Ultrafast Distributed Brillouin Optical Fiber Sensing Based on Optical Chirp Chain

Henan Wang, Dexin Ba, Xuejie Mu, Dengwang Zhou, Yongkang Dong

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


In the past few years, Brillouin-based optical fiber sensors have gained significant ground for distributed temperature and strain measurements in the real world. Among these sensors, the optical chirp chain (OCC) based Brillouin optical fiber sensor is a good candidate to realize ultrafast distributed sensing, which is of great importance to distinguish quick-changing events in practical applications. In this paper, the concept, principle and sensing scheme of OCC are introduced, including the OCC Brillouin optical time-domain analysis and OCC Brillouin optical time-domain reflectometry. In OCC Brillouin optical time-domain analysis, the influence of transient interaction is reflected as three types of spectral distortions, i.e., the back end distortion, the frequency lag of main peak and the frequency saltation distortion, which are verified in the simulation and experiment and attributed to the rapid frequency sweeping. In addition, this paper reviews the OCC based cutting-edge schemes and technologies aspects to upgrade Brillouin sensors with ultra-fast and high-performance sensing capability. In the future, there are still many challenges in OCC based distributed sensing, such as high spatial resolution, real-time demodulation and low-cost scheme.

Original languageEnglish
Article number9381579
JournalIEEE Journal of Selected Topics in Quantum Electronics
Issue number6
StatePublished - 1 Nov 2021
Externally publishedYes

Bibliographical note

Funding Information:
Manuscript received January 25, 2021; revised March 15, 2021; accepted March 16, 2021. Date of publication March 18, 2021; date of current version April 16, 2021. This work was supported in part by National Key Scientific Instrument and Equipment Development Project of China under Grant 2017YFF0108700, National Natural Science Foundation of China under Grant 61975045, and in part by Natural Science Foundation of Heilongjiang Province LH2020F014. (Henan Wang and Dexin Ba contributed equally to this work.) (Corresponding author: Yongkang Dong.) The authors are with the National Key Laboratory of Science and Technology on Tunable Laser, Harbin Institute of Technology, Harbin 150001, China (e-mail: wanghenan1994@126.com; badexin@163.com; hit_muxuejie@163.com; 18088709426@163.com; aldendong@163.com).

Publisher Copyright:
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  • Brillouin optical fiber sensing
  • Brillouin scattering
  • optical chirp chain
  • ultrafast measurement


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