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https://hdl.handle.net/10216/104474| Author(s): | Susana Silva Luís Coelho J. M. Almeida Orlando Frazão José Luís Santos F. X. Malcata Martin Becker M. Rothhardt Hartmut Bartelt |
| Title: | H2 sensing based on a Pd-coated tapered-FBG fabricated by DUV femtosecond laser technique |
| Issue Date: | 2013 |
| Abstract: | An optical fiber probe sensor based on a tapered-fiber Bragg grating (FBG) coated with 150-nm-thick Pd film is proposed for hydrogen detection. The FBG was written in a 50-mu m-diameter tapered fiber by deep ultraviolet femtosecond laser technology. A second FBG was inscribed in the 125 mu m-fiber section for temperature compensation. The sensing head was able to detect H-2 concentration in the range 0%-1% (v/v) H-2 at room temperature; a maximum sensitivity of 81.8 pm/%(v/v) H-2 was attained with temperature compensation. The influence of the Pd coating over temperature sensitivity of standard and tapered-FBGs is also presented. |
| Subject: | Engenharia electrotécnica, electrónica e informática Electrical engineering, Electronic engineering, Information engineering |
| Scientific areas: | Ciências da engenharia e tecnologias::Engenharia electrotécnica, electrónica e informática Engineering and technology::Electrical engineering, Electronic engineering, Information engineering |
| DOI: | 10.1109/lpt.2013.2239985 |
| URI: | https://hdl.handle.net/10216/104474 |
| Document Type: | Artigo em Revista Científica Internacional |
| Rights: | restrictedAccess |
| Appears in Collections: | FCUP - Artigo em Revista Científica Internacional FEUP - Artigo em Revista Científica Internacional |
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| File | Description | Size | Format | |
|---|---|---|---|---|
| 96305.pdf Restricted Access | Artigo original publicado | 321.95 kB | Adobe PDF | View/Open |
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