Arc-Induced Long-Period Fiber Gratings at INESC TEC. Part I: Fabrication, Characterization and Mechanisms of Formation

In this work, we reviewed the most important achievements of INESC TEC related to the fabrication of long-period fiber gratings using the electric arc technique. We focused on the fabrication setup, the type of fiber used, and the effect of the fabrication parameters on the gratings' transmission spectra. The theory was presented, as well as a discussion on the mechanisms responsible for the formation of the gratings, supported by the measurement of the temperature reached by the fiber during an electric arc discharge.

Automated summary

This work reviews the significant achievements of INESC TEC in fabricating long-period fiber gratings using the electric arc technique, focusing on the fabrication setup, fiber type, and fabrication parameters' effects on the gratings' transmission spectra. The theory and mechanisms responsible for the formation of the gratings are discussed, supported by measurements of the fiber temperature during electric arc discharge.