面向微型光纤陀螺(FOG)应用需求,提出并优化设计了一种微型掺铒超荧光光源。该超荧光光源结构尺寸 为 Φ 50 mm × 15 mm, 通过采取优化的光路设计、光谱平坦滤波技术、 抽运激光器及光源精密温度控制技术等,得到高稳定性的超荧光光源,其输出功率大于13 dBm, 光谱带宽大于35 nm, 功率变化小于1%, 中心波长变化率小于 5×10－6 。采用实验方式对超荧光光源光谱的温度和时间稳定性、 输出功率的温度和时间稳定性进行了细致的测试。实验结果表明微型超荧光光源光谱和输出功率都能够承受严苛的温度冲击实验,满足指标要求。

A micro erbium-doped fiber super-fluorescent light source is proposed and optimized to meet the requirements of fiber optic gyroscope(FOG). The size is Φ 50 mm × 15 mm. By using the optimized optical design, gain flat filter and some control methods for laser pump and erbium fiber, high performance and stable super fluorescent light source is achieved. The output power is more than 13 dBm. Spectral bandwidth is widen to more than 35 nm. The power fluctuation is less than 1% and the change rate of mean wavelength is less than 5×10－6. The power and temperature stability of the super-fluorescence light source are measured as well. Both the spectrum and output power of micro super-fluorescent light source can withstand severe temperature impact and meet FOG requirements.