Optical, Integrated waveguide component

• Main Author: JANSSON; MATS A. H
• Format: Patent
• Language: English
• Published: 25.08.1987
• Edition: 4
• Subjects: AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUSPOLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR; CHEMISTRY; CRYSTAL GROWTH; METALLURGY; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE; REFINING BY ZONE-MELTING OF MATERIAL; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE; SINGLE-CRYSTAL-GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL ORUNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL

PCT No. PCT/SE85/00041 Sec. 371 Date Oct. 10, 1985 Sec. 102(e) Date Oct. 10, 1985 PCT Filed Jan. 29, 1985 PCT Pub. No. WO85/03780 PCT Pub. Date Aug. 29, 1985.An optical, integrated waveguide component has a single crystal body (20) e.g. of lithium niobate which has a flat upper surface (22) provided with waveguides (23) and flat parallel end surfaces (21). The crystal has cleavage planes, and an optical axis in the crystal can be defined with a given inclination to these planes. The end surfaces (21) of the body (20) consist of cleavage planes for obtaining small losses when coupling light into the waveguides (23). The upper surface (22) is oriented such that in relation to the crystalline structure, the optical axis of the crystal is in a plane (24) defined by the normals (n2, n1) to the upper surface and the end surfaces. The angle between the upper surface (22) and end surfaces (21) deviates from a right angle by an angle ( beta ) of a most 10 degrees.