CAJ | 학술논문

　　为了实现光纤的精确快速测量，设计了一种高稳定功率连续可调的1310nm/1550nm半导体激光驱动电源。该电源采用电流串联负反馈技术组成精密恒流源驱动半导体激光二极管，恒温控制电路驱动半导体制冷器，从而保证了激光器输出功率的稳定。控制器局域网络总线电路实现激光源的功率连续可调及激光的选择，通过变速积分PID控制算法消除了积分饱和，加速系统温度的稳定。采用激光保护和软启动电路，实现半导体激光器可靠稳定运行。结果表明，半导体激光器工作在室温25℃时，温度稳定性达±0.01℃，激光长期输出功率稳定度达±0.018dB。相对于传统的1310nm/1550nm半导体激光光源，该光源稳定性高、稳定速度快、体积小，方便光纤在线测量。
　　위료실현광섬적정학쾌속측량，설계료일충고은정공솔련속가조적1310nm/1550nm반도체격광구동전원。해전원채용전류천련부반궤기술조성정밀항류원구동반도체격광이겁관，항온공제전로구동반도체제랭기，종이보증료격광기수출공솔적은정。공제기국역망락총선전로실현격광원적공솔련속가조급격광적선택，통과변속적분PID공제산법소제료적분포화，가속계통온도적은정。채용격광보호화연계동전로，실현반도체격광기가고은정운행。결과표명，반도체격광기공작재실온25℃시，온도은정성체±0.01℃，격광장기수출공솔은정도체±0.018dB。상대우전통적1310nm/1550nm반도체격광광원，해광원은정성고、은정속도쾌、체적소，방편광섬재선측량。
A high stability and continuously adjustable 1310nm/1550nm semiconductor laser power supply was designed for accurate and rapid measurement of the optical fiber .The laser power supply uses precision constant current source to drive the semiconductor laser diodes by applying the current negative feedback control technology and constant temperature control circuit to drive thermoelectric coolers , and ensures the stability of the laser output power .The contrdler area network bus circuit realizes continuous power adjustment and laser source selection , and variable integration proportion-integration-differentiation algorithm eliminates the integral saturation and accelerates the system temperature stability.The laser power supply works reliably and stably under laser protection and soft -start circuit.The experimental results show that the system has stability of temperature of ±0.01℃and the long-term output power stability of ±0.018dB when the laser works at room temperature 25℃.Compared with the traditional 1310nm/1550nm laser power supply, the system has high and fast stability , small size and facilitates the optical fiber online measurement .