A Stable Narrow Line-width Dual-wavelength Fiber Laser Based on Nonlinear Polarization Rotation with a High Finesse Ring Filter
A stable narrow line-width dual-wavelength fiber laser based on nonlinear polarization rotation with a high finesse ring filter is proposed and demonstrated. A polarization-dependent-isolator (PDI) and a section of polarization maintaining fiber (PMF) form an equivalent birefringent filter. Moreover, a ring filter can produce high finesse due to the weak gain generated by the EDF. As a result, two stable wavelengths are generated which both have about 18dB extinction ratio, 16dB side mode suppression ratio (SMSR) and 0.16nm 3dB line-width. Plus, less than 2 pm of the wavelengths shift and smaller than 0.4 dB of the optical power fluctuation when the system is operating in room environment for a period of 40 minutes indicate that the ultra narrow line-width fiber laser is very stable.
fiber laser narrow line-width nonlinear polarization rotation high finesse ring filter
Xiufeng Yang Lei Peng Zhengrong Tong Ye Cao Fengjuan Dong
School of Computer and Communication Engineering, Tianjin Key Laboratory of Film Electronic and Communication Devices, Tianjin University of Technology, 300384, Tianjin, China
国际会议
合肥
英文
1876-1879
2011-09-23（万方平台首次上网日期，不代表论文的发表时间）