Optical waveguides – With optical coupler – Plural
Patent
1991-02-06
1992-05-12
Healy, Brian
Optical waveguides
With optical coupler
Plural
385 34, 385 36, 385115, 359129, 359131, 359709, G02B 628, G02B 632
Patent
active
051132443
ABSTRACT:
The fiber optic combiner/splitter is a positive and negative axicon combination which can convert a ring-shaped beam into a solid beam. The positive half of the axicon is effectively a plano-convex lens where the convex surface is generally a shallow cone. The flat surface of the lens abuts each end of an array of single mode fibers which are arranged in a ring configuration around a support member. The negative half of the axicon is effectively a plano-concave lens which is complementary to the positive lens. The focused beams from the positive half of the axicon are combined to form a single beam which is then directed into a single optical fiber. For conversions in the reverse direction, light is taken from a single multimode fiber and expanded into a ring-like pattern. The ring of light is picked up by the ring of single mode fibers. Each single mode fiber receives an equal amount of optical energy or power to provide good efficiency in splitting of the multiplexed beam.
REFERENCES:
patent: 3547526 (1970-12-01), Devereux
patent: 4834484 (1989-05-01), Gorman et al.
patent: 4842355 (1989-06-01), Gold et al.
patent: 4961622 (1990-10-01), Gorman et al.
patent: 4997250 (1991-03-01), Ortiz et al.
General Dynamics Corporation Electronics Division
Healy Brian
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