Analysis of optical pulse coding in spontaneous Brillouin-based distributed temperature sensors
A theoretical and experimental analysis of optical pulse coding techniques applied to distributed optical fiber temperature sensors based on spontaneous Brillouin scattering using the Landau-Placzek ratio (LPR) scheme is presented, quantifying in particular the impact of Simplex coding on stimulated...
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| Veröffentlicht in: | Optics express 2008-11, Vol.16 (23), p.19097-19111 |
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| container_end_page | 19111 |
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| container_issue | 23 |
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| container_title | Optics express |
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| creator | Soto, Marcelo A Bolognini, Gabriele Di Pasquale, Fabrizio |
| description | A theoretical and experimental analysis of optical pulse coding techniques applied to distributed optical fiber temperature sensors based on spontaneous Brillouin scattering using the Landau-Placzek ratio (LPR) scheme is presented, quantifying in particular the impact of Simplex coding on stimulated Brillouin and Raman power thresholds. The signal-to-noise ratio (SNR) enhancement and temperature resolution improvement provided by coding are also characterized. Experimental results confirm that, differently from Raman-based sensors, pulse coding affects the stimulated Brillouin threshold, resulting in lower optimal input power levels; these features allow one to achieve high sensing performance avoiding the use of high peak power pulses. |
| doi_str_mv | 10.1364/oe.16.019097 |
| format | Article |
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The signal-to-noise ratio (SNR) enhancement and temperature resolution improvement provided by coding are also characterized. 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The signal-to-noise ratio (SNR) enhancement and temperature resolution improvement provided by coding are also characterized. 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| source | MEDLINE; DOAJ Directory of Open Access Journals; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals |
| subjects | Computer-Aided Design Equipment Design Equipment Failure Analysis Fiber Optic Technology - instrumentation Refractometry - instrumentation Reproducibility of Results Sensitivity and Specificity Signal Processing, Computer-Assisted - instrumentation Thermography - instrumentation Thermography - methods Thermometers Transducers |
| title | Analysis of optical pulse coding in spontaneous Brillouin-based distributed temperature sensors |
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