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针对SLD(Super-luminescent Diodes)光源的光功率和中心波长会随着驱动电流和工作温度的漂移而发生变化的现象,通过SLD的工作原理对该现象进行了理论分析,基于8脚蝶型SLD光源的实验,分析了光功率和中心波长受电流和温度变化的特点,分别建立了光功率和中心波长随驱动电流和工作温度之间关系的非线性数学模型,设计了SLD光源参数不稳定性的补偿方案,对SLD光源参数不稳定性引起的漂移进行补偿,从补偿前后光纤陀螺的测试输出脉冲数据可以看出,该补偿方法可以有效地改善光纤陀螺的在复杂工作环境下的长期稳定性,降低了光纤陀螺对恒流、恒温电路的要求。
According to the phenomenon that the optical power and center wavelength of the Super-luminescent Diodes (SLD) light sources change with the drifting of the drive current and the working temperature, the phenomenon is theoretically analyzed by the working principle of the SLD. Based on the 8-pin butterfly SLD Light source experiment, the characteristics of optical power and center wavelength affected by current and temperature are analyzed. A nonlinear mathematical model of optical power and center wavelength with the relationship between driving current and operating temperature is established respectively. The instability of SLD light source parameters The compensation scheme can compensate the drift caused by the instability of the SLD light source parameters. It can be seen from the test output pulse data of the FOG before and after compensation that the compensation method can effectively improve the long-term stability of the FOG in a complex working environment , Reducing the FOG on the constant current, constant temperature circuit requirements.