Input/output coupler for multi-mode optical fibers

Details Input/output coupler for multi-mode optical fibers Input/output coupler for multi-mode optical fibers

1977-06-07

1979-08-14

Hille, Rolf G.

350 9615, G02B 514

Patent

active

041643640

ABSTRACT:
An input/output coupler for multi-mode optical or light conducting fibers comprises a substrate, a first light conductor, which is disposed on the substrate and has an end face forming a coupling point or surface, a main light conducting fiber, which is disposed on the substrate with an end face at the coupling surface and a center of the end face offset by a distance a from the center of the coupling surface, and a strip waveguide, which is coupled to a branch light conducting fiber and is disposed on the substrate with an end face in contact with a portion of the coupling surface so that a portion of a light signal entering the coupler in the first light conductor is applied to both the main and branch light conducting fibers and signals entering the coupler in the branch and main light conducting fibers are applied to the first light conductor. The first light conductor may be either a light conducting fiber or an additional strip waveguide, which is coupled to a light conducting fiber. Preferably, the substrate has guide grooves formed in a layer of material for positioning the various light conducting fibers and the material of the layer is the same as the material used to form the strip waveguide.

REFERENCES:
patent: 3902786 (1975-09-01), Brown
patent: 4008061 (1977-02-01), Ramsay
S. Sheem and J. R. Whinnery, "Guiding by Single Curved Bounderies in Integrated Optics", Wave Electronics, vol. 1, No. 1, 1974, pp. 61-68.

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