Patent ID: 7020374

Claim:
An optical waveguide structure comprising: a monocrystalline substrate; an amorphous oxide material in contact with the monocrystalline substrate; a monocrystalline metal oxide layer selected from the group consisting of alkaline earth metal titanates, alkaline earth metal zirconates, alkaline earth metal hafnates, alkaline earth metal tantalates, alkaline earth metal ruthenates, alkaline earth metal niobates, alkaline earth metal vanadates, alkaline earth metal tin-based perovskites, lanthanum aluminate, lanthanum scandium oxide, gadolinium oxide and mixtures thereof contacting the amorphous oxide material; and an optical waveguide layer overlying said metal oxide layer, said structure further comprising a cladding layer overlying said metal oxide layer, said optical waveguide layer disposed at least partially within said cladding layer.