Invention Grant
US08457489B2 Method for controlling the center wavelength of at least one narrow band optical channel WDM transmitting device in a WDM network and corresponding WDM transmitting device
有权
用于控制WDM网络中的至少一个窄带光信道WDM发射装置的中心波长和对应的WDM发射装置的方法
- Patent Title: Method for controlling the center wavelength of at least one narrow band optical channel WDM transmitting device in a WDM network and corresponding WDM transmitting device
- Patent Title (中): 用于控制WDM网络中的至少一个窄带光信道WDM发射装置的中心波长和对应的WDM发射装置的方法
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Application No.: US12879935Application Date: 2010-09-10
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Publication No.: US08457489B2Publication Date: 2013-06-04
- Inventor: Michael Eiselt
- Applicant: Michael Eiselt
- Applicant Address: DE Meiningen
- Assignee: ADVA Optical Networking SE
- Current Assignee: ADVA Optical Networking SE
- Current Assignee Address: DE Meiningen
- Agency: The Culbertson Group, P.C.
- Priority: EP09011653 20090911
- Main IPC: H04J14/02
- IPC: H04J14/02
Abstract:
The invention relates to a method for controlling the center wavelength of at least one narrow band WDM optical channel transmitting device in a WDM network. A reflected signal portion of a WDM channel signal is evaluated at the location of a WDM transmitting device. In order to generate the reflected signal portion, the optical multiplexing device or an additional reflective filter may be used, the additional filter revealing a low reflectivity at the desired channel center wavelength and a sharply increasing reflectivity adjacent thereto. The center wavelength of the WDM transmitting device is tuned to this target center wavelength by wavelength-modulating the center wavelength with a predetermined low modulation frequency and predetermined wavelength amplitude. The center wavelength of the WDM transmitting device is tuned such that the first order modulation frequency component of the reflected signal portion is minimized.
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