掺铒光纤超荧光光源外部增益平坦技术的研究  

Study on gain flattening for erbium-doped superfluorescent light source

作　　者：李丽[1] 贾振安[2] 

机构地区：[1]西藏民族大学信息工程学院,陕西咸阳712082 [2]西安石油大学光电油气测井与检测教育部重点实验室,陕西西安710065

出　　处：《光学仪器》2017年第3期61-67,共7页Optical Instruments

基　　金：陕西省教育厅项目(11JS050;13JS088);2016年西藏自治区高等院校教师专业实践实战能力提高计划项目

摘　　要：为满足光纤布拉格光栅传感和波分复用光纤通信系统对光源光谱平坦度与带宽的要求,利用外部增益平坦技术实现掺铒光纤超荧光光源输出光谱的平坦化。介绍了三种常见的外部增益平坦技术,并通过实验对平坦结果进行比较,由此得出采用长周期光栅增益平坦滤波器是一较好的选择。实验结果表明,平坦波段范围内(1 525~1 540nm)的光谱不平坦度小于±1.1dB,整个C波段光谱的3dB带宽为39.125nm。In order to satisfy the demands for the spectral bandwidth and flatness of light source in the fiber Bragg grating sensing and wavelength division multiplexing（WDM）fiber optic communication system,the output spectrum of amplified spontaneous emission（ASE）needs to be flattened by using the gain filtering technique.Three technologies of gain flattening filter are described in the paper.The experimental results using the described gain flattening filter were compared.The long period fiber grating（LPFG）gain flattening filter is a better choice.Experiments show that with the LPFG gain flattening filter,the flatness of the spectra from1 525 nm to 1 540 nm is less than ±1.1dB,and the linewidth is 39.125 nm with a power ripple of 3dB.

关 键 词：超荧光光源 增益平坦滤波器 长周期光栅 马赫曾德尔干涉仪 

分 类 号：TN253[电子电信—物理电子学]