High efficiency TDM/WDM architectures for seismic reservoir monitoring
2009
Fibre-optic seismic sensor systems for permanent monitoring of oil and gas reservoirs have been under development for
several years. Such systems, which may comprise over 30 000 sensor channels, require an efficient optical multiplexing
architecture. We report test results from a time and wavelength based multiplexing architecture combining up to 256
sensor channels onto a single optical fibre pair, while still allowing low system noise floor and dynamic range over 180
dB.
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