Jun Chang Su, Kim Byoung Yoon
Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), Yuseong-gu, Daejeon, South Korea.
Opt Express. 2011 Mar 28;19(7):6290-5. doi: 10.1364/OE.19.006290.
We describe experimental investigation of pulsed output from a multi-wavelength fiber ring laser incorporating low frequency phase modulation with large modulation amplitude. The Erbium-doped fiber (EDF) ring laser generated more than 8 wavelength channels with the help of a phase modulator operating at 26.2 kHz and a periodic intra-cavity filter. For most cases, the laser output is pulsed in the form of mode-locking at 5.62 MHz and/or Q-switching at harmonic and sub-harmonic of the phase modulation frequency. Chaotic pulse output is also observed. The behavior of the output pulses are described as functions of pump power and phase modulation amplitude. The relative intensity noise (RIN) value of a single wavelength channel is measured to be under -100 dB/Hz (-140 dB/Hz beyond 1.5 GHz).
我们描述了对一种多波长光纤环形激光器脉冲输出的实验研究，该激光器采用了具有大调制幅度的低频相位调制。掺铒光纤（EDF）环形激光器借助一个工作在26.2 kHz的相位调制器和一个周期性腔内滤波器产生了8个以上的波长通道。在大多数情况下，激光输出以5.62 MHz的锁模形式和/或相位调制频率的谐波及次谐波处的调Q形式出现脉冲。还观察到了混沌脉冲输出。输出脉冲的行为被描述为泵浦功率和相位调制幅度的函数。单个波长通道的相对强度噪声（RIN）值测得低于-100 dB/Hz（在1.5 GHz以上为-140 dB/Hz）。
