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1. (WO2017152256) WAVEGUIDE CROSSING HAVING RIB WAVEGUIDES

Pub. No.:    WO/2017/152256    International Application No.:    PCT/CA2016/050514
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Fri May 06 01:59:59 CEST 2016
IPC: G02B 6/122
G02B 6/35
Applicants: HUAWEI TECHNOLOGIES CANADA CO., LTD.
THE GOVERNING COUNCIL OF THE UNIVERSITY OF TORONTO
Inventors: DUMAIS, Patrick
SACHER, Wesley David
Title: WAVEGUIDE CROSSING HAVING RIB WAVEGUIDES
Abstract:
A photonic platform includes a substrate, a buried oxide layer on the substrate, a first optical layer on the buried oxide layer, the first optical layer including one or more waveguides shaped as rib waveguides protruding upwardly from a common underlying slab and a second optical layer spaced above the first optical layer, the second optical layer defining an upper waveguide that crosses over the one or more partially etched waveguides. A low-loss photonic switch may be made using a silicon photonic platform implementing this waveguide crossing.