Invention Grant
US07995269B2 Cost effective optical transmission with fast raman tilt transient control
有权
具有快速拉曼倾斜瞬态控制的经济高效的光传输
- Patent Title: Cost effective optical transmission with fast raman tilt transient control
- Patent Title (中): 具有快速拉曼倾斜瞬态控制的经济高效的光传输
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Application No.: US12264873Application Date: 2008-11-04
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Publication No.: US07995269B2Publication Date: 2011-08-09
- Inventor: Xiang Zhou , Martin Birk
- Applicant: Xiang Zhou , Martin Birk
- Applicant Address: US GA Atlanta
- Assignee: AT&T Intellectual Property II, L.P.
- Current Assignee: AT&T Intellectual Property II, L.P.
- Current Assignee Address: US GA Atlanta
- Main IPC: H01S3/00
- IPC: H01S3/00

Abstract:
A method for cost-effective optical transmission with fast Raman tilt or other transient event control uses a combination of Erbium-doped fiber amplifiers (EDFAs) and Raman fiber amplifiers (RFAs), where EDFAs are used as the primary optical amplifiers to compensate the span loss while the RFA (advantageously a forward-pumped RFA) is used only in some specific spans with a feed-forward control circuit serving as a fast Raman tilt transient compensator, the RFA also serving as an optical amplifier. A long haul optical transmission system using feed-forward controlled RFA's periodically spaced along its length, for example, when add-drop multiplexing is used, makes full use of the economics of EDFAs and the fast tilt transient control capability of a RFA enabled by an adjustable speed feed-forward or feed-back control technique.
Public/Granted literature
- US20100296818A1 COST EFFECTIVE OPTICAL TRANSMISSION WITH FAST RAMAN TILT TRANSIENT CONTROL Public/Granted day:2010-11-25
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