摘要
介绍了掺铒超荧光光纤光源（SFS）的基本原理和SFS各种基本结构的特点。结合实际应用选择了单程后向（SPB）SFS作为光纤陀螺用光源。理论分析了影响单程后向掺铒超荧光光纤光源输出特性的各种因素。通过实验分析了铒纤长度对单程后向掺铒光纤光源泵浦效率和输出光谱的影响，特别是对中心波长稳定性的影响，对于单程后向结构掺铒光纤光源来说，铒纤长度有一个最佳值。演示了铒纤在选择最佳长度的情况下，泵浦功率对输出谱型的影响。通过实验分析了-40℃～60℃之间光源输出光谱和输出光功率的温度稳定性。最终得到了适用于惯导级光纤陀螺的光源。
The operation principle of Erbium-doped superfluorescent fiber source （SFS） and several configurations of Erbium-doped SFS are analyzed. The single-pass-backward （SPB） SFS was selected as the source of the fiber optic gyroscope in the application. The factors which may affect the output characteristics of SPB SFS were investigated theoretically. The effect of the Erbium-doped fiber length on pump effectiveness, mean wavelength, spectral linewidth and thermal stability of SPB SFS were analyzed in experiments. It is found that there is an optimal value for the Erbium-doped fiber length for SPB SFS. Using the optimal Erbium-doped fiber length, the influence of the pump power on the spectral-line shape was demonstrated. The stability of the output spectrum and power of SFS at -40℃-60℃ was discussed. A source suitable for inertial navigation grade FOG was obtained.
出处
《应用光学》
CAS
CSCD
2008年第6期984-989,共6页
Journal of Applied Optics
关键词
光纤陀螺
掺铒超荧光光纤光源
铒纤长度
温度稳定性
fiber optic gyroscope
Erbium-doped fiber super-fluorescent source
Erbium-doped fiber length
temperature stability
