Year
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(Peer-Reviewed) Advances in femtosecond laser direct writing of fiber Bragg gratings in multicore fibers: technology, sensor and laser applications
Alexey Wolf ¹ ², Alexander Dostovalov ¹ ², Kirill Bronnikov ¹ ², Mikhail Skvortsov ¹ ², Stefan Wabnitz ¹ ³, Sergey Babin ¹ ²
¹ Novosibirsk State University, Novosibirsk 630090, Russia
² Institute of Automation and Electrometry of the SB RAS, Novosibirsk 630090, Russia
³ Department of Information, Electronics and Telecommunications Engineering, Sapienza University of Rome, Rome 00184, Italy
Opto-Electronic Advances, 2022-04-25
Abstract

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 advantages 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.
Advances in femtosecond laser direct writing of fiber Bragg gratings in multicore fibers: technology, sensor and laser applications_1
Advances in femtosecond laser direct writing of fiber Bragg gratings in multicore fibers: technology, sensor and laser applications_2
Advances in femtosecond laser direct writing of fiber Bragg gratings in multicore fibers: technology, sensor and laser applications_3
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