Tunable phase compensator based on one-dimensional photonic crystals with single-negative materials
Department of Physics, Zhenjiang Watercraft College, Zhenjiang, 212003, P.R. China
2 College of Optoelectronic Engineering, Center of Optofluidic Technology, Nanjing University of Posts and Telecommunications, Nanjing, 210003, P.R. China
Corresponding author: a firstname.lastname@example.org
Published online: 4 February 2011
The reflection phase difference between TE and TM waves in one-dimensional photonic crystals composed of single-negative (SNG) (permittivity- or permeability-negative) materials is investigated by transfer matrix method. Within two omni-directional gaps the reflection phase difference changes smoothly and increases with the increasing of the incident angle. In the center of the second omni-directional gap the reflection phase difference remains almost unchanged in a broad frequency band. Especially, at both the edges of the second omni-directional gap the reflection phase difference keeps zero in spite of the change of incident angle. Based on these properties, a continuously tunable phase compensators and an omni-directionally synchronous reflector for TE and TM waves can be designed. The working frequencies for the phase compensators and synchronous reflector are tunable.
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2011