Patent ID: 7008551

Claim:
A method for producing an optical waveguide device, comprising: providing a wafer comprising a wafer material positioned on a conveyer, said wafer providing a lower cladding material; providing a linear injector positioned to transport a layer formation material onto an exposure area, such that when said wafer is conveyed through said exposure area said layer formation material can form a layer on said wafer; forming a core layer on said lower cladding material by conveying said wafer on said conveyer through said exposure area while said linear injector transports a core layer formation material and a dopant source for the core layer formation material onto said exposure area at approximately atmospheric pressure; forming a core by etching said core layer; and forming an upper cladding layer on said core region by conveying said wafer on said conveyer through said exposure area while said linear injector transports an upper cladding layer formation material onto said exposure area at approximately atmospheric pressure, such that said upper cladding layer substantially covers said core.