The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 10, 1990
Filed:
Jan. 23, 1989
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A star network optical transmission system comprising a star coupler as a center node, wherein a star coupler is provided with an optical fiber exhibiting a multimode transmission characteristic to an optical signal transmitted by said star coupler at an input portion and an output portion, an optical transmission apparatus having a laser with a wavelength of .lambda. as a light source, an up optical fiber exhibiting a single mode transmission characteristic to a wavelength of .lambda. connecting the optical transmission apparatus to the star coupler, an optical reception apparatus, and a down optical fiber exhibiting a multimode transmission characteristic at a wavelength .lambda. and connecting the optical reception apparatus to said star coupler.