Li Rongwei, Liu Jianfu, Yang Zhi, et al. Advances in the research on distributed optical fiber temperature and strain sensing[J]. 2010,(3):44-47. DOI: 10.13756/j.gtxyj.2010.03.020.
In view of the current situation of distributed optical fiber sensing technology
two kinds of optical temperature and strain sensing technologies
based respectively on coherent optical time-domain reflection and double-pulse Brillouin optical time-domain reflection
are introduced in this paper.They have such advantages as high measurement precision and high spatial resolution and can be widely used in the fields of national defense and scientific research.Their systematic schemes and measurement principles are analyzed in detail
their key techniques and innovations pointed out and the trend of development of the distributed optical fiber sensing technology discussed.