基于掺铒光子晶体光纤超荧光光源的实验研究

Experimental Investigation on Superfluorescent Sources Based on Erbium-Doped Photonic Crystal Fiber

为了改进传统掺铒光纤超荧光光源的输出稳定性,提出基于掺铒光子晶体光纤的超荧光光源。构建了单程后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。分析了掺铒光子晶平均波长体光纤长度和抽运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,通过优化选取光纤长度28m和抽运功率220mW,获得了单程后向结构超荧光光源输出如下:输出功率45.74mW、光-光转换效率20.79%、谱宽31.5nm和平均波长1548.003nm。该实验结果为进一步研究掺铒光子晶体光纤超荧光光源在不同环境下的稳定性奠定了基础。

In order to improve the stability of conventional erbium-doped superfluorescent fiber source, a superfluorescent fiber source based on erbium-doped photonic crystal fiber was proposed. A superfluorescent fiber source with a single-pass backward configuration was constructed and the output properties of the new fiber source were researched. The influences of fiber length and pump power on output power, spectral width and mean wavelength of fiber source were analyzed. By choosing the optimized fiber length of 28 m and pump power of 220 mW, the superfluorescent fiber source had an output power of 45. 74 roW, an optical-to-optical conversion efficiency of 20.79 %, a spectral width of 31.5 nm and a mean wavelength of 1548. 003 nm. This result would set the foundation to further investigate the stability of erbium-doped photonic crystal fiber superfluorescent source in the different environment.