Webb Ziesenheim Bruening Logsdon Orkin & Hanson, P.C.
Connection between an integrated optical waveguide and an optical fibre
 A connection between an integrated optical waveguide and an optical fibre has a layer of silicon in which a rib waveguide is formed separated from a substrate by a layer of silicon dioxide. A V-groove is formed in the substrate for receiving an optical fibre, and the V-groove is arranged to align the optical fibre at a predetermined angle with respect to the waveguide. The rib waveguide and the underlying layer of silicon dioxide are formed to overhang the end of the V-groove so that the end of the waveguide is in close proximity with the end of an optical fibre positioned in the V-groove. A method of forming a connection, in which the V-groove is etched using a material which etches the substrate material as opposed to the layer of silicon dioxide, is also disclosed. Finally, a method of connecting an integrated optical waveguide to an optical fibre using a connection as described above is disclosed. 
Bookham Technology Ltd.
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G02B G02B
inventional inventional
Andrew George Arnold Peter Roscoe John Paul Robin Jeremy Richard
Rickman Harpin Drake Morris