Star coupler

Details Star coupler Star coupler

1987-07-28

1988-11-22

Sikes, William L.

350 9615, G02B 626, G02B 628

Patent

active

047861312

ABSTRACT:
An M.times.N coupler uses a planar waveguide to couple each of M input channel waveguides to each of N output channel waveguides, the input guides and the output guides being disposed on opposite sides of the planar waveguide. Uniformity of coupling is improved by joining the input channel waveguides to the planar waveguide in a manner to focus the beams emitted by each input guide into the planar waveguide at a common focal point located near the center of the edge where the output guides join the planar waveguide.

REFERENCES:
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patent: 4240694 (1980-12-01), Pan
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patent: 4305641 (1981-12-01), Witte
patent: 4318586 (1982-03-01), Coyne
patent: 4360248 (1982-11-01), Bickel et al.
patent: 4484794 (1984-11-01), Witte
patent: 4523803 (1985-06-01), Arao et al.
patent: 4566753 (1986-01-01), Mannschke
patent: 4652081 (1987-03-01), Fatatry
patent: 4653849 (1987-03-01), Boirat et al.
"Fiber-Optic Crossbar Switch" by J. Kennedy Space Center, NASA Tech. Briefs, vol. 4, No. 1, Spring 1979.
Integrated Optical 4.times.4 Star Coupler on LiNbO.sub.3 by H. Heidrich et al., Electronics Letters, 12/6/84, vol. 20, No. 25/26, pp. 1058-1059.

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