红外与激光工程, 2016, 45 (2): 0217004, 网络出版: 2016-04-05  

利用导通电压降监测SLD的输出光功率

Monitoring SLD optical output power with conduction voltage drop
作者单位
1 中北大学机电工程学院,山西 太原 030051
2 中国兵器科学研究院质量与可靠性中心,北京 100089
3 北方自动控制技术研究所,山西 太原 030006
摘要
由于传统的光功率采集仪精度不高,在实验中无法明显地显示出光功率在短期内的变化,而采集电压的数据采集系统可以很好地解决这个问题。在分析1 310 nm超辐射发光二极管(Super Luminescent Diode,SLD)光源的工作原理的基础上,设计了一种在恒温条件下控制驱动电流来使SLD稳定工作的驱动电路,进行了理论分析和实验验证,给出了利用SLD电压降监测输出光功率的新方法,取得了真实可靠的实验数据。通过SLD光源的驱动实验得出输出光功率与驱动电流和SLD两端电压降的相关关系,结果表明,输出光功率与电流具有良好的线性关系,与电压具有良好的正相关指数关系。利用采集电压降监测SLD的输出光功率,大大提高了测试精度和数据分辨率,同时为SLD退化寿命试验提供了新的电学参数。
Abstract
The accuracy of traditional optical power acquisition instruments is not high, so they are unable to show the change of the optical power clearly in short term during the experiment, while data collection system for collecting voltage can be a good solution to this problem. On the basis of introducing working principle of 1 310 nm SLD light source, a driving circuit was designed, which can make SLD operate steadily by controlling current under the condition with a constant temperature. With the theoretical analysis and experimental verification, a new method of monitoring SLD output optical power by its voltage drop was provided, then true and reliable experimental data were obtained. From the driving experiment for SLD, it has proved that the output power has a certain relationship with driving current and voltage, and results show that the output power has a good linear relationship with the current, a good positive correlation index with the voltage. Taking advantage of collected voltage to monitor SLDoutput light power can greatly improve the test precision and data resolution, at the same time provides new electrical parameters for the SLD degenerate life test.

王瑾, 李波, 郭志明, 李龙星, 王维. 利用导通电压降监测SLD的输出光功率[J]. 红外与激光工程, 2016, 45(2): 0217004. Wang Jin, Li Bo, Guo Zhiming, Li Longxing, Wang Wei. Monitoring SLD optical output power with conduction voltage drop[J]. Infrared and Laser Engineering, 2016, 45(2): 0217004.

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