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The Design of Semiconductor Laser Driver Based on FPGA

Author: YuShuiZuo
Tutor: GuoShuXu
School: Jilin University
Course: Electronics and Communication Engineering
Keywords: Laser drive power Constant current source Reference voltage
CLC: TN248.4
Type: Master's thesis
Year: 2010
Downloads: 236
Quote: 1
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Abstract


The design attempts to power internal FPGA technology to achieve a combination of hardware and software approach , digital control and optimize circuit design to increase the reliability of the entire system , so that the drive power with a high degree of intelligence , anti-interference ability . temperature control of high precision , power and high stability , no damage to the laser , semiconductor laser drive circuit IP core generated with independent intellectual property rights , in order to meet domestic applications in many fields . Circuit design is a top-down module design methods , and that the decomposition of the whole circuit as a constant current source master loop , over-current protection circuit to prevent the surge circuit and temperature protection circuit and digital-to-analog and analog-to-digital conversion circuit and a series of sub-circuits . Due to the programmability of the FPGA , so the expansion and upgrade of the system easier. Not only saves the cost of the hardware , but also with the use of flexible , easy to modify and advantages . Finally control the input voltage of 0 ~ 5V , 0 ~ 50A and through the LDA in a continuously adjustable steady flow source to establish a linear relationship , in order to adapt to different specifications needed for the operation of the semiconductor laser array , i.e. to achieve a semiconductor laser of the present system output 40A the requirements derived PSpice simulation analysis : Drive a stable and reliable power supply to meet the requirements , the error is within the allowable range .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Photonics technology,laser technology > Laser technology, the maser > Laser > Semiconductor lasers
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