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Related Experiment Video

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Integrated Photoacoustic Ophthalmoscopy and Spectral-domain Optical Coherence Tomography
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Simplified optical correlation-domain reflectometry without reference path.

Makoto Shizuka, Neisei Hayashi, Yosuke Mizuno

    Applied Optics
    |July 14, 2016
    PubMed
    Summary

    This study simplifies optical correlation-domain reflectometry (OCDR) by using the fiber

    Area of Science:

    • Optoelectronics
    • Fiber Optic Sensing
    • Metrology

    Background:

    • Optical correlation-domain reflectometry (OCDR) typically requires an explicit reference path.
    • This adds complexity to the system setup and calibration.

    Purpose of the Study:

    • To develop a simplified OCDR configuration.
    • To eliminate the need for a separate reference path in OCDR systems.

    Main Methods:

    • Utilized Fresnel-reflected light from the distal open end of the sensing fiber as a reference.
    • Demonstrated the fundamental principles of this simplified OCDR approach.
    • Determined the optimal incident power for the system.

    Main Results:

    • Successfully implemented OCDR without an explicit reference path.

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  • Identified an optimal incident power of approximately 8 dBm.
  • Showed that distal end loss should not be applied, contrasting with Brillouin-based OCDR.

    • Conclusions:

    • The simplified OCDR configuration is feasible and effective.
    • This approach offers a more streamlined and potentially cost-effective solution for fiber optic sensing.
    • The findings provide new insights into OCDR system design and optimization.