Abstract
A state-of-the-art review of distributed optical fiber
sensor technologies has been carried out. The studied
methods include polarization-modulation-based, Brillouin-
scattering-based, and frequency-modulated continuous-wave
(FMCW) methods as well as optical coherence domain
reflectometry (OCDR) and interferometric distributed
sensing techniques. A classification of the methods with
their main properties for measuring quantity information
continuously from a long sensor fiber is carried out. The
main emphasis is on the comparison of the methods with
respect to their spatial resolution, measurement time,
and measurement range. The FMCW methods are found to be
the most versatile techniques for various applications,
due to their short measurement times with measurement
ranges extending up to tens of kilometers and location
sensing resolution better than 0.1%. The OCDR methods are
fast and compete with the FMCW methods in versatility,
especially when the measurement range is shorter than 1
to 2 km.
Original language | English |
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Pages (from-to) | 181-189 |
Journal | Optical Engineering |
Volume | 41 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2002 |
MoE publication type | A1 Journal article-refereed |
Keywords
- distributed sensors
- fibre optic sensors
- sensors
- reviews
- Brillouin spectra
- light polarisation
- optical modulation
- light interferometers
- intelligent sensors
- light coherence
- reflectometry