Demonstration of a 3-dB directional coupler with enhanced robustness to gap variations for silicon wire waveguides.
Open Access
- 23 January 2014
- journal article
- Published by Optica Publishing Group in Optics Express
- Vol. 22 (2), 2051-2059
- https://doi.org/10.1364/oe.22.002051
Abstract
We demonstrate a robust 3-dB directional coupler which has a narrow silicon wire core and a wide gap. Sensitivity to the gap variation is decreased to one tenth that of a conventional directional coupler. Better spectral stability due to the enhanced robustness to waveguide geometrical fluctuations was experimentally verified.Keywords
This publication has 5 references indexed in Scilit:
- Compact and low power operation optical switch using silicon-germanium/silicon hetero-structure waveguideOptics Express, 2012
- Low-crosstalk 2 × 2 thermo-optic switch with silicon wire waveguidesOptics Express, 2010
- Low-power, 2×2 silicon electro-optic switch with 110-nm bandwidth for broadband reconfigurable optical networksOptics Express, 2009
- Design of a digital, ultra-broadband electro-optic switch for reconfigurable optical networks-on-chipOptics Express, 2009
- Fabrication of low-loss photonic wires in silicon-on-insulator using hydrogen silsesquioxane electron-beam resistElectronics Letters, 2008