Patent
1987-05-04
1988-05-31
Sikes, William L.
350 9612, 350 9613, 350 9614, 3501622, 35016223, G02B 634, G02B 518
Patent
active
047476540
ABSTRACT:
Optical guidance structure comprising a monomode input guide having a particular direction (De), two monomode output guides having directions (Ds.sub.1, Ds.sub.2) symmetrically inclined with respect to the direction (De) of the input guide and a widened junction zone between the input guide and the output guides. A diffraction grating is located between the input guide and the junction. The grating has a spacing which defines only two diffraction directions of orders differing from zero, respectively +1 and -1. The spacing is chosen so that these two diffraction directions coincide with the directions of the first two output guides.
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Baets et al., "Calculation of Radiation Loss in Integrated-Optic Tapers and Y-Junctions", Appl. Opt., vol. 21, No. 11, 6/82, pp. 1972-1978.
Healy Brian M.
Sikes William L.
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