Multiple split optical waveguide

Details Multiple split optical waveguide Multiple split optical waveguide

2006-10-03

2006-10-03

Pak, Sung (Department: 2874)

Optical waveguides

With optical coupler

Particular coupling structure

C385S039000

Reexamination Certificate

active

07116867

ABSTRACT:
Disclosed is a multiple split optical waveguide in which a branch waveguide path at an output end of a branch part of a first stage defines an acute angle with respect to an input waveguide path, and a branch waveguide path at an input end of a branch part of an n-th stage is no more inclined toward a central axial line defined by an extension line of the input waveguide path than a branch waveguide path at an input end of a branch part of an (n+1)-th stage, n being an integer equal to or greater than two. Thus, the waveguide paths are prevented from spreading beyond the first branch angle, and it becomes easier to bring the outer waveguide guide paths back toward the center. This prevents an increase in the variations in length between the outer and inner waveguide paths.

REFERENCES:
patent: 4760580 (1988-07-01), Thompson et al.
patent: 6282343 (2001-08-01), Kim et al.
patent: 0 513 556 (1992-11-01), None
patent: 0 668 515 (1995-08-01), None
patent: 60032030 (1985-02-01), None
patent: 4-289803 (1992-10-01), None
patent: 3030108 (2000-02-01), None
English Translation of JP60-32030.
English Language Abstract, Japanese Patent Publication 4-289803, Published Oct. 14, 1992, and Japanese Patent No. 3030108, Granted Feb. 4, 2000.

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