Title:
STAR-TYPE COUPLER FOR MULTIMODE OPTICAL FIBER AND METHOD OF MANUFACTURING MIXER ELEMENT THEREOF
Document Type and Number:
Japanese Patent JPS56147115
Kind Code:
A
Abstract:
An optical star coupler, which includes a mixing element consisting of a planar waveguide having an input and output end for interconnecting two groups of light conducting fibers with a packing density of each group of fibers being as high as possible and the planar waveguide having a thickness approximately equal to the diameter of the fibers, characterized by each fiber which is to be connected to a fiber of a fiber optical system having a diameter approximately equal to the core diameter of this fiber of the fiber optical system and, preferably, the mixing element on the surfaces, which are not connected to the fibers, are in contact with a medium having an index of refraction less than the index of refraction of the mixing element. Preferably, this medium comprises a material having substantially the same coefficient of thermal expansion and is an optical adhesive.
Inventors:
HANSUHERUMAN UITSUTE
Application Number:
JP4162381A
Publication Date:
November 14, 1981
Filing Date:
March 20, 1981
Export Citation:
Assignee:
SIEMENS AG
International Classes:
G02B6/28; G02B27/10; (IPC1-7): G02B5/14; G02B27/10
Domestic Patent References:
| JPS5584602A | 1980-06-26 |
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