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:
Nov. 06, 2012
Filed:
Jun. 25, 2008
Takaaki Kakitsuka, Atsugi, JP;
Shinji Matsuo, Atsugi, JP;
Toru Segawa, Atsugi, JP;
Hiroyuki Suzuki, Atsugi, JP;
Takaaki Kakitsuka, Atsugi, JP;
Shinji Matsuo, Atsugi, JP;
Toru Segawa, Atsugi, JP;
Hiroyuki Suzuki, Atsugi, JP;
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Abstract
There is provided an optical modulation signal generating device in which an operation speed is not limited by a relaxation oscillation frequency of a laser, and high-speed modulation and long-distance transmission can be performed. The optical modulation signal generating device converts a signal from a signal source into an optical signal and outputs the optical signal to a transmission medium having frequency dispersion. The optical modulation signal generating device includes an optical source () for performing frequency modulation by the signal from the signal source to generate an optical signal having only a frequency modulation component, and a frequency filter () for converting the frequency modulation component of the optical signal into an intensity modulation component and a frequency modulation component.