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:
Feb. 04, 1992
Filed:
Jul. 24, 1990
Applicant:
Inventors:
Hideaki Okayama, Tokyo, JP;
Toshimasa Ishida, Tokyo, JP;
Assignee:
Oki Electric Industry Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04J / ;
U.S. Cl.
CPC ...
359124 ; 359128 ; 359135 ;
Abstract
An optical switching system has an optical transmission path for propagating signal beams, and a plurality of optical nodes for transmitting and receiving the signal beams. A reference beam source generates reference beams each having a particular wavelength. Each optical node generates a plurality of signal beams which are tuned to the wavelengths associated with the reference beams.