1.6μm波段锁模光纤激光器  

1.6μm band mode-locked fiber laser

作　　者：孙有生 端木庆铎[1] 林鹏 马万卓 王天枢 SUN You-sheng;DUANMU Qing-duo;LIN Peng;MA Wan-zhuo;WANG Tian-shu(College of Science,Changchun University of Science and Technology,Changchun 130022,China;College of Opto-Electronic Engineering,Changchun University of Science and Technology,Changchun 130022,China;National and Local Joint Engineering Research Center of Space Optoelectronics Technology,Changchun University of Science and Technology,Changchun 130022,China)

机构地区：[1]长春理工大学理学院,吉林长春130022 [2]长春理工大学光电工程学院,吉林长春130022 [3]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：《中国光学》2021年第6期1387-1394,共8页Chinese Optics

基　　金：国家自然科学基金青年科学基金(No.62005024);吉林省科技发展计划(No.2019201271JC)。

摘　　要：为了获得基于孤子自频移效应的1.6μm波段锁模脉冲,设计了一种非线性偏振旋转的掺铒光纤激光器,并利用双输出结构检测脉冲。在泵浦功率为350 mW时,通过适当调节偏振控制器,同时在两个输出端观察到中心波长为1560 nm的类噪声脉冲,3 dB带宽为17.5 nm,脉冲持续时间为968 fs。进一步将泵浦功率增加至550 mW,输出端1的类噪声脉冲保持不变,输出端2的类噪声脉冲的中心波长红移至1614 nm,3 dB带宽增加至64.4 nm,脉冲持续时间减小至302 fs。谐振腔的最大输出功率为11.4 mW。同时,实验分析了色散位移光纤的长度对孤子自频移的影响,结果表明,在一定范围内,色散位移光纤的长度越长,孤子自频移的频移间距越小。实验研究的1.6μm波段光纤激光器在光学通信领域具有潜在的应用价值。In order to obtain the 1.6μm-band mode-locked pulse based on the soliton self-frequency shift ef-fect,an erbium-doped fiber laser with nonlinear polarization rotation is designed,whose pulse is detected by a dual-output structure.At a pump power of 350 mW,the noise-like pulses with the central wavelength of 1560 nm are detected at the two outputs at the same time by properly adjusting the polarization controller.The 3 dB bandwidth is 17.5 nm,and the pulse duration is 968 fs.When the pump power is further increased to 550 mW,and the 1-port noise-like pulse remains fixed,the central wavelength of the 2-port noise-like pulse redshifts to 1614 nm,the 3 dB bandwidth increases to 64.4 nm,and the pulse duration decreases to 302 fs.The maximum output power of the resonant cavity is 11.4 mW.The experiment also analyzes the in-fluence of the length of dispersion shifted fiber on soliton self-frequency shift.The results show that within a certain range,as the length of the dispersion shifted fiber increases,the frequency shift distance of the soliton self-frequency shift decreases.This 1.6-μm band fiber laser has potential applications in the field of optical communications.

关 键 词：孤子自频移 非线性偏振旋转 光纤激光器 类噪声脉冲 色散位移光纤 

分 类 号：TN248[电子电信—物理电子学]