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:
Sep. 23, 2003
Filed:
Dec. 03, 2001
Shinichi Wakabayashi, Kanagawa, JP;
Yoshinori Takeuchi, Tokyo, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
An object of the present invention is to provide a device that performs dispersive compensation in an optical fiber transmission path, such as performing waveform shaping in optical fiber transmission. This adaptive dispersion compensating element is provided with a chirp Bragg grating formed in an optical fiber, a temperature gradient impressing means that impresses a temperature gradient along the longitudinal direction of the chirp Bragg grating, a spectral resolving means that spectrally resolves the output light from the chirp Bragg grating, a detecting means that detects the output light from the spectral resolving means, and a control means that performs feedback control of the temperature gradient impressing means based on the output from the detecting means and provides a compact and high-stability device that performs the dispersive compensation in the optical fiber transmission path, such as performing the waveform shaping in the optical fiber transmission.