Advances in femtosecond laser direct writing of fiber Bragg gratings in multicore fibers: technology, sensor and laser applications
Alexey A. Wolf, А. В. Достовалов, Kirill Bronnikov, M. N. Skvortsov, S. Wabnitz, Sergey A. Babin
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.
Topics & Concepts
FemtosecondFiber Bragg gratingMaterials sciencePHOSFOSLaserFiber laserOptoelectronicsOptical fiberMulti-core processorOpticsCore (optical fiber)Photonic-crystal fiberFiberFiber optic sensorPlastic optical fiberComputer scienceWavelengthComposite materialPhysicsOperating systemAdvanced Fiber Optic SensorsAdvanced Fiber Laser TechnologiesPhotonic Crystal and Fiber Optics