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Chin. Phys. B, 2023, Vol. 32(2): 024209    DOI: 10.1088/1674-1056/ac744f

Wavelength switchable mode-locked fiber laser with a few-mode fiber filter

Shaokang Bai(白少康), Yujin Xiang(向昱锦), and Zuxing Zhang(张祖兴)
Advanced Photonic Technology Laboratory, College of Electronic and Optical Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210023, China
Abstract  We have proposed and constructed a few-mode fiber (FMF)-based comb filter realized by dislocation splicing a few-mode long-period fiber grating (FM-LPFG) with a single-mode fiber (SMF). From an all-fiber laser with a FMF-based comb filter, the generation of switchable single-, dual-, triple-, and quadruple-wavelength continuous light has been achieved. Moreover, wavelength switchable mode-locked pulses have been obtained with the increased pump power. In the experiment, the output wavelength of the mode-locked fiber laser was changed from 1567.72 nm to 1571.04 nm, while the signal-to-noise (SNR) ratio was maintained above 61 dB. The switchable multiwavelength continuous wave (CW) and mode-locked all-fiber lasers have potentially important applications for fiber sensing, wavelength-division multiplexing (WDM) and signal processing.
Keywords:  few-mode fiber      mode-locked pulses      few-mode long-period fiber      comb filter  
Received:  16 March 2022      Revised:  18 May 2022      Accepted manuscript online:  29 May 2022
PACS:  42.55.Wd (Fiber lasers)  
  42.65.Re (Ultrafast processes; optical pulse generation and pulse compression)  
  42.81.Dp (Propagation, scattering, and losses; solitons)  
  42.81.-i (Fiber optics)  
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 91950105 and 62175116) and the 1311 talent plan of Nanjing University of Posts and Telecommunications.
Corresponding Authors:  Zuxing Zhang     E-mail:

Cite this article: 

Shaokang Bai(白少康), Yujin Xiang(向昱锦), and Zuxing Zhang(张祖兴) Wavelength switchable mode-locked fiber laser with a few-mode fiber filter 2023 Chin. Phys. B 32 024209

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