Ultra-broadband on-chip twisted light emitter for optical communications  

作　　者：Zhenwei Xie Ting Lei Fan Li Haodong Qiu Zecen Zhang Hong Wang Changjun Min Luping Du Zhaohui Li Xiaocong Yuan 

机构地区：[1]Nanophotonics Research Center,Shenzhen Key Laboratory of Micro-scale Optical Information Technology,Shenzhen University,Shenzhen 518060,China [2]State Key Laboratory of Optoelectronic Materials and Technologies and School of Electronics and Information Technology,Sun Yat-sen University,Guangzhou 510275,China [3]School of Electrical and Electronic Engineering,Nanyang Technological University,Singapore 639798,Singapore

出　　处：《Light(Science & Applications)》2018年第1期1025-1030,共6页光（科学与应用)（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.U1701661,61490712,61525502,61435006,61490715,91750205,11774240,11604218,61601199);the National Key Research and Development Program of China(Grant No.2016YFC0102401);the National Basic Research Program of China(973)(Grant No.2015CB352004);the support given by the leading talents of Guangdong province program no.00201505;the Natural Science Foundation of Guangdong Province,China(No.2016A030312010);the Science and Technology Innovation Commission of Shenzhen under grant Nos.KQTD2015071016560101,KQJSCX20170727100838364,KQJSCX20160226193555889 and ZDSYS201703031605029;the support of the Guangdong Natural Science Foundation No.2017A030313351;Excellent Young Teacher Program No.YQ2014151;the support of the National Research Foundation of Singapore(NRF-CRP12-2013-04)。

摘　　要：On-chip twisted light emitters are essential components of orbital angular momentum(OAM)communication devices1,2.These devices address the growing demand for high-capacity communication systems by providing an additional degree of freedom for wavelength/frequency division multiplexing(WDM/FDM).Although whispering-gallery-mode-enabled OAM emitters have been shown to possess some advantages3–5,such as compactness and phase accuracy,their inherent narrow bandwidths prevent them from being compatible with WDM/FDM techniques.Here,we demonstrate an ultra-broadband multiplexed OAM emitter that utilizes a novel joint path-resonance phase control concept.The emitter has a micron-sized radius and nanometer-sized features.Coaxial OAM beams are emitted across the entire telecommunication band from 1,450 to 1,650 nm.We applied the emitter to an OAM communication with a data rate of 1.2 Tbit/s assisted by 30-channel optical frequency combs(OFCs).The emitter provides a new solution to further increase capacity in the OFC communication scenario.

关 键 词：EMITTER OPTICAL sized 

分 类 号：TN9[电子电信—信息与通信工程]