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. 27, 2012
Filed:
Oct. 03, 2008
Jun Zheng, Houston, TX (US);
Chao-hung Tsai, Ningbo, CN;
Jun Zheng, Houston, TX (US);
Chao-Hung Tsai, Ningbo, CN;
Applied Optoelectronics, Inc., Sugar Land, TX (US);
Abstract
A modulated optical system with cross-modulation compensation reduces or corrects cross-modulation that might occur at a target frequency range in a multichannel RF signal that modulates a laser. The system detects the cross-modulation, for example, by detecting an envelope of the RF signal or by detecting RF power fluctuations, generates a cross-modulation detection signal, filters the cross-modulation detection signal at the target frequency range, and imparts a compensating cross-modulation to the RF signal in response to the filtered cross-modulation detection signal.