Operation of optical fiber sensors in hydrogen-rich atmosphere
C. Martelli, Federal University of Technology – Paraná (Brazil); A. L. C. Triques, Petrobras Research Center (Brazil); A. Braga, Pontifical Catholic University of Rio de Janeiro (Brazil); J. Canning, K. Cook, University of Sydney (Australia); R. Llerena, V. Takahashi, Pontifical Catholic University of Rio de Janeiro (Brazil)
The application of optical fiber sensors in hydrogen rich atmospheres and temperatures as high as 300 °C is presented and discussed. Two well known optical fiber sensor technologies are evaluated: (1) distributed temperature sensing, based on Raman scattering, and (2) fiber Bragg gratings. Results show that a new generation of gratings and possibly of fibers that are more hydrogen resistant, both optically and mechanically, are needed.
