Erbium-doped photonic crystal fiber superfluorescent sources in double-pass forward configuration
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摘要: 为了获得高稳定光纤陀螺掺铒光纤光源和改进传统掺铒光纤超荧光光源的输出稳定性，提出和使用掺铒光子晶体光纤作为超荧光光源的增益媒介。构建了双程前向结构掺铒光子晶体光纤超荧光光源， 研究了这种新型光源的输出特性。分析了掺铒光子晶体光纤长度和泵浦功率对光源输出功率、光谱谱宽和平均波长的影响。结果表明，通过选取光纤长度为10 m 和泵浦功率为220 mW，获得了双程前向结构掺铒光子晶体光纤超荧光光源。输出功率为35.4 mW，光光转换效率约16.09%，谱宽为30.9 nm，平均波长为1 548.3 nm。该结果为进一步研究掺铒光子晶体光纤超荧光光源的环境温度稳定性和适应性奠定基础。Abstract: In order to obtain high-stable erbium-doped fiber source used fiber-optic gyroscope and improve the stability of conventional erbium-doped superfluorescent fiber source, erbium-doped photonic crystal fiber as a superfluorescent fiber source of gain medium was proposed and employed. A superfluorescent fiber source with a double-pass forward configuration was constructed and the output properties of the new fiber source were studied. The influences of fiber length and pump power on output power, spectral width and mean wavelength of fiber source were analyzed. The results show that the superfluorescent fiber source had an output power of 35.4 mW, an optical conversion efficiency of 16.09%, a spectral width of 30.9 nm and a mean wavelength of 1 548.3 nm by choosing the optimized fiber length of 10 m and pump power of 220 mW. This result would set the foundation to further investigate the stability and adaptability of erbium-doped photonic crystal fiber superfluorescent source in the different environment temperatures.
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