Advances in femtosecond laser direct writing of fiber Bragg gratings in multicore fibers: technology, sensor and laser applications

• 作者: Alexey Wolf Alexander Dostovalov Kirill Bronnikov Mikhail Skvortsov Stefan Wabnitz Sergey Babin
• 来源期刊: 光电进展（英文版）
• 年，卷（期）: 2022,（4）
• 所属期刊栏目: Review
• 页码范围: 48-68
• 页数: 21页
• 语种: 英文
• DOI: 10.29026/oea.2022.210055

摘要

In this article, we review recent advances in the technology of writing fiber Bragg gratings (FBGs) in selected cores of multicore fibers (MCFs) by using femtosecond laser pulses. The writing technology of such a key element as the FBG opens up wide opportunities for the creation of next generation fiber lasers and sensors based on MCFs. The advant-ages of the technology are shown by using the examples of 3D shape sensors, acoustic emission sensors with spatially multiplexed channels, as well as multicore fiber Raman lasers.