基于宽谱信号光注入的超荧光光纤光源

2018-07-26

作者：李凯，辛璟焘，何巍，孟阔，祝连庆单位：北京信息科技大学

摘要：为实现高功率和高平坦度的C+L波段光超荧光输出，将超辐射发光二极管输出的宽谱信号光注入双程后向掺铒光纤超荧光光源，研究了信号光注入对超荧光光源输出功率和光谱特性的影响，优化了信号光注入功率、泵浦源抽运功率和掺铒光纤长度。结果表明：低功率、宽光谱信号光不仅可以有效提高超荧光光源的输出功率和泵浦效率，还有助于光谱的平坦化；通过使用40mW抽运功率泵浦9m的掺铒光纤，在500W信号光注入时获得了功率为10.59mW、3dB带宽大于41nm的C+L波段超荧光输出。

关键词：光纤光学；超荧光光纤光源；放大自辐射；信号光注入

中图分类号：TN253；TH741文献标志码：A

Erbiumdopedfiber Superfluorescent Source Based on Wide Spectral Signal Light Injection

Li Kai，Xin Jingtao，He Wei，Meng Kuo，Zhu Lianqing

Abstract:The broadspectrum signal light from a super luminescent diode is injected into the dualpassbackward erbiumdopedfiber superfluorescent light source，and the C+L band superfluorescent output with higher power and flatness are realized.The influence of signal light injection on the output power and spectral characteristics of the super fluorescent light source is studied.The results show that the signal with low power and wide spectrum can not only improve the output power and pumping efficiency of the super fluorescent light source，but also contribute to the flattening of the spectrum.The signal injection power，pumpsource pumping power and erbiumdoped fiber length are optimized.In the case of 500μW signal light injection，the C+L band superfluorescence light source is realized by using 40mW pump power to pump 9m erbiumdoped fiber，and the 10.59mW output power and the 3dB bandwidth greater than 41nm are achieved.

Keywords:fiber optics；super fluorescent source；amplified spontaneous emission；signal light injection