Voltage-tunable pass band in cylindrical multilayered structure containing PMMA and 0.67PMN–0.33PT single crystal as a defect layer

Abstract

In present paper, an inline optical demultiplexer through cylindrical multilayered structure having a cavity of Poly-methyl methacrylate surrounded with single crystal 0.67PMN–0.33PT is presented. The required transmission of the proposed structure is obtained by transfer matrix method using cylindrical coordinate system. It is observed that the multilayer cylindrical structure is able to provide the photonic band gap, where groups of wavelengths are stopped from propagation through the waveguide. The insertion of cavity in considered structure also provides a pass band in the photonic band gap region. The 0.67PMN–0.33PT crystal in the present structure is used to control the thickness of cavity by applying an external DC voltage. Hence, the obtained shift of pass band is approximately 6 nm/V in the proposed structure. © 2016, Springer Science+Business Media New York.