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.:

US 7064888 B1

PDF
Full Text
Expired
Date of Patent:
Jun. 20, 2006

Filed:

Dec. 07, 2005
Applicants:

Tetsuya Uda, Yokohama, JP;

Ryoichi Miyake, Yokohama, JP;

Takeshi Nakada, Yokohama, JP;

Yoshimasa Kusano, Yokohama, JP;

Elichirou Takizawa, Yokohama, JP;

Inventors:

Tetsuya Uda, Yokohama, JP;

Ryoichi Miyake, Yokohama, JP;

Takeshi Nakada, Yokohama, JP;

Yoshimasa Kusano, Yokohama, JP;

Elichirou Takizawa, Yokohama, JP;

Assignee:

Hitachi, Ltd., Tokyo, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B 10/12 (2006.01);
U.S. Cl.
CPC ...
Abstract

There is suppressed deterioration of transmission quality resulting from FWM light generated in the optical fiber of an optical transmission apparatus that performs wavelength division multiplex transmission. To suppress deterioration of the transmission quality due to the FWM light, the sender apparatus adjusts the intensity of wavelength-division-multiplexed light output to the optical fiber, according to a level of FWM crosstalk observed by receiver apparatus.


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Uda, Tetsuya. (2006). Optical transmission equipment for suppressing a four wave mixing and optical transmission system (U.S. Patent No. 7064888). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7064888

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