authors Xu, Dan-Xia Janz, Siegfried Williams, Robin L Allegretto, Elizabeth Mailhot, Sylvain He, Jian Jun Baribeau, Jean-Marc Lafontaine, Hugues Stapledon, John Fraser, Jeffrey W Robillard, Mike R Jessop, Paul Edward Kovacic, Stephen
keywords Optics Physical Sciences Science & Technology Si SiGe WDM heterostructure mode profile optical facets refractive index waveguide