title: Compact three-port optical two-dimensional photonic crystal-based circulator of W-format.
abstract: A three-port optical circulator of W-format based on 2D photonic crystal is presented. This circulator is more compact as compared to the known one of the traditional Y-format. The W-circulator does not have rotational symmetry. As a consequence, the frequency responses for different port excitation are slightly different, as it is shown by symmetry analysis and by numerical simulations.
authors.affiliation: Department of Electrical Engineering, Av. Augusto Correa 01, Belem, Para, Brazil.
authors.forename: Victor
authors.initials: V
authors.lastname: Dmitriev
authors.forename: Marcelo N
authors.initials: MN
authors.lastname: Kawakatsu
authors.forename: Francisco J M
authors.initials: FJ
authors.lastname: de Souza