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Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
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Efficient dispersion modeling in optical multimode fiber.

Szu-Yu Lee1,2, Vicente J Parot1,3, Brett E Bouma1,2,4

  • 1Harvard Medical School and Massachusetts General Hospital, Wellman Center for Photomedicine, Boston, MA, 02114, USA.

Light, Science & Applications
|January 31, 2023
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Summary
This summary is machine-generated.

A new parametric dispersion model simplifies characterizing wavelength-dependent transmission in optical multimode fibers (MMF). This approach accurately predicts the fiber

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Area of Science:

  • Optical Engineering
  • Photonics
  • Telecommunications

Background:

  • Wavelength-dependent transmission in optical multimode fibers (MMF) presents significant characterization challenges.
  • Beyond a narrow spectral correlation width, transmitted fields change unpredictably with wavelength.

Purpose of the Study:

  • To develop a parametric dispersion model for describing mode mixing in MMF.
  • To extend the concept of principal modes for spectrally resolved transmission matrix (TM) characterization.
  • To enable efficient and accurate reconstruction of the multispectral TM of MMF.

Main Methods:

  • A parametric dispersion model is proposed, treating mode mixing as an exponential map.
  • Computational methods are developed to fit the model using sparse spectral measurements.
  • The model is validated across diverse MMF types.

Main Results:

  • Accurate estimation of the full transmission matrix (TM) across broad spectral bandwidths is achieved.
  • The model's predictive capability exceeds the original spectral correlation width by over two orders of magnitude.
  • The spectral behavior of principal modes can be conveniently studied.

Conclusions:

  • The developed parametric dispersion model effectively characterizes spectrally resolved transmission in MMF.
  • The model obviates the need for dense spectral measurements, enabling efficient TM reconstruction.
  • This approach significantly advances the understanding and application of MMF in optical systems.