2μm波段多波长可调谐光纤激光器研究:2μm波段多波长可调谐光纤激光器研究
Multi- wavelength tunable fiber laser operating at 2 μm band
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作 者:钟敬武[1] 马万卓[2] 张鹏[2] 贾青松[2] 王天枢[2]
ZHONG Jing-wu,MA Wan-zhuo,ZHANG Peng,JIA Qing-song,WANG Tian-shu ( 1. Unit 76327 of PLA, Chenzhou 423026, China ; 2. National and Local Joint Engineering Research Center of Space Optoelectronics Technology, Changchun University of Science and Technology, Changehun 130022, China)
机构地区:[1]解放军76327部队,湖南郴州423026 [2]长春理工大学空间光电技术国家地方联合工程研究中心,吉林长春130022
出 处:《激光与红外》 CSCD 2015年第45卷第3期 262-265页,共4页
Laser & Infrared
摘 要:设计了一种基于马赫-曾德(M-Z)光纤干涉滤波器的可调谐多波长掺铥环形光纤激光器,M-Z光纤滤波器由两个3 d B耦合器级联构成,通过光纤耦合器接入环形腔中,并利用Sagnac光纤反射镜实现反射式滤波。实验利用一个发射功率为250 m W的1573 nm光纤激光器作为泵浦源,通过一个1570/2000 nm波分复用器(WDM)注入一段4 m长单模掺铥光纤(TDF)中获得2μm波段光增益。环形腔内加入偏振控制器(PC)调节腔内损耗,实现了2μm波段可调谐多波长输出,观测到最多3个波长激光。
A tunable multi- wavelength Tm3 +- doped ring fiber laser based on all- fiber Mach- Zehnder( M- Z)interferometer was designed. The Mach- Zehnder fiber filter consisted of two cascaded 2 × 2 3 d B couplers,and it connected to the ring cavity through a fiber coupler and reflecting filter was realized by a Sagnac fiber mirror. In experiment,a fiber laser at 1573 nm with a output power of 250 m W was used as pump source,and the pump laser was injected into a segment of 4 m single- mode Tm3 +- doped fiber through a 1570 /2000 nm wavelength division multiplexer( WDM),and then optical gain at 2 μm band was obtained. A polarization controller( PC) was used for adjusting laser polarization loss in the cavity. By observing tunable multi- wavelength laser around 2 μm band,3 wavelengths were obtained by adjusting the PC.
关键词:光纤激光器 掺铥光纤(TDF) 2μm波段 马赫-曾德干涉仪 多波长
fiber laser ; Tm3+-doped fiber ; 2 μm band ; Mach-Zehnder interferometer ; multi-wavelength ;