Browsing by Keywords "Rayleigh scattering"

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A direct detection fiber optic distributed acoustic sensor with a mean SNR of 7.3 dB at 102.7 km

Uyar, Faruk; Onat, Talha; Ünal, Canberk; Kartaloğlu, Tolga; Özbay, Ekmel; Özdür, İ. (Institute of Electrical and Electronics Engineers Inc., 2019)

In this work, we present the experimental results of a direct detection π-OTDR based distributed acoustic sensor system. The system uses two cascaded acousto-optic modulators in order to generate optical pulses with very ...
Field test and fading measurement of a distributed acoustic sensor system over a 50 km-long fiber

Uyar, Faruk; Kartaloğlu, Tolga; Özdür, Ibrahim; Özbay, Ekmel (SPIE - International Society for Optical Engineering, 2018)

In this study, we present a direct detection distributed acoustic sensor based on phase-sensitive optical time domain reflectometer (φ-OTDR) with long sensing range and high signal-to-noise ratio (SNR), which is field-tested ...