Optical mixing element

Details Optical mixing element Optical mixing element

1979-07-11

1981-12-15

Corbin, John K.

350 9616, G02B 514

Patent

active

043056415

ABSTRACT:
An optical mixing element characterized by two groups of light conducting fibers being connected to one another by a mixer stage. The mixing element of this type exhibits small insertion losses and is to ensure a uniform as possible distribution of power between the outgoing fibers. In order to reduce light losses, the fibers in at least one group such as the outgoing group are fused together without any gaps therebetween to form a fused zone which preferably exhibit a gradual taper. In one embodiment, a mixer stage comprises a glass rod and the fused zones of each of the fiber groups abut against the end surfaces of the rod and taper towards the rod. In another embodiment, the mixer stage forms a part of the constriction which is provided in the fused zone of a group of the light conducting fibers.

REFERENCES:
patent: 4184739 (1980-01-01), d'Auria et al.
Kawasaki et al., "Low Loss Access Coupler for Multimode Optical Fiber Distribution Networks", Applied Optics 7/77.
Hocker, "Unidirectional Star Coupler for Single-Fiber Distribution Systems", pp. 124 & 125, Optics Letters, 10/77.
Ozeki, "New Star Coupler Compatible with Single Multimode Fiber Data Links", 2/23/76, Communications Research Center, Ottawa, Canada.
Hill et al., Efficient Power Combiner for Multiplexing Multiple Sources to Single Fiber Optical Systems, Applied Physics Letters, 12/77.
Hudson et al., "The Star Coupler: A Unique Interconnection Component for Multimode Optical Waveguide Communications Systems", Applied Optics, 11/74.

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