Low-loss,high-purity,and ultrabroadband all-fiber LP_(41)mode converter employing a mode-selective photonic lantern[Invited]  

作　　者：陈亮 郭慧毅 史泽昆 昌文喆 陈柏瑜 王志 刘艳格 Liang Chen;Huiyi Guo;Zekun Shi;Wenzhe Chang;Boyu Chen;Zhi Wang;Yan-ge Liu(Institute of Modern Optics,Nankai University,Tianjin Key Laboratory of Micro-scale Optical Information Science and Technology,Tianjin 300350,China)

机构地区：[1]Institute of Modern Optics,Nankai University,Tianjin Key Laboratory of Micro-scale Optical Information Science and Technology,Tianjin 300350,China

出　　处：《Chinese Optics Letters》2023年第11期76-80,共5页中国光学快报（英文版）

基　　金：supported by the National Key Research and Development Program of China(No.2018YFB1801802);the National Natural Science Foundation of China(Nos.61835006 and 62375143)。

摘　　要：Broadband mode converters are essential devices for space-division and wavelength-division multiplexing systems.There are great challenges in the generation of higher-order modes above the third order with low loss and high mode purity employing all-fiber devices.In this paper,an all-fiber LP_(41)mode converter is proposed and fabricated by tapering a nine-core single-mode fiber bundle.Experimental results indicate that this all-fiber LP_(41)mode converter is low-loss,high-purity,and ultrabroadband.The insertion loss is less than 0.4 dB.The purity of odd LP_(41)at 1310 nm is 95.09%,and the operating bandwidth exceeds 280 nm.

关 键 词：photonic lantern mode converter space-division multiplexing 

分 类 号：TN253[电子电信—物理电子学]