this work, we propose a filter structure using a one-dimensional ferroelectric-dielectric periodic multilayer, air/left perpendicular (ABA)(N,) C right perpendicular (Np) (ABA) (Ns)/air, where N-s and N-p 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 (epsilon = 439 at 10 GHz). The results show that the transmittance spectra have N-s-channel groups at microwave frequencies and these groups can be classified into two types. The first type has only one channel group with N-p narrower channels. The other has N-s - 1 groups, each of which has N-p + 1 broader channels. In this filter structure the group number and channel number of each group can be determined simply by changing N-s and N-p.

• 出版日期2016-8-20