摘要
通过理论分析并实验验证了一种能在室温下实现稳定的掺铒光纤激光器(EDF)多波长输出的方法。通过在线形谐振腔中引入正弦相位调制器,抑制了由于掺铒光纤的均匀展宽效应引起的模式竞争,从而避免了在室温情况下不稳定的单波长激射。与此同时,线形谐振腔引起的空间烧孔效应也有利于抑制均匀展宽效应。通过取样光纤光栅(SBG)的选频作用,实验中观察到稳定的5个波长的同时激射,相邻波长间隔为08nm,符合ITU标准。
A method for realizing a stable multiwavelength erbium doped fiber laser at room temperature is analyzed theoretically and obtained experimentally. A sinusoidal phase modulation is inserted in the linear cavity, which suppresses the mode competition owing to the homogeneous broaden line in eribum doped fiber and eliminates the unstable single wavelength lasing at room temperature. What′s more, the spatial hole burning in linear cavity is propitious to suppress the homogeneous broaden line. Simultaneous five wavelength lasing is obtained with 0.8 nm intervals defined by the sampled fiber Bragg grating, which is anchored on the ITU frequency grid.
出处
《中国激光》
EI
CAS
CSCD
北大核心
2004年第11期1293-1295,共3页
Chinese Journal of Lasers
基金
国家自然科学基金(编号:60207004)
上海市启明星计划(编号:02QD14050)资助项目。
关键词
激光技术
光纤激光器
相位调制
多波长
模式竞争
laser technique
fiber laser
phase modulation
multiwavelength
mode competition
