6
Femtosecond Laser-Inscribed Fiber Bragg Gratings for Sensing Applications
Stephen J. Mihailov National Research Council of Canada, Ottawa, ON, Canada
Abstract
This chapter presents the state of the art of femtosecond laser–induced fiber Bragg gratings for sensing applications. It summarizes the laser-material processing mechanisms for dielectric modification with femtosecond pulse duration sources, techniques for grating inscription with said sources, and applications of femtosecond laser–induced gratings in waveguides for strain, temperature, and chemical sensing in harsh environments.
Keywords
Fiber Bragg grating; Fiber optic sensor; Laser-material processing; Nonlinear optics; Ultrafast laser sources
6.1. Introduction
Since their invention in ...
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