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针对目前存在的光纤测量系统中激光光源受温度影响的问题，根据激光二极管（ＬＤ）的光输出特性，采用自动光功率控制电路（ＡＰＣ），通过合理的元件参数配置，研制了光功率稳定可调的激光光源．实验表明，在 １０—４０℃温度范围内激光光源输出的光功率稳定度达到±０．１ｄＢ，达到了标准光源的技术指标．
According to the light output characteristics of laser diode (LD), an automatic optical power control circuit (APC) is adopted to solve the problem that the temperature of the laser light source is affected by the existing optical fiber measurement system. Through reasonable component parameter configuration, the optical power stability Tune the laser light source. Experiments show that in the temperature range of 10-40 ℃ laser light output optical power stability of ± 0.1dB, reached the standard light source of technical indicators.