Large bandwidth mode order converter by differential waveguides
Künye
Öner, B. B., Üstün, K., Kurt, H., Okyay, A. K., Turhan Sayan, G. (2015). Large bandwidth mode order converter by differential waveguides. Optics Express, 23(3), 3186-3195.Özet
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. © 2015 Optical Society of America.