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The authors experimentally demonstrate the operation of a lasing phase-sensitive optical time-domain reflectometer (Φ-OTDR) based on random feedback from a sensing fiber. Here, the full output of the laser provides… Click to show full abstract
The authors experimentally demonstrate the operation of a lasing phase-sensitive optical time-domain reflectometer (Φ-OTDR) based on random feedback from a sensing fiber. Here, the full output of the laser provides the sensing signal, in contrast to the small backscattered signal measured in a conventional OTDR. In this proof-of-principle demonstration, the laser operates as a distributed vibration sensor with signal-to-noise ratio of 23-dB and 1.37-m spatial resolution.
Keywords:
lasing phase;
phase sensitive;
vibration sensor;
distributed vibration;
otdr
Journal Title: Optics express
Year Published: 2022
Link to full text (if available)
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Journal Title: Optics express
Year Published: 2022
Link to full text (if available)
Share on Social Media: Sign Up to like & get
recommendations!