title: Large bandwidth mode order converter by differential waveguides.
abstract: In this article, we propose a large bandwidth mode-order converter design by dielectric waveguides with equal lengths but different cross-sectional areas. The efficient conversion between even and odd modes is verified by inducing required phase difference between the equal length waveguides of different widths. Y-junctions are composed of both tapered mode splitter and combiner to connect mono-mode waveguide to multi-mode waveguide. The converted mode profiles at the output port show that the device operates successfully at designed wavelengths with wide bandwidth. This study provides a novel technique to implement compact mode order converters and direction selective/sensitive photonic structures.
authors.forename: B B
authors.initials: BB
authors.lastname: Oner
authors.forename: K
authors.initials: K
authors.lastname: Üstün
authors.forename: H
authors.initials: H
authors.lastname: Kurt
authors.forename: A K
authors.initials: AK
authors.lastname: Okyay
authors.forename: G
authors.initials: G
authors.lastname: Turhan-Sayan