Patent ID: 7215854
Filing Date: 2007-05-08
Classification: G02B

Abstract:
1. A method of making a waveguide network for propagating light signals, the method comprising: depositing a first cladding layer on a substrate; depositing a first core layer on the first cladding layer, the first core layer having a higher index than the first cladding layer; etching the first core layer to form a first waveguide core and a second waveguide core; depositing and planarizing a second cladding layer; depositing a second core layer on the second cladding layer; etching the second core layer to form a bridge waveguide core, wherein the bridge waveguide core is etched to be directionally coupled to the first waveguide core and to cross over the second waveguide core such that the bridge waveguide core is not substantially coupled to the second waveguide core; and depositing a third cladding layer.