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Updated: Jun 13, 2026

Fabrication and Characterization of Disordered Polymer Optical Fibers for Transverse Anderson Localization of Light
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Highly birefringent optical microfibers.

Haifeng Xuan1, Jian Ju, Wei Jin

  • 1Department of Electrical Engineering, The Hong Kong Polytechnic University, Hong Kong.

Optics Express
|April 15, 2010
PubMed
Summary
This summary is machine-generated.

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Highly birefringent (Hi-Bi) air-clad microfibers (MFs) achieve high birefringence using femtosecond laser processing. These MFs are suitable for nanoscale polarization maintaining transmission and interferometric sensors.

Area of Science:

  • Photonics
  • Optical Fiber Technology
  • Materials Science

Background:

  • Standard single-mode fibers (SMF-28) are modified to create microfibers (MFs).
  • Femtosecond laser processing is used to precisely remove parts of the silica cladding.
  • This modification results in MFs with approximately elliptical cross-sections and air cladding.

Purpose of the Study:

  • To theoretically and experimentally investigate highly birefringent (Hi-Bi) air-clad silica microfibers (MFs).
  • To explore the potential of these MFs for applications requiring precise polarization control.
  • To achieve wavelength and sub-wavelength scale transverse dimensions in MFs.

Main Methods:

  • Theoretical modeling using a three-layer approximation (Ge-doped core, elliptical silica cladding, air cladding).

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Last Updated: Jun 13, 2026

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  • Experimental fabrication of Hi-Bi MFs by taper-drawing pre-processed standard single-mode fibers.
  • Characterization of MFs with a major diameter of 0.9 microm and a minor/major diameter ratio of 0.9.

    • Main Results:

    • Theoretical modeling predicted phase and group birefringence of the order 10⁻².
    • Experimental results demonstrated a group birefringence of approximately 0.015.
    • The experimental findings showed good agreement with theoretical predictions.

    Conclusions:

    • Air-clad Hi-Bi MFs can achieve high levels of birefringence (order 10⁻²).
    • These MFs are effective for micron/nanoscale polarization maintaining transmission.
    • The developed MFs are suitable for phase-sensitive interferometric sensors.