Tunable multiwavelength erbium-doped fiber laser based on intensity-dependent loss and intra-cavity loss modulation

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• 作者：Jiajun Tian^a ; ¹ ; ^{jiajuntian@gmail.com} ; Yong Yao^a ; ^{yaoyong@hit.edu.cn} ; Jun Jun Xiao^a ; Xuelian Yu^a ; Deying Chen^a ; ^b
• 关键词：Fiber laser ; Multiwavelength laser ; Tunable laser ; Nonlinear optical loop mirror ; Intra-cavity loss modulation
• 刊名：Optics Communications
• 出版年：2012
• 出版时间：1 May, 2012
• 年：2012
• 卷：285
• 期：9
• 页码：2426-2429
• 全文大小：1866 K

文摘

A tunable multiwavelength erbium-doped fiber laser is proposed and experimentally studied. The intensity-dependent loss (IDL) in a nonlinear optical loop mirror is utilized for stable multiwavelength lasing output. The accurate switch operation, i.e., the lasing lines emerge/disappear one by one at the longer wavelength side of the initial one, is achieved by adjusting the intra-cavity loss using a variable attenuator. The effect of the intra-cavity loss on the lasing characteristics is theoretically analyzed. Numerical results confirm the experiment measurements and suggest that both the IDL and the gain spectrum, which vary with the intra-cavity loss, lead to the observed tunable lasing behavior.