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Research of the Characteristics of Fiber Bragg Grating as the Cavity Mirror in All-fiber Laser
Author(s): 
Pages: 48-52
Year: Issue:  4
Journal: Journal of Chongqing Normal University(Natural Sci

Keyword:  光纤激光器 光纤光栅 折射率调制深度 耦合模理论;
Abstract: 选用介质膜作谐振腔镜,光纤激光器就缺乏有效的选频机制,使得输出激光线宽较宽,纵模频率和输出功率不够稳定;而光纤光栅作为激光器的谐振腔镜,可以得到稳定的窄线宽激光输出。通过对光纤光栅的形成机理和布拉格光栅选频原理分析,得到双布拉格光纤光栅线型谐振腔的理论。光纤光栅谐振腔的长度与光纤光栅中心波长满足S=(2m-1)λmax/4neff,光纤光栅比介质膜更适合做光纤激光器谐振腔镜。
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