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. 30, 2010
Filed:
Mar. 04, 2005
Yoshinobu Maeda, Yokkaichi-shi, Mie 510-0874, JP;
Yoshinobu Maeda, Yokkaichi-shi, Mie 510-0874, JP;
Other;
Abstract
In the three-terminal optical signal amplifying device, a portion of the neighboring light Lat other wavelength than that of the first wavelength λthat is selected from the output light from the elementby the optical add drop filter, and the control light Lat the second wavelength λinput from the external are together input to the second semiconductor optical amplifying element. The output light including the output signal light Lat the second wavelength λand the neighboring light at the neighboring wavelength to the second wavelength λthat is modulated and controlled by the control light Lin the cross gain modulation is output from the second semiconductor optical amplifying element. And the output signal light Lat the second wavelength λpasses through the wavelength selecting filter