Bauters Jared F, Davenport Michael L, Heck Martijn J R, Doylend J K, Chen Arnold, Fang Alexander W, Bowers John E
Department of Electrical and Computer Engineering, University of California, Santa Barbara, CA 93106, USA.
Opt Express. 2013 Jan 14;21(1):544-55. doi: 10.1364/OE.21.000544.
We demonstrate a novel integrated silicon and ultra-low-loss Si3N4 waveguide platform. Coupling between layers is achieved with (0.4 ± 0.2) dB of loss per transition and a 20 nm 3-dB bandwidth for one tapered coupler design and with (0.8 ± 0.2) dB of loss per transition and a 100 nm 3-dB bandwidth for another. The minimum propagation loss measured in the ultra-low-loss waveguides is 1.2 dB/m in the 1590 nm wavelength regime.
