Fabrication of periodic structures in optical fibers by femtosecond laser micromachining for sensing applications

Duarte Viveiros; João Maia; Vítor A. Amorim; Pedro A. S. Jorge; P. V. S. Marques

doi:10.1117/12.2527261

3 October 2019 Fabrication of periodic structures in optical fibers by femtosecond laser micromachining for sensing applications

Duarte Viveiros, João Maia, Vítor A. Amorim, Pedro A. S. Jorge, P. V. S. Marques

Author Affiliations +

Proceedings Volume 11207, Fourth International Conference on Applications of Optics and Photonics; 112070W (2019) https://doi.org/10.1117/12.2527261
Event: IV International Conference on Applications of Optics and Photonics (AOP 2019), 2019, Lisbon, Portugal

Abstract

A femtosecond laser direct writing system was developed to explore the fabrication of periodic structures in optical fibers. The possibility to write type I first- and second-order Bragg gratings in the same single-mode fiber (SMF-28e), with reflectivities of 99.6 % and 59.3 %, respectively, is presented. The fabrication of structures (waveguides and grating) in a coreless and in a SMF-28e fiber was first demonstrated, and the gratings were then exposed to a thermal annealing up to 1000°C. The FBG inscribed in the SMF-28e fiber presents thermal stability at temperatures of 800 °C and a temperature sensitivity of 14.34 pm/°C was determined.

Citation Download Citation

Duarte Viveiros, João Maia, Vítor A. Amorim, Pedro A. S. Jorge, and P. V. S. Marques "Fabrication of periodic structures in optical fibers by femtosecond laser micromachining for sensing applications", Proc. SPIE 11207, Fourth International Conference on Applications of Optics and Photonics, 112070W (3 October 2019); https://doi.org/10.1117/12.2527261

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