Patent
1977-10-06
1980-07-22
Levy, Stewart J.
G02B 514
Patent
active
042136709
ABSTRACT:
A planar, optical star and access coupler for multiterminal communication systems which use multimode fibers as the transmission line either as a plurality of single fiber lines, in multichannel fiber cable or in minibundles. The fibers are placed in a row so that the core ends abut the end of a high-aspect angle rectangular cross section clad ribbon fiber which is preferably not as thick as the diameter of the core of the individual fibers for optimum packing fraction loss. Optical radiation, such as from a laser or light-emitting diode, entering the ribbon-fiber mixer element from all of the fibers on one end will be mixed by the ribbon fiber and be transmitted equally on each of the output fibers. Also, radiation from any one fiber will be divided equally between all of the transmission fibers on the opposite end of the ribbon fiber.
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patent: 3901582 (1975-08-01), Milton
patent: 3902786 (1975-09-01), Brown
patent: 4021097 (1977-05-01), McMahon
patent: 4139259 (1979-02-01), Kersten et al.
Altman "Fiber Optics Applications in the Shipboard Data Multiplex System" LC/TR 1995 Aug. 1976, pp. 20-36.
Altman et al. Paper THEI in Conference on Laser & Electro Optical Systems, May 1976.
McMahon et al. "Distributive Tee Couplers" Applied Physics Letters vol. 28, No. 7, Apr. 1976, pp. 396-398.
Hudson et al. "The Star Coupler. . ." Applied Optics, vol. 13, No. 11, Nov. 1974, pp. 2540-2545.
Giallorenzi Thomas G.
Milton A. Fenner
Crane Melvin L.
Levy Stewart J.
Schneider Philip
Sciascia R. S.
The United States of America as represented by the Secretary of
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