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:
Dec. 10, 2013
Filed:
Feb. 03, 2011
Zhaoyang HU, Westlake Village, CA (US);
Hucheng LI, Chengdu, CN;
Anbin Wang, Chengdu, CN;
Meiling LU, Chengdu, CN;
Zhaoyang Hu, Westlake Village, CA (US);
Hucheng Li, Chengdu, CN;
Anbin Wang, Chengdu, CN;
Meiling Lu, Chengdu, CN;
Source Photonics, Inc., Chatsworth, CA (US);
Abstract
The disclosure relates to a fast, stable method of output wavelength control in a DWDM optical device, and a circuit configured to perform the method. The method and circuit can control timing and overshoot during conditions of rapid operational changes, such as during power-on or restart of the device. The method and circuit includes optimized APC, TEC and electro-absorption (EA) modulator control hardware and algorithms, to effectively control transient processes. Software and circuitry based on the method(s) are achieved in part by optimizing APC, EA and TEC control algorithms. In combination with hardware/circuit optimization, one can achieve fast turn-on of an optical output signal at a stable wavelength. The method and circuit provides a stable power-up process in which a change of wavelength is small enough to meet DWDM specification requirements, to ensure the elimination and avoidance of crosstalk in adjacent channels in dense wave (sub)systems.