Abstract
This paper investigates the optical characteristics of a light-focusing device (LFD) consisting of two-dimensional (2-D) photonic crystals (PCs) configured in a parallelogram lattice structure. The LFD is composed of two jointed symmetric PCs that have a strong self-collimation effect. This self-collimation effect focuses the incident light wave. For a square lattice, however, in which the equi-frequency contours have fourfold symmetry (/spl pi//2 rotation symmetry), the band structure needed to realize an LFD was not obtained. The proposed solution was to consider the parallelogram lattice arrangement since its equi-frequency contours do not have /spl pi//2 rotation symmetry; a prototype LFD composed of 2-D PCs with parallelogram lattice structure exhibits desirable focusing performance. The authors also investigate the asymmetry of light wave transmission through the LFD. Finite-division time-domain (FDTD) simulations of the optical property of the LFD show that the LFD has distinct transmission asymmetry.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
