Abstract
A phase sensitive optical time domain reflectometry sensing scheme employing a
two-stage nonlinear optical preamplification system is proposed to
reduce the blind spot effect in Rayleigh scattering by improving the
optical power distribution and to enhance the resolution at locations
of low-backscatter intensity measurements, providing a higher
signal-to-noise ratio for distributed acoustic measurements; the
developed system has been tested in-laboratory and on in-field
monitoring of a survey well in Cottessen, The Netherlands. The
characterization shows strain noise levels below 1 nɛ for a
10 kHz sampling rate.
Funder
H2020 Fast Track to Innovation
Subject
Atomic and Molecular Physics, and Optics,Engineering (miscellaneous),Electrical and Electronic Engineering
Cited by
3 articles.
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