Fused vertical coupler for switches, filters and other electro-optic devices

摘要

A vertical directional coupler fabricated using wafer fusion with a very short coupling length for fabrication of switches, filters and other electro-optic devices. Using the fused vertical coupler, planar waveguides can be fabricated on two different substrates in a three-dimensional structure in which there is vertical coupling between arrays through fused regions. Switches, including crossbar switches based on coupling between independent arrays of waveguides, as well as filters, can be fabricated.