Liu Xuesong, Zhan Li, Luo Shouyu, Gu Zhaochang, Liu Jinmei, Wang Yuxing, Shen Qishun
Department of Physics, Key Laboratory for Laser Plasmas (Ministry of Education), State Key Laboratory of Advanced Optical Communication Systems and Networks, Shanghai Jiao Tong University, Shanghai 200030, China.
Opt Express. 2012 Mar 26;20(7):7088-94. doi: 10.1364/OE.20.007088.
A multiwavelength erbium-doped fiber (EDF) laser based on a nonlinear amplifying loop mirror (NALM) is proposed and experimentally demonstrated. The NALM provides intensity-dependent transmissivity to equalize different-wavelength powers and the transmission can be uniquely optimized by controlling the cavity loss associated with a section of un-pumped EDF, which also enhances the output signal-to-noise ratio (SNR). Through adjusting the polarization controllers (PCs), under only 70 mW pump power, up to 62-wavelength output with channel spacing of 0.45 nm has been achieved. Also, the lasing tunability and stability are verified.
提出并通过实验验证了一种基于非线性放大环镜（NALM）的多波长掺铒光纤（EDF）激光器。NALM提供与强度相关的透射率以均衡不同波长的功率，并且通过控制与一段未泵浦EDF相关的腔损耗，可以唯一地优化传输，这也提高了输出信噪比（SNR）。通过调整偏振控制器（PC），在仅70 mW的泵浦功率下，实现了高达62波长的输出，信道间距为0.45 nm。此外，还验证了激光的可调谐性和稳定性。
