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:
Mar. 08, 2005
Filed:
Feb. 28, 2001
Yutaka Miyamoto, Yokohama, JP;
Akira Hirano, Yokohama, JP;
Kazushige Yonenaga, Yokosuka, JP;
Kenji Sato, Yokosuka, JP;
Hiromu Toba, Yokosuka, JP;
Akihiko Matsuura, Yokosuka, JP;
Yutaka Miyamoto, Yokohama, JP;
Akira Hirano, Yokohama, JP;
Kazushige Yonenaga, Yokosuka, JP;
Kenji Sato, Yokosuka, JP;
Hiromu Toba, Yokosuka, JP;
Akihiko Matsuura, Yokosuka, JP;
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Abstract
A system which improves wavelength tolerance, compensates dispersion in a simple way, reduces limitation of the fiber input power is disclosed. The operation includes receiving a clock signal from a system clock source; modulating a single mode optical signal based on the clock signal and generating an optical pulse signal having two longitudinal modes, the frequency interval thereof being n×B, n being a natural number and B being a transmission speed; generating a partial response signal by converting a binary NRZ signal from a digital signal source in synchronism with the system clock source; and modulating the optical pulse signal based on the partial response signal, and outputting a binary RZ modulated signal. The binary RZ modulated signal is input into a receiver, where two partial response components in the optical spectra of the input signal are divided, and one or both of the components are received.