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Related Experiment Videos

Double-pass rotary mirror array for fast scanning optical delay line.

Linbo Liu1, Nan Guang Chen

  • 1Graduate Programme in Bioengineering, National University of Singapore, Singapore. liulinbo@nus.edu.sg

Applied Optics
|July 11, 2006
PubMed
Summary
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A novel rotary mirror array optical delay line offers fast scanning and extended range for advanced imaging. This system enhances real-time optical coherence tomography and spectroscopic applications.

Area of Science:

  • Photonics and Optical Engineering
  • Biomedical Imaging Technologies

Background:

  • Optical delay lines are crucial components in optical coherence tomography (OCT) and related imaging modalities.
  • Existing delay lines face limitations in scanning speed, range, and signal stability.

Purpose of the Study:

  • To develop a fast-scanning optical delay line with enhanced performance for OCT applications.
  • To improve fiber-optical coupling and minimize amplitude modulation for stable signal acquisition.

Main Methods:

  • Development of a fast scanning optical delay line utilizing a rotary mirror array.
  • Implementation of a double-pass configuration to optimize fiber-optical coupling.
  • Integration of a Michelson interferometer in the reference arm for high delay repeatability.

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Main Results:

  • Achieved an extended scanning range of over 3 mm.
  • Minimized amplitude modulation in the reflected light through optimized coupling.
  • Demonstrated high delay repeatability suitable for demanding imaging tasks.

Conclusions:

  • The developed rotary mirror array optical delay line provides a robust platform for advanced OCT systems.
  • This technology is ideal for real-time optical coherence tomography, optical Doppler tomography, and spectroscopic optical coherence tomography.