Tunable Broadband Mode Converter Based on Long-Period Fiber Gratings at 2-μm Waveband Li, Mingxu ; Huang, Zinan ; Liu, Zuyao ; Jiang, Chen ; Mou, Chengbo ; Liu, Yunqi Abstract Publication: Journal of Lightwave Technology Pub Date: August 2021 DOI: 10.1109/JLT.2021.3082288 Bibcode: 2021JLwT...39.5134L