Low-loss channel waveguides and Y-splitter formed by ion-exchange in silica-on-silicon He, Zian ; Li, Yigang ; Li, Yingfeng ; Zhang, Yanwu ; Liu, Liying ; Xu, Lei Abstract Publication: Optics Express Pub Date: 2008 DOI: 10.1364/OE.16.003172 Bibcode: 2008OExpr..16.3172H