Optical fiber interferometers fabricated by femtosecond laser direct writing for sensing applications
The fabrication of Mach-Zehnder and Fabry-Pérot interferometers in SMF-28e fibers by femtosecond laser direct writing is demonstrated. The feasibility and effectiveness of this technique in fabricating high-sensitivity fiber optic interferometers is highlighted. TiO<sup>2</sup> coated Mach-Zehnder interferometers exhibit improved refractive index sensitivity compared to uncoated interferometers, while the dual-cavity intrinsic Fabry-Pérot interferometers shows enhanced spectral response and sensitivity for measurement of gas pressure.
Authors
- Duarte Viveiros (ORCID: https://orcid.org/0000-0003-0674-9963)
- Paulo V. S. Marques (ORCID: https://orcid.org/0000-0002-3709-1968)
- João M. Maia (ORCID: https://orcid.org/0000-0001-9260-4247)
- L. Coelho (ORCID: https://orcid.org/0000-0001-6205-9479)
- José M. M. M. de Almeida (ORCID: https://orcid.org/0000-0003-3810-5943)
- Vítor A. Amorim (ORCID: https://orcid.org/0000-0002-2173-2441)
- S. Jorge Pedro A
Institutions
- University of Trás-os-Montes and Alto Douro (PT)
- Universidade do Porto (PT)
- INESC TEC (PT)
Publication Details
- Published
- 2025-05-22
- DOI
- https://doi.org/10.1117/12.3073172
- Primary Topic
- Laser Material Processing Techniques
- Type
- article
- Field-Weighted Citation Impact
- 0.00