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:
Aug. 11, 1998
Filed:
Mar. 18, 1996
Junichi Yoshimura, Kawasaki, JP;
Fujitsu Limited, Kanagawa, JP;
Abstract
A dispersion compensating apparatus compensates for a dispersion which occurs in a submarine optical fiber transmission system that operates on optical amplification relay principles for the purpose of easily repairing an optical fiber cable and dispersion compensating cables. A plurality of optical amplifiers are placed in the optical fiber cable. The dispersion compensating cables are housed in the casing of each of those of the optical amplifiers which are positioned at dispersion compensating intervals over the optical fiber cable. The dispersion compensating intervals range from about 500 to 1000 km, for example, with a certain tolerance. The optical amplifiers are positioned at intervals of several tens km, for example, and are located within that tolerance. Each of the dispersion compensating fibers has a length in the range of from 20 to 30 km, and is wound around a bobbin.