Invention Grant
US08908265B2 Optical fiber amplifier comprising an embedded filter and a control method with improved feedforward control performance
有权
光纤放大器包括嵌入式滤波器和具有改进的前馈控制性能的控制方法
- Patent Title: Optical fiber amplifier comprising an embedded filter and a control method with improved feedforward control performance
- Patent Title (中): 光纤放大器包括嵌入式滤波器和具有改进的前馈控制性能的控制方法
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Application No.: US13394240Application Date: 2009-09-04
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Publication No.: US08908265B2Publication Date: 2014-12-09
- Inventor: Lutz Rapp
- Applicant: Lutz Rapp
- Applicant Address: LU Luxembourg
- Assignee: Xieon Networks S.a.r.l.
- Current Assignee: Xieon Networks S.a.r.l.
- Current Assignee Address: LU Luxembourg
- Agency: Nelson Mullins Riley & Scarborough LLP
- International Application: PCT/EP2009/006450 WO 20090904
- International Announcement: WO2011/026502 WO 20110310
- Main IPC: H04B10/29
- IPC: H04B10/29 ; H04B10/296 ; H04B10/294
Abstract:
An optical amplifier with improved transient performance has two amplifier stages and a gain flattening filter-inserted between the amplifier stages. A control unit generates a pump control signal for a common pump source pumping both amplifier stages. The pump control signal has a feed-forward component and a feedback component. After a drop of channels the feed-forward control circuit is responsible for the transient performance and fast gain stabilization. The characteristic of the gain flattening filter is taken into account in calculating an optimum feed-forward control signal.
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