Designing Devices Using One-Dimensional Ternary Photonic Bandgap Material Structures

1D ternary photonic bandgap (PBG) material structures based on Si/Bi₄Ge₃O₁₂/SiO₂ are discussed in detail, which are subjected to a change in number of periods, refractive indices of constituent materials, angles of incidence of light on the structure, and thicknesses of constituent material layers. The output spectra of these 1D ternary photonic bandgap structures are computed under these conditions to observe the effects of these changes. Different ways are suggested and discussed, with regard to the obtained observations, to design photonic devices such as optical filters, reflectors, sensors, buffers, and multiplexers. The idea of cascading several 1D photonic bandgap structures to design filters and reflectors is also discussed in this chapter.