A simple high power L-band superfluorescent fiber source
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摘要: 采用双程前向结构,在一根高浓度掺铒光纤中实现了功率高达13.13mW(11.18dBm)、平均波长为1578.53nm的L波段高功率超荧光输出,在1570nm～1620nm间的功率高于9.38mW。可满足分布式光纤光栅传感、DWDM等由C波段向L波段扩展的带宽及功率需求,同时与C波段光匹配后,可得到功率高于20mW的C+L波段宽带高功率光输出。其中采用普通耦合器制作的光纤圈反射器,将后向的C波段ASE重新引回光纤中,提高了抽运源的利用效率和光纤输出光的稳定性,同时分析了光源的输出功率、平均波长、稳定性等随光纤长度、抽运功率的变化特征,对于光源的应用设计提供参考。
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关键词:
- 导波和光纤光学 /
- 超荧光光纤光源(SFS) /
- L波段 /
- 掺铒光纤(EDF) /
- 放大的自发辐射(ASE)
Abstract: High power up to 13.13mW(11.18dBm)of L-band SFS is developed and obtained,the mean wavelength is 1578.53nm,by using configuration of double-pass and highly doped erbium fiber,the power between 1570nm and 1620nm is higher than 9.38mW.It is important for many applicants such as distributed fiber grating sensing,fiber-optic gyroscope,DWDM,which expand from C-band to L-band.Combined with C-band,simultaneous output of C+L band with power of higher than 20mW.Hereinto,a fiber loop reflector made from normal coupler is used to injection the C-band amplified spontaneous emission of backward again enhanced the efficiency of LD and stability of output of fiber.Meanwhile,effects of fiber length and pump power on output,mean wavelength,stability is analysed,it is valuable to the design of SFS. -
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