Optical device with an optical coupler for effecting light branc

Details Optical device with an optical coupler for effecting light branc Optical device with an optical coupler for effecting light branc

1991-10-16

1993-08-24

Ullah, Akm E.

Optical waveguides

With optical coupler

Particular coupling structure

G02B 600

Patent

active

052396002

ABSTRACT:
An optical device includes a channel or three-dimensional light waveguide for propagating a light wave therethrough and an optical coupler for effecting at least one of branching and combining of the light wave by splitting a wavefront of a field distribution of the light wave. The coupler is produced by forming a portion whose reflection factor is different from the waveguide, extending in a vertical direction of the waveguide. The portion of different reflection factor is formed deep enough in the vertical direction to perform the splitting of the wavefront of the field distribution of the light wave with respect to at least a horizontal or lateral direction, or the portion of different reflection factor is formed at a flat portion of the waveguide.

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patent: 4708423 (1987-11-01), Erman et al.
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patent: 4776661 (1988-10-01), Handa
patent: 4793675 (1988-12-01), Handa
patent: 4888785 (1989-12-01), Lee
Fattah et al., "Semiconductor interferometric laser," Applied Physics Letters, vol. 41, No. 2, Jul. 15, 1982, pp. 112-114.
Salzman et al., "Cross coupled cavity semiconductor laser," Applied Physics Letters, vol. 52, No. 10, Mar. 7, 1988, pp. 767-769.

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