Optical branching device with internal waveguide

Details Optical branching device with internal waveguide Optical branching device with internal waveguide

1983-12-06

1987-09-15

Lee, John

Multiplex communications

Wide area network

Packet switching

350 9612, 350 9613, 350 9615, 370 1, G02B 628

Patent

active

046935444

ABSTRACT:
An optical waveguide device of the invention has an optical waveguide which is a region formed in a transparent substrate and has a refractive index higher than that of the transparent substrate. The optical waveguide consists of first and second optical waveguide elements each having one end exposed to a surface of the transparent substrate and the other end connected in the vinicity of the surface of the transparent substrate, such that the connecting portion thereof is exposed to the surface of the transparent substrate.

REFERENCES:
patent: 4223977 (1980-09-01), Papuchon et al.
patent: 4306765 (1981-12-01), Winzer et al.
patent: 4375312 (1983-03-01), Tangonan
patent: 4468085 (1984-08-01), Papuchon et al.
Snedaker, "Liquid Crystal Optical Switch", IBM Tech. Discl. Bulletin, vol. 25, No. 4, Sep. 1982, pp. 1855-1856.

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