光纤传感器光源驱动技术研究

Study on driving technology for fiber-optic sensor light source

驱动电流和有源区温度是影响激光二极管LD、超辐射二极管SLD的光强及光谱稳定性的关键因素。通过控制这些因素,LD/SLD的输出光强稳定性达到了0.5%和0.1%,并可使光源在-30～50℃环境温度范围内正常工作。

The driving current and the temperature of the acti ve area of LD(laserdiode) or SLD(super luminescentdiode) is the key factors that affect the light emission,not only it's intense but also it's spectral char acteristic.These factors are controlled well,LD/SLD's light intense stability at tained 0.5%/0.1%,the LD/SLD can operate well in the ambient temperature range of -30～50?℃.