Connection between an integrated optical waveguide and an optica

Details Connection between an integrated optical waveguide and an optica Connection between an integrated optical waveguide and an optica

1996-05-06

1998-07-28

Lee, John D.

Optical waveguides

With optical coupler

Particular coupling structure

385 50, 385 52, G02B 630

Patent

active

057872147

ABSTRACT:
A connection between an integrated optical waveguide and an optical fibre has a layer of silicon in which a rib waveguide is formed separated from a substrate by a layer of silicon dioxide. A V-groove is formed in the substrate for receiving an optical fibre, and the V-groove is arranged to align the optical fibre at a predetermined angle with respect to the waveguide. The rib waveguide and the underlying layer of silicon dioxide are formed to overhang the end of the V-groove so that the end of the waveguide is in close proximity with the end of an optical fibre positioned in the V-groove. A method of forming a connection, in which the V-groove is etched using a material which etches the substrate material as opposed to the layer of silicon dioxide, is also disclosed. Finally, a method of connecting an integrated optical waveguide to an optical fibre using a connection as described above is disclosed.

REFERENCES:
patent: 4966433 (1990-10-01), Blonder
patent: 4973133 (1990-11-01), Matz et al.
patent: 5046809 (1991-09-01), Stein
patent: 5239601 (1993-08-01), Denis et al.
patent: 5357593 (1994-10-01), Bossler
patent: 5535295 (1996-07-01), Matsumoto
patent: 5579424 (1996-11-01), Schneider

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