Composite optical waveguide structures or mode transformers and their methods of
fabrication and integration are disclosed, wherein the structures or mode transformers are …

Composite optical waveguide structures or mode transformers and their methods of
fabrication and integration are disclosed, wherein the structures or mode transformers are …

According to the invention, a method of optical radiation mode transformation comprises
introducing multimode opti cal radiation into a waveguide Structure providing adiabatic …

The present invention includes a device and a method for fabricating a device that is an
optical power mode transformer that accepts light in a mode transformation direction where …

The mode transforming structure includes a first waveguide structure. A slot waveguide
region is coupled to the first waveguide structure. The slot waveguide region includes one or …

A tapered waveguide optical mode transformer (20) includes a tapered core formed on a
planar substrate structure (16). To vertically taper the core (21), steps (22) are etched into …

Formation of a substantially flat upper cladding surface over a waveguide core facilitates
transverse-coupling between assembled waveguides, and/or provides mechanical …

A spot-size converter for coupling light between first and second waveguides respectively
supporting first and second propagation modes having substantially different dimensions is …

An integrated optical mode transformer provides a low loss interconnection between an
optical fiber and an integrated optic waveguide having a spot size different from that of the …

This application claims the benefit of US Provisional Application No. 60/339,131, filed Dec.
11, 2001, entitled “Photonic Chip Mounting in a Recess for Waveguide Align ment and …