Optical coupler

Details Optical coupler Optical coupler

1996-11-04

1998-05-26

Ngo, John

Optical waveguides

With optical coupler

Particular coupling structure

385 14, 385 43, 385 50, 385132, G02B 626

Patent

active

057579954

ABSTRACT:
A transition waveguide is provided between one main waveguide and two branching waveguides. The transition waveguide includes a stepped portion, of which the waveguide width suddenly slightly spreads stepwise with respect to the distal end portion of the main waveguide, and an extension portion extending from the stepped portion toward the branching waveguides. The waveguide width of the extension portion is substantially fixed or gradually increased in a region ranging from the stepped portion to the branching waveguides.

REFERENCES:
patent: 4737002 (1988-04-01), Boucouvalas
patent: 4846540 (1989-07-01), Kapon
patent: 5058978 (1991-10-01), Kondoh et al.
patent: 5138687 (1992-08-01), Horie et al.
patent: 5185828 (1993-02-01), van der Tol
patent: 5546483 (1996-08-01), Inoue et al.

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