2018
DOI: 10.1109/jlt.2017.2766765
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Performance Improvement of Brillouin Ring Laser Based BOTDR System Employing a Wavelength Diversity Technique

Abstract: This document may differ from the final, published version of the research and has been made available online in accordance with publisher policies. To read and/or cite from the published version of the research, please visit the publisher's website (a subscription may be required.) 1 Considering the input pump power limitation and the complexity of the receiver bandwidth reduction, a novel wavelength diversity technique is employed together with a BRL in a conventional BOTDR system. The proposed system Abstra… Show more

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Cited by 30 publications
(14 citation statements)
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“…To improve the flexibility of the dynamic sensing system, single-end-access measurement techniques are desired to be proposed [63]; (3) for SpBS-based sensors, the measurement accuracy is relatively poor due to the low system SNR, which restricts its applications in real-world environments. Therefore, new techniques and concepts are in demand to improve the SNR of the sensing systems [64,65].…”
Section: Discussionmentioning
confidence: 99%
“…To improve the flexibility of the dynamic sensing system, single-end-access measurement techniques are desired to be proposed [63]; (3) for SpBS-based sensors, the measurement accuracy is relatively poor due to the low system SNR, which restricts its applications in real-world environments. Therefore, new techniques and concepts are in demand to improve the SNR of the sensing systems [64,65].…”
Section: Discussionmentioning
confidence: 99%
“…The proposed system can be further exploited into DWDM and CWDM based communication system to improve the system performance in terms of larger bandwidth/higher data rate [15]. Furthermore, the BOTDR sensor system can be integrated with other emerging techniques, such as Raman amplification, pump pulse coding and wavelength diversity techniques [19] for further improvement in sensor system performance.…”
Section: Discussionmentioning
confidence: 99%
“…Then, they embedded a Brillouin fiber laser (BFL) into the BOTDR system as local oscillator to reduce the receiver bandwidth in the order of a few MHz. Using the proposed techniques above, they eventually obtained 5.1 dB SNRI over a 50 km sensing fiber with a spatial resolution of 5 m, which was equivalent to a 180% improvement compared with the conventional BOTDR system [51]. In 2018, Zhang et al theoretically analyzed the channel capacity of WDM-based BOTDRs in detail by considering the fiber dispersion and nonlinear effects in sensing fibers.…”
Section: Performance Improvement Of Botdrsmentioning
confidence: 99%
“…To avoid having to use such wide-bandwidth DAQ, various schemes have been proposed in BOTDR to reduce electronic bandwidth. It was previously reported that the Brillouin fiber laser (BFL) can be treated as the local reference light in traditional heterodyne-detection BOTDR to reduce the electronic bandwidth request of DAQ from ~11 GHz to hundreds of MHz [51,96,117]. However, the traditional BFL suffered from the very large volume due to the essential reference fiber with the length of a few or tens of kilometers.…”
Section: Performance Improvement Of Botdrsmentioning
confidence: 99%