Multifunctional integration on optical fiber tips: challenges and opportunities  

作　　者：Yifeng Xiong Fei Xu 

机构地区：[1]Nanjing University,College of Engineering and Applied Sciences,Nanjing,China

出　　处：《Advanced Photonics》2020年第6期23-46,共24页先进光子学（英文）

基　　金：This work was sponsored by the National Natural Science Foundation of China(61925502 and 61535005);the National Key R&D Program of China(2017YFA0303700 and 2017YFA0700503);We thank Professor J.H.Chen for help in the preparation of the manuscript.The authors declare no competing interests.

摘　　要：.The flat endface of an optical fiber tip is an emerging light-coupled microscopic platform that combines fiber optics with planar micro-and nanotechnologies.Since different materials and structures are integrated onto the endfaces,optical fiber tip devices have miniature sizes,diverse integrated functions,and low insertion losses,making them suitable for all-optical networks.In recent decades,the increasing demand for multifunctional optical fibers has created opportunities to develop various structures on fiber tips.Meanwhile,the unconventional shape of optical fibers presents challenges involving the adaptation of standard planar micro-and nanostructure preparation strategies for fiber tips.In this context,researchers are committed to exploring and optimizing fiber tip manufacturing techniques,thereby paving the way for future integrated all-fiber devices with multifunctional applications.First,we present a broad overview of current fabrication technologies,classified as“top-down,”“bottom-up,”and“material transfer”methods,for patterning optical fiber tips.Next,we review typical structures integrated on fiber tips and their known and potential applications,categorized with respect to functional structure configurations,including“optical functionalization”and“electrical integration.”Finally,we discuss the prospects for future opportunities involving multifunctional integrated fiber tips.

关 键 词：optical fibers fiber tips optical devices NANOTECHNOLOGY MICRO-OPTICS nano-optics. 

分 类 号：TN253[电子电信—物理电子学]