supported by the National Natural Science Foundation of China(No.61571237);the Postgraduate Research and Innovation Program Project of Jiangsu(No.KYCX20_0795)。
Based on the nonlinear and mode coupling effect in few-mode photonic crystal fiber(FM-PCF),an approach for supercontinuum(SC)generation in the mid-infrared(MIR)region is proposed.The propagation characteristics of Ge_...
supported by the National Natural Science Foundation of China(Nos.11674177,61775107,61835006 and 11704283);the Natural Science Foundation of Tianjin in China(No.16JCZDJC31000);the Scientific Research Planning and Development Project of Handan in China(No.1621203035)
A twist sensor with hybrid few-mode tilted fiber Bragg grating(FM-TFBG) and few-mode long period grating(FM-LPG) in fiber laser cavity is demonstrated. The FM-LPG is utilized to excite LP11 core mode. The FM-TFBG is u...
supported by the National Natural Science Foundation of China(Nos.61322510,61640408 and 61775107);the Tianjin Natural Science Foundation(No.16JCZDJC31000)
We propose and demonstrate experimentally a multimode oscillation Q-switched erbium-doped fiber laser with a few-mode fiber cavity. The different coupling processes of reflection peaks of fiber Bragg gratings(FBGs) wh...