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:
May. 16, 2006
Filed:
Dec. 23, 2004
Yuanzhong Xu, Wuhan, CN;
Liping Sun, Wuhan, CN;
Qianggao HU, Wuhan, CN;
Xiaoping Wu, Wuhan, CN;
Shuihua Liu, Wuhan, CN;
Yuanzhong Xu, Wuhan, CN;
Liping Sun, Wuhan, CN;
Qianggao Hu, Wuhan, CN;
Xiaoping Wu, Wuhan, CN;
Shuihua Liu, Wuhan, CN;
Accelink Technologies Co., Ltd., Wuhan, CN;
Abstract
An integrated optical-power adjustable WDM is provided, which has a plurality of channels, each channel having a first input port, a second output port and a third output port, the second output port of one channel being connected to the first output port of the next channel, the first port of each channel having a waveguide, the third port of each channel having a waveguide, each channel comprising a pair of collimating elements composed of a first collimating element and a second collimating element, a thin film filter and a tunable optical filter chip functioning as a variable optical attenuator, wherein the tunable optical filter chip is set between the thin film filter and the third output port for each channel, thereby the respective tunable optical filter chip is integrated into the corresponding internal optical path for each channel of WDM to achieve optical-power control for each channel of the WDM.