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. 25, 2003
Filed:
Apr. 03, 2001
Chen-Kuo Sun, Escondido, CA (US);
Lightwave Solutions, Inc., Escondido, CA (US);
Abstract
A method for linearizing optical transmission systems that includes an optical linearizer connected to the output of the optical transmitter. From the output, which includes a modulated signal and a transmitter distortion, the linearizer interacts with the wavelength chirping (d&lgr; ) of the transmitter output. More specifically, the linearizer is characterized by a wavelength dependent optical transfer curve F(&lgr;) that utilizes d&lgr; to induce a compensation distortion. Further, the optical transfer curve F(&lgr;) has a reference wavelength (&lgr; ) and an operating point wavelength offset (&Dgr;&lgr; ). In operation, (&lgr; +&Dgr;&lgr; ) of the optical transfer curve F(&lgr;) is aligned with (&lgr; ) of the output to establish an effective value for the compensation distortion. This compensation distortion is then added with the transmitter distortion to cancel the transmitter distortion from the modulated signal; to thereby linearize the output.