Experimental demonstration of a few-mode Raman amplifier with a flat gain covering 1530–1605 nm Li, Jiaxiong ; Wang, Lulu ; Du, Jiangbing ; Jiang, Shoulin ; Ma, Lin ; Cai, Chengkun ; Zhu, Long ; Wang, Andong ; Li, Ming-Jun ; Chen, Hao ; Wang, Jian ; He, Zuyuan Abstract Publication: Optics Letters Pub Date: September 2018 DOI: 10.1364/OL.43.004530 Bibcode: 2018OptL...43.4530L