Extinction ratio free phase sensitive optical time domain reflectometry based distributed acoustic sensing system

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United States of America

PATENT NO 11959799
APP PUB NO 20210140814A1
SERIAL NO

17259686

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A phase sensitive optical time domain reflectometry based distributed acoustic sensing system eliminating a degradation in a sensing performance encountered due to a finite extinction ratio of optical elements used to generate optical pulses is provided. A classical Optical Time Domain Reflectometer (OTDR) concept and a phase-OTDR concept are merged to generate an optic pulse for an interrogation with commercially available optic modulators. Characteristics of a light inside a fiber optic cable carry properties of both classical OTDR and phase-OTDR systems. The proposed solution does not require any modifications in a receiver part of the phase-OTDR systems and the proposed solution is used for any type of phase-OTDR system structure.

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Patent Owner(s)

  • ASELSAN ELEKTRONIK SANAYI VE TICARET ANONIM SIRKETI

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Akgun, Toygar Ankara, TR 5 60
Aktas, Metin Ankara, TR 1 2

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