中国激光, 2019, 46 (7): 0701007, 网络出版: 2019-07-11
L波段可切换双波长被动锁模光纤激光器 
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L-Band Switchable Dual-Wavelength Passively Mode-Locked Fiber Laser
图 & 表
图 1. 基于CNT-SA的L波段可切换双波长被动锁模光纤激光器的实验装置示意图
Fig. 1. Experimental setup of L-band switchable dual-wavelength passively mode-locked fiber laser based on CNT-SA
图 2. 抽运功率约为57.3 mW,激光器的中心波长为1596.6 nm时的输出结果。(a)输出光谱、脉冲的自相关信号及双曲正割拟合曲线;(b)频谱图(插图为脉冲序列)
Fig. 2. Output of mode-locked fiber laser centered at 1596.6 nm when pump power is about 57.3 mW. (a) Optical spectrum, autocorrelation signal of pulse, and hyperbolic secant fitting curve; (b) frequency spectrum (insert is impulse sequence)
图 3. 抽运功率约为67.1 mW,激光器的中心波长为1572.9 nm时的输出结果。(a)输出光谱、脉冲的自相关信号及双曲正割拟合曲线;(b)频谱图(插图为脉冲序列)
Fig. 3. Output of mode-locked fiber laser centered at 1572.9 nm when pump power is about 67.1 mW. (a) Optical spectrum, autocorrelation signal of pulse, and hyperbolic secant fitting curve; (b) frequency spectrum (insert is impulse sequence)
图 4. 抽运功率约为64.8 mW时双波长锁模光纤激光器的输出。(a)(b)经过滤波器前的输出;(c)(d)经过滤波器后的输出,(c)插图为脉冲的自相关信号
Fig. 4. Output of dual-wavelength mode-locked fiber laser when pump power is about 64.8 mW.(a)(b) Output before filter; (c)(d) output after filter, and insert in Fig. 4(c) shows autocorrelation signal of pulse
图 5. L波段双波长锁模光纤激光器稳定性测试结果。(a)光谱;(b)输出功率
Fig. 5. Stability test results of L-band dual-wavelength mode-locked fiber laser. (a) Spectra; (b) output power
图 6. 激光器的数值模拟结果。单波长锁模光谱在(a) 1592 nm波段和(b) 1572 nm波段演变的模拟结果;(c)双波长锁模光谱的模拟结果(三个插图为不同的洛伦兹透射率的光谱)
Fig. 6. Numerical simulation results of laser. Simulation results about evolution of single-wavelength mode-locked spectra at (a) 1592 nm-band and (b) 1572 nm-band, respectively; (c) simulation result of dual-wavelength mode-locked spectra (three inserts show spectra of different Lorentz transmissivities)
表 1不同状态下抽运功率与输出功率的关系
Table1. Relationship between pump power and output power at different states
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表 2数值模拟中设置的光纤参数
Table2. Fiber parameters in numerical simulation
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刘奂奂, 蒋巧, 宋伟, 喻叶, 李子龙, 庞拂飞. L波段可切换双波长被动锁模光纤激光器[J]. 中国激光, 2019, 46(7): 0701007. Huanhuan Liu, Qiao Jiang, Wei Song, Ye Yu, Zilong Li, Fufei Pang. L-Band Switchable Dual-Wavelength Passively Mode-Locked Fiber Laser[J]. Chinese Journal of Lasers, 2019, 46(7): 0701007.
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