Microwave Signal Generation From a Dual-Wavelength Single-Frequency Highly $\hbox{Er}^{3+}/\hbox{Yb}^{3+}$ Co-Doped Phosphate Fiber Laser

IEEE Photonics Journal

Shupei Mo¹  Can Li²  Wei Fan²  Zhongmin Yang²  Zhouming Feng²  Shanhui Xu²  Tong Yang²  Changsheng Yang²  Dongdan Chen²  Weinan Zhang² 

[1] $^{1}$State Key Laboratory of Luminescent Materials and Devices and Institute of Optical Communication Materials, South China University of Technology, Guangzhou, China;State Key Laboratory of Luminescent Materials and Devices and Institute of Optical Communication Materials, South China University of Technology, Guangzhou, China;

关键词: Fiber lasers;    microwave photonics;   

DOI  :  10.1109/JPHOT.2013.2290005

来源: DOAJ

【 摘 要 】

Narrow linewidth microwave signals generated from a heterodyne detection configuration of a dual-wavelength (DW) single-frequency highly Er³⁺/Yb³⁺ co-doped phosphate fiber laser is presented. The oscillating cavity of the fiber laser consists of a dual-channel narrow-band fiber-Bragg-grating (DC-NB-FBG), a 0.7-cm-long Er³⁺/ Yb³⁺ co-doped phosphate fiber and a wideband FBG (WB-FBG). The wavelength selecting gratings are spatially separated to create partially separated resonant cavities. Highly Er³⁺/Yb³⁺ co-doped phosphate fiber ensures that the mode competition is relatively weak under low pump power. DW single-frequency lasing with laser linewidths of 3 kHz is achieved. A 12.014-GHz microwave signal with a 3-dB linewidth of 3 kHz is obtained from the heterodyne detection of the DW fiber laser.

【 授权许可】

Unknown