Multifrequency erbium-doped fiber laser operating at room temperature.
A method to realize room-temperature operation of a multifrequency Er-doped fiber laser with low-frequency shift feedback placed within a linear laser cavity is theoretically proposed and experimentally demonstrated. Simultaneous multiwavelength lasing with 0.5 nm wavelength spacing is experimentally demonstrated by applying a sinusoidal signal of 10 kHz to a fiber phase modulator inserted within the linear cavity to prevent single wavelength steady-state oscillation. In the linear cavity, an all-polarization-maintaining fiber Sagnac loop is used as a periodic filter, and a single-mode fiber loop with a polarization controller is used as a partial reflector and also as an output port.
Zhou
Kejiang
K
Department of Information Science & Electronic Engineering, Zhejiang University, Hangzou, China. ekjzou@zju.edu.cn
Ngo
Quoc Nam
QN
Zhang
Xulin
X
Jin
Zhonghe
Z
Zhou
Dongyun
D
Liu
Duan
D