Patent
1986-01-13
1987-12-15
Sikes, William L.
350 9610, 350 9630, G02B 610
Patent
active
047128550
ABSTRACT:
Planar optical waveguide having a crystal body consisting of a nonmagnetic substrate having a first magnetooptical layer epitaxially provided on the substrate and a second magnetooptical layer epitaxially provided on the first mangetooptical layer. The two magnetooptical layers consist of a material based on iron garnet. The second magnetooptical layer has a refractice index n.sub.2 which is approximately 1.times.10.sup.-3 to 1.times.10.sup.-2 higher than the refractive index n.sub.1 of the first magnetooptical layer. A layer of a material based on iron garnet and absorbing radiation in the wavelength range of 1.0.ltoreq..lambda..ltoreq.2.5 .mu.m is provided between the substrate and the first magnetooptical layer, said iron garnet-based layer having a refractive index n.sub.A which is higher than the refractive index of the first magnetooptical layer.
REFERENCES:
patent: 3764195 (1973-10-01), Blank et al.
patent: 4236782 (1980-12-01), Caserta et al.
"Integrated Optic: A Report On The 2nd OSA Topical Meeting Pole et al., Applied Optics, vol. 14, No. 3, Mar. 1975.
Tolksdorf, W. et al. "Compositional Inhomogeneities Along The Growth Direction Of Substituted Yttrium Iron Garnet Epilayers." Journal of Crystal Growth, vol. 52, pp. 722-728 (1981).
Bartels Inske E. H.
Dammann Hans O. B.
Klages Claus-Peter
Pross Elke B.
Tolksdorf Wolfgang F. M.
Schechter Marc D
Sikes William L.
U.S. Philips Corporation
Ullah Akm E.
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