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:
Feb. 19, 2013
Filed:
Feb. 10, 2010
Congqi LI, Shenzhen, CN;
Zhiyong Huang, Shenzhen, CN;
Zhiwen Chang, Shenzhen, CN;
Yuzhi Jin, Shenzhen, CN;
Da He, Shenzhen, CN;
Jianmei Zhang, Shenzhen, CN;
Shouchang Niu, Shenzhen, CN;
Shixing LI, Shenzhen, CN;
Tianhai Chang, Shenzhen, CN;
Jinghua Song, Shenzhen, CN;
Congqi Li, Shenzhen, CN;
Zhiyong Huang, Shenzhen, CN;
Zhiwen Chang, Shenzhen, CN;
Yuzhi Jin, Shenzhen, CN;
Da He, Shenzhen, CN;
Jianmei Zhang, Shenzhen, CN;
Shouchang Niu, Shenzhen, CN;
Shixing Li, Shenzhen, CN;
Tianhai Chang, Shenzhen, CN;
Jinghua Song, Shenzhen, CN;
Huawei Technologies Co., Ltd., Shenzhen, CN;
Abstract
An upgrading method, a system, and an apparatus of a low-density wavelength division multiplexing (WDM) system are provided. The method includes: detecting an output wavelength shift of a wavelength conversion unit, and adjusting an output wavelength of the wavelength conversion unit having the output wavelength shift higher than a threshold, so that the output wavelength shift of the wavelength conversion unit is lower than the threshold; adjusting an adjustable interleaved demultiplexer, until requirements for a demultiplexing parameter of a high-density WDM system are met. Thus, the problem that services are interrupted when a low-density MDM system is upgraded to a high-density MDM system is solved. A WDM system, and a wavelength multiplexing/demultiplexing apparatus and method are also provided.