Optical waveguide device

Details Optical waveguide device Optical waveguide device

1994-12-07

1997-10-21

Bovernick, Rodney B.

Optical waveguides

Planar optical waveguide

385 2, 385 8, G02B 610

Patent

active

056804970

ABSTRACT:
This invention aims at providing an optical waveguide device capable of stably operating for an extended period of time. The optical waveguide device comprises an optical waveguide path formed inside a surface of an electro-optical substrate, a buffer layer formed on the optical waveguide path, and a driving electrode for impressing an electric field so as to change a refractive index of the optical waveguide path, wherein the buffer layer is made of a transparent dielectric or insulator of a mixture between silicon dioxide and an oxide of at least one element selected from the group consisting of the metal elements of the Groups III to VIII, Ib and IIb of the Periodic Table and semiconductor elements other than silicon, or a transparent dielectric or insulator of an oxide between silicon and at least one of the metal elements and semiconductor elements described above.

REFERENCES:
patent: 5153934 (1992-10-01), Okayama et al.
patent: 5214724 (1993-05-01), Seino et al.

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