Passively mode-locked erbium-doped fiber laser via a D-shape-fiber-based MoS<sub>2</sub> saturable absorber with a very low nonsaturable loss

Passively mode-locked erbium-doped fiber laser via a D-shape-fiber-based MoS₂ saturable absorber with a very low nonsaturable loss

Duan Li-Na, Su Yu-Long, Wang Yong-Gang^†,, Li Lu, Wang Xi, Wang Yi-Shan

Experimental results: (a) optical spectrum, (b) oscilloscope trace, (c) autocorrelation trace.