根据三轴光纤陀螺的高精度需求,采用大功率高稳定性的高精度双程后向方案掺铒光纤光源。通过对ASE光源的理论分析建立数学模型,并根据所用掺铒光纤及泵浦光源的参数对光源进行谱型分析,确定光路方案。再以掺铒光纤和泵浦激光器的温度特...根据三轴光纤陀螺的高精度需求,采用大功率高稳定性的高精度双程后向方案掺铒光纤光源。通过对ASE光源的理论分析建立数学模型,并根据所用掺铒光纤及泵浦光源的参数对光源进行谱型分析,确定光路方案。再以掺铒光纤和泵浦激光器的温度特性和补偿为研究重点,对掺铒光纤的长度和掺杂浓度以及泵浦功率和铒纤的匹配性进行试验,最终采用铒纤长度19 m,泵浦波长974.6 nm,泵浦功率140 m A,得到光源光功率为20 m W,平均波长变化量小于0.5′10^(-6)/℃,满足光纤陀螺对ASE光源的要求。展开更多
A new type of gain flattening filter for amplified spontaneous emission （ASE） source based on erbium doped fiber （EDF） is proposed and demonstrated by fabricating and writing two series ultra-long period fiber gra...A new type of gain flattening filter for amplified spontaneous emission （ASE） source based on erbium doped fiber （EDF） is proposed and demonstrated by fabricating and writing two series ultra-long period fiber grating （ULPFG） on single mode fiber （SMF-28）. The novelty method in this research is based on writing the two ULPFGs as fat gratings. The LPG is written by a simple and available arc-discharge method. The pump power based on single-pass backward pump configuration is around 100mW, and the average wavelength is near to 974nm. The gain flattening profile is obtained by 3.4 （±1.7）dB ripple in the wavelength range between 1524nm and 1565nm with 41-nm band width.展开更多
文摘根据三轴光纤陀螺的高精度需求,采用大功率高稳定性的高精度双程后向方案掺铒光纤光源。通过对ASE光源的理论分析建立数学模型,并根据所用掺铒光纤及泵浦光源的参数对光源进行谱型分析,确定光路方案。再以掺铒光纤和泵浦激光器的温度特性和补偿为研究重点,对掺铒光纤的长度和掺杂浓度以及泵浦功率和铒纤的匹配性进行试验,最终采用铒纤长度19 m,泵浦波长974.6 nm,泵浦功率140 m A,得到光源光功率为20 m W,平均波长变化量小于0.5′10^(-6)/℃,满足光纤陀螺对ASE光源的要求。
文摘A new type of gain flattening filter for amplified spontaneous emission （ASE） source based on erbium doped fiber （EDF） is proposed and demonstrated by fabricating and writing two series ultra-long period fiber grating （ULPFG） on single mode fiber （SMF-28）. The novelty method in this research is based on writing the two ULPFGs as fat gratings. The LPG is written by a simple and available arc-discharge method. The pump power based on single-pass backward pump configuration is around 100mW, and the average wavelength is near to 974nm. The gain flattening profile is obtained by 3.4 （±1.7）dB ripple in the wavelength range between 1524nm and 1565nm with 41-nm band width.
基金Supported by National 863 High Technology Projects(2003AA312100)the National 973 BasicResearch Projects(2003 CB314906)+1 种基金the National Natural Science Foundation Key Projects(60137010)the Tianjin Natural Science Foundation projects(033800211)
