Author:
Long Chengbin,Cui Jian,Gao Yuyang,Qiao Gang,Zhu Baolong,Zhang Jiarui,Yang Yu,Shen Lei,Luo Jie,He Yongqi,Chen Zhangyuan,Li Juhao
Abstract
Ultra-wideband mode selective couplers satisfying strict phase-matching conditions across S+C+L bands for mode multiplexing/demultiplexing of a 4-LP-mode FMF are designed and fabricated with side-polishing processing, based on which weakly-coupled FMF transmission is experimentally demonstrated.