A control method and device for fiber amplifier nonlinear laser
A control method and laser technology, applied in the field of optical communication, can solve the problems of high demand for circuit design and debugging, increased development and production costs, large debugging and maintenance costs, etc., to solve high costs, improve accuracy, and solve control accuracy. low effect
Active Publication Date: 2019-03-08
GUANGXUN SCI & TECH WUHAN
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The disadvantages of this control method are: the PD detection unit is required, which increases the corresponding development and production costs; the control accuracy of this method depends on the noise suppression design of the PD detection unit, which has high requirements for circuit design and debugging, and the debugging and maintenance costs are also high. larger
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0031] 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.
[0032] The control method of the nonlinear laser used in the fiber amplifier provided by the present invention mainly includes three steps: the step of reporting and calibrating the backlight power of the nonlinear laser, the step of calculating the control voltage of the PID target value of the nonlinear laser, and the step of using the backlight voltage of the laser as a closed-loop loop. PID hardware control steps.
[0033] Such as figure 1 As shown, in the non-linear pump laser backlight voltage as a PID control method, the pump laser has one input (pump laser drive current) to control the output power of the pump laser; the pump laser generates two outputs, namely the pump Laser ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a control method and device applied to a nonlinear pump laser in an optical fiber amplifier product. The method comprises a laser backlight power calibration step and a laser power PID (Proportion Integration Differentiation) control step. The method comprises the following specific steps: fitting a laser backlight voltage and actual output power of the laser backlight voltage through a least square method curve to obtain a backlight current and output power formula in order to realize sampling of backlight current and calculation of output power; and fitting set power and a laser backlight voltage through the least square method curve to obtain a set power and backlight voltage formula, calculating a PID target backlight voltage through the set power, and realizing locking output of a laser output backlight voltage and the target backlight voltage through a hardware PID circuit. Through adoption of the control method and device, the defect of poor control accuracy due to poor linearization in ordinary backlight voltage PID feedback control is overcome; the power reporting and output power controlling accuracy of various lasers in an optical fiber amplifier module are increased; and the cost is lowered effectively.
Description
technical field [0001] The present invention relates to an optical communication device, in particular to a control method and device for a nonlinear laser used in an optical fiber amplifier, and in particular to a method for controlling the output power of a type of laser using a backlight when the output power and the backlight voltage are nonlinear. A device, and the invention belongs to the technical field of optical communication. Background technique [0002] Currently, there are generally two methods for controlling laser output power in fiber amplifier modules. One is to use backlight voltage as PID feedback control, and the other is to use external PD detection output power as PID feedback control. [0003] When the backlight voltage is used as the PID feedback control, one channel of the sampling laser backlight voltage is used to report the output power, and the other channel is sent to the PID control unit; the actual output optical power is detected by an extern...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/09H01S3/10H01S3/101G05B11/42
CPCG05B11/42H01S3/09H01S3/10007H01S3/101
Inventor 蔡潇付成鹏杨智赵家齐陶金涛余振宇汤晓敏张建涛
Owner GUANGXUN SCI & TECH WUHAN