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

作　　者：白少康 向昱锦 张祖兴 Shaokang Bai;Yujin Xiang;Zuxing Zhang(Advanced Photonic Technology Laboratory,College of Electronic and Optical Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210023,China)

机构地区：[1]Advanced Photonic Technology Laboratory,College of Electronic and Optical Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210023,China

出　　处：《Chinese Physics B》2023年第2期311-315,共5页中国物理B（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant Nos. 91950105 and 62175116);the 1311 talent plan of Nanjing University of Posts and Telecommunications。

摘　　要：We have proposed and constructed a few-mode fiber(FMF)-based comb filter realized by dislocation splicing a fewmode 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 d B. 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.

关 键 词：few-mode fiber mode-locked pulses few-mode long-period fiber comb filter 

分 类 号：TN248[电子电信—物理电子学]