Single optical fiber directional coupler

Details Single optical fiber directional coupler Single optical fiber directional coupler

1977-10-06

1980-12-23

Corbin, John K.

350 9615, G02B 514

Patent

active

042406943

ABSTRACT:
A coupler for transferring signals from a first group of single optical fibers to a second group of single optical fibers. The coupler provided for this purpose is a directional star coupler which is constructed so as to eliminate any need for the employment of a mixing chamber. A covering, or cladding, generally covers each optical fiber in order to prevent light from being emitted through the circumferential surface of such fiber. At an end portion of each of the fibers of both the first and second groups, the cladding is treated so as to allow light to be emitted from the circumferential surface of such portion. The end portions of the fibers of the first group are fed through an opening at one side of a coupling chamber. The end portions of the fibers of the second group are fed through another opening within the coupling chamber. The first and second groups of fibers are arranged within the chamber so that their end faces are in abutment with each other. In this manner, signals transmitted along any of the fibers of the first group are transferred to all of the fibers of the second group.

REFERENCES:
patent: 3809686 (1974-05-01), Chandross et al.
patent: 3874780 (1975-04-01), Love
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patent: 3937557 (1976-02-01), Milton
patent: 4009931 (1977-03-01), Malsby et al.
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patent: 4087156 (1978-05-01), Kao et al.
patent: 4113345 (1978-09-01), Gerndt
Hudson et al., "The Star Coupler:A Unique . . . ", Applied Optics, vol. 13, No. 11, Nov. 1974, pp. 2540-2545.
Barnoski, "Data Distribution using Fiber Optics," Applied Optics, vol. 14, No. 11, Nov. 1975, pp. 2571-2577.

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