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基于现代化战争武器和惯导系统对光纤陀螺快启动的强烈需求,对光纤陀螺启动最慢的核心器件光源超辐射发光二极管(SLD)启动时波长的变化机理进行了研究。主要包括对SLD波长随驱动电流和管芯温度的变化规律进行了理论分析和实验验证,得出了SLD的平均波长随驱动电流的增大而减小,变化量约为0.15 nm/m A,随温度线性增加,变化量大约为0.5 nm/°C;根据理论分析驱动电流和管芯温度启动时的变化规律建立了SLD启动时波长的变化模型;通过实验测试得到的驱动电流和管芯温度启动测试结果推导出了SLD启动波长最大变化量达到18 000 ppm;最后根据分析结果提出实现陀螺快启动的波长补偿方案。
Based on the strong demand of modern war weapons and inertial navigation system (FOG) for quick start-up of FOGs, the mechanism of the change of wavelength at the start-up of the slowest source optical fiber superluminescent diode (SLD) of FOG was studied. Mainly including the SLD wavelength with the drive current and die temperature changes in the theoretical analysis and experimental verification that the SLD average wavelength with the drive current increases and decreases by about 0.15 nm / m A, With the temperature increasing linearly, the variation is about 0.5 nm / ° C. According to the theoretical analysis of the driving current and the variation of the die temperature, the changing model of the SLD startup wavelength is established. The driving current and the die temperature The results of the start-up test deduced that the maximum variation of the start-up wavelength of the SLD reached 18 000 ppm. Finally, the wavelength compensation scheme for realizing gyroscope fast start-up was proposed based on the analysis results.