Optical fibre coupler

Details Optical fibre coupler Optical fibre coupler

1979-06-18

1981-03-17

Levy, Stewart J.

350 9615, G02B 516

Patent

active

042563658

ABSTRACT:
Optical fibre coupler comprising at least three branches of the optical fibre type. A three-branch coupler comprises first and second optical fibres having two end frustoconical portions which are fastened to one another. The two frustoconical portions are terminated by a first common spheroidal end centered on their common generatrix and having a diameter substantially greater than the sum of the core diameters of their small end bases. The third branch of the three-branch coupler is constituted by a third optical fibre whose end lies opposite the first spheroidal end. In the case of a four-branch coupler, the fourth branch is constituted by a fourth optical fibre. The ends of the third and fourth optical fibres are formed as two frustoconical portions which are fastened to one another and terminated by a second common spheroidal end analogous to the first spheroidal end. The first and second spheroidal ends lie opposite each other.

REFERENCES:
patent: 4011005 (1977-03-01), Hawkes et al.
patent: 4083625 (1978-04-01), Hudson
B. S. Kawasaki et al "Bulb Ended Fibre Coupling to LED Sources" Optical & Quantum Electronics vol. 7, No. 4, Jul. 1975.
T. Ozeki et al "Efficient Power Coupling using Taper-Ended Multimode Optical Fibres" in Electronics Letts. vol. 12, No. 23, Nov. 1976.

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