多芯光纤光栅写入技术研究进展

Multicore Fibre Gratings Inscription Technology Research Developments

为了进一步增加光纤通信容量,作为空分复用实现方案之一的多芯光纤技术吸引了人们越来越多的研究兴趣。与此同时,基于多芯光纤的各种新型有源、无源光器件也不断涌现。其中,多芯光纤光栅,由于结合了多芯光纤与光纤光栅的独特优势,为新型全光纤器件的设计和应用提供了多种可能,在光纤通信、光纤传感、光纤激光器等领域具有广泛的应用空间。本文分别从多芯光纤选择性刻写和全芯刻写出发,详细介绍了多种基于不同光源、不同写入方式的多芯光纤光栅刻写方案,并结合不同应用场景,分析了不同方案的技术特点。

To improve fiber optic communication capacity,multicore fiber,a space division multiplexing implementation option,has attracted increasing research interest.At the same time,various new active and passive optical devices based on multicore fibers are emerging.Multicore fiber grating,which can combine the unique advantages of multicore fiber and fiber grating,offers a wide range of possibilities for the design and application of new all-fiber devices in various fields,such as fiber optic communication,fiber optic sensing,and fiber lasers.In this paper,multi-core optical fiber inscription is classified as selective inscription and full-core inscription.Various multicore fiber grating inscription schemes based on different light sources and different inscription methods are introduced.The technical characteristics of the different schemes are analysed relative to different application scenarios.