Distributed sensing using frequency-selective fading
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View abstract on PubMed
Summary
This summary is machine-generated.Fading in optical time-domain reflectometry can be harnessed for distributed sensing. This study uses coherent Rayleigh backscattering fading for high-resolution strain measurements in single-mode fiber.
Area Of Science
- Optics and Photonics
- Fiber Optic Sensing
- Metrology
Background
- Fading in optical time-domain reflectometry (OTDR) typically degrades measurement accuracy.
- Coherent Rayleigh backscattering is a known contributor to this fading phenomenon.
Purpose Of The Study
- To investigate the fading behavior of coherent Rayleigh backscattering.
- To demonstrate the utilization of this fading phenomenon for distributed sensing applications.
Main Methods
- Characterization of coherent Rayleigh backscattering fading.
- Application of dual-pulse phase optical time-domain reflectometry.
- Leveraging the frequency-selective response of fading.
Main Results
- Demonstrated the use of fading for distributed sensing.
- Achieved trace-to-trace strain measurements in single-mode fiber.
- Obtained a strain resolution below 3.3 n<i>ϵ</i>.
Conclusions
- Coherent Rayleigh backscattering fading, often considered detrimental, can be advantageously employed for sensing.
- The proposed method offers a novel approach for high-resolution distributed strain measurement in optical fibers.
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