A calibrated 27-km distributed fiber temperature sensor based on microwave heterodyne detection of spontaneous Brillouin backscattered power
| Autor: | S.M. Maughan, H.H. Kee, T.P. Newson |
|---|---|
| Rok vydání: | 2001 |
| Předmět: |
Observational error
Materials science Backscatter business.industry Temperature measurement Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Brillouin zone Optics Brillouin scattering Heterodyne detection Electrical and Electronic Engineering business Optical filter Microwave |
| Zdroj: | IEEE Photonics Technology Letters. 13:511-513 |
| ISSN: | 1941-0174 1041-1135 |
| DOI: | 10.1109/68.920769 |
| Popis: | Single-ended distributed fiber temperature measurements using the novel technique of microwave (11 GHz) coherent detection of spontaneous Brillouin backscattered power are presented. Anti-Stokes power traces mere obtained for a sensing length of 27.4 km, believed to be the longest yet demonstrated for such spontaneous power measurements. The power dependence on temperature was measured as 0.36/spl plusmn/0.04%/K, and the rms temperature error was less than 3.5 K at the far end of the sensing fiber. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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