Reliability analysis and comparison of demodulation methods for Raman distributed temperature sensor

Liu, Sha; Chang, Jun; Zhang, S. S.; Wang, Z. L.; Jiang, Shuo; Sun, Bo; Jia, Chuanwu; Wang, F. P.

doi:10.1007/s11082-014-0008-y

Cited by 4 publications

(1 citation statement)

References 13 publications

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“…Subsequently, he won the Nobel Prize in physics for Raman scattering in 1930. Since then, the phenomenon of Raman scattering has been extensively and deeply studied, and many new Raman scattering effects have been discovered, such as spontaneous Raman scattering 38 , stimulated Raman scattering 39 , 40 and resonance Raman scattering 41 . Currently, the Raman effect is widely applied in various disciplines, including physics, medicine, chemistry and biology 28 – 36 , 42 – 44 .…”

Section: Introductionmentioning

confidence: 99%

Physics and applications of Raman distributed optical fiber sensing

Zhang

2022

Light Sci Appl

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Raman distributed optical fiber sensing has been demonstrated to be a mature and versatile scheme that presents great flexibility and effectivity for the distributed temperature measurement of a wide range of engineering applications over other established techniques. The past decades have witnessed its rapid development and extensive applicability ranging from scientific researches to industrial manufacturing. However, there are four theoretical or technical bottlenecks in traditional Raman distributed optical fiber sensing: (i) The difference in the Raman optical attenuation, a low signal-to-noise ratio (SNR) of the system and the fixed error of the Raman demodulation equation restrict the temperature measurement accuracy of the system. {ii) The sensing distance and spatial resolution cannot be reconciled. (iii) There is a contradiction between the SNR and measurement time of the system. (iv) Raman distributed optical fiber sensing cannot perform dual-parameter detection. Based on the above theoretical and technical bottlenecks, advances in performance enhancements and typical applications of Raman distributed optical fiber sensing are reviewed in this paper. Integration of this optical system technology with knowledge based, that is, demodulation technology etc. can further the performance and accuracy of these systems.

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