Control method and system for cascaded hybrid amplifier

A control method and amplifier technology, applied in the transmission system, electromagnetic wave transmission system, laser monitoring device, etc., can solve problems such as failure, Raman gain control accuracy is not perfect, etc., to achieve the effect of improving performance and control accuracy

Active Publication Date: 2017-06-27
GUANGXUN SCI & TECH WUHAN
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Problems solved by technology

Such a control method has been proved to be effective in practical engineering applications, but it is not perfect in Raman's gain control accuracy
Therefore, some control techniques using gain calibration methods to improve Raman's gain accuracy have been proposed, so that for a single Hybrid in the laboratory, Raman's gain control accuracy is improved; however, in actual engineering applications, for multiple When the Hybrid cascade is used, this method of gain calibration will fail

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  • Control method and system for cascaded hybrid amplifier
  • Control method and system for cascaded hybrid amplifier
  • Control method and system for cascaded hybrid amplifier

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Embodiment Construction

[0029] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be introduced below in conjunction with the embodiments of the present invention and the accompanying drawings.

[0030] The present invention is mainly aimed at realizing the automatic gain calibration function of Raman in the process of starting the pump of the Hybrid through the joint control of Raman and EDFA in the process of starting the pump of the Hybrid amplifier when the Hybrid amplifier is used in cascading. In the existing Hybrid, there is a unit responsible for controlling Raman and EDFA, which is generally controlled by MCU (microprocessor) and FPGA (programmable logic array). The control goal is to make the Raman amplifier finally work in the AGC mode, and the EDFA amplifier also needs to work in the AGC mode, and the AGC mode means the automatic gain control mode. During specific i...

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Abstract

The present invention provides a control method and system for cascaded Hybrid amplifiers. Each Hybrid amplifier in the cascaded Hybrid amplifier starts to execute the pumping process at the same time: when the Hybrid amplifier receives a pumping request, it judges that the condition is met and performs Raman's input light. To judge power stability, turn on the EDFA pump, and the EDFA enters the APC working mode; turn on the Raman pump, and when no reflection alarm occurs, calculate the gain deviation according to the input optical power before and after the Raman pump is turned on; adjust the Raman gain according to the gain deviation, and switch to An AGC working mode, the AGC working mode is an automatic gain control working mode; the working mode of the EDFA is switched to the AGC working mode. The invention can precisely control the Raman gain, improves the control precision and improves the performance of the cascaded Hybrid amplifier.

Description

technical field [0001] The invention belongs to the field of power distribution operation, and in particular relates to a control method and system of a cascaded Hybrid amplifier. Background technique [0002] At present, the main method of Raman gain control in Hybrid amplifier (hybrid amplifier) ​​is still based on the control method of feedforward and feedback. Such a control method is proved to be effective in practical engineering applications, but it is not perfect in Raman's gain control accuracy. Therefore, some control techniques using gain calibration methods to improve Raman's gain accuracy have been proposed, so that for a single Hybrid in the laboratory, Raman's gain control accuracy is improved; however, in actual engineering applications, for multiple When the Hybrid cascade is used, this method of gain calibration will be invalid. see figure 1 , and the three Hybrid amplifiers are recorded as Hybrid1, Hybrid2, and Hybrid3 respectively, and each Hybrid ampl...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/293H04B10/071
CPCH01S3/06758H01S3/10015H01S3/1608H01S3/0014H01S3/10069H01S2301/04H04B10/2935H01S3/302H01S3/2375H01S3/13013H01S3/1001H04B10/071H04B10/293H01S3/06754H04B10/2942
Inventor 景运瑜付成鹏陶金涛张翠红熊涛杨智
Owner GUANGXUN SCI & TECH WUHAN
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