Qinetiq Limited

Corin B E Gawith

David Colin Hanna

Peter G R Smith

Graeme W Ross

David P Shepherd

An optical waveguide with at least a guiding lamina ( ) of optical material bonded by direct interfacial bonding to a superstructure lamina ( ) of optical material, in which regions of the guiding lamina have modified optical properties so as to define a light guiding path along the guiding lamina. In a particular example, a periodically poled LiNbO planar waveguide is buried in LiTaO by direct interfacial bonding and precision polishing techniques and used in an optical frequency doubling system.

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Romford, United Kingdom

Corin B E Gawith