1-cm-spatial-resolution brillouin optical time-domain analysis based on bright pulse brillouin gain and complementary code

Y. Mao, N. Guo, K. L. Yu, Hwa Yaw Tam, Chao Lu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

38 Citations (Scopus)


We studied the impact of optical pulse coding techniques on Brillouin optical time-domain analysis (BOTDA) systems experimentally. The results show that complementary-coding-based schemes can provide significant enhanced signal-to-noise ratio (SNR) to the BOTDA system. Using complementary coding, the average time can be reduced significantly and so does the measurement time. The complementary-coded pulses with individual pulse duration of 0.1 ns allowed us to realize temperature sensing over 50 m of single-mode fiber with 1-cm spatial resolution.
Original languageEnglish
Article number6341029
Pages (from-to)2243-2248
Number of pages6
JournalIEEE Photonics Journal
Issue number6
Publication statusPublished - 18 Dec 2012


  • Brillouin gain spectrum
  • optic fiber sensors
  • optical pulse coding
  • time-domain analysis

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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