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

• Type: Article in International Conference Proceedings Book
• Date: 2019

Authors

Viveiros, D (Author) FCUP; Maia, JM (Author) Other; Amorim, VA (Author) Other; Jorge, PAS (Author) FCUP; Marques, PVS (Author) FCUP

Conference proceedings International

Title: FOURTH INTERNATIONAL CONFERENCE ON APPLICATIONS OF OPTICS AND PHOTONICS

4th International Conference on Applications of Optics and Photonics (AOP)

Univ Lisbon, Lisbon, PORTUGAL, MAY 31-JUN 04, 2019

Indexing

ISI Web of Knowledge - 2 Citations

Scopus - 4 Citations

Other information

Authenticus ID: P-00R-8AN

DOI: 10.1117/12.2527261

Abstract (EN): 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 degrees C. The FBG inscribed in the SMF-28e fiber presents thermal stability at temperatures of 800 degrees C and a temperature sensitivity of 14.34 pm/degrees C was determined.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6