Scholar List Scholar List 100% Heat-and-pull rig for fiber taper fabrication 1 of 1 D58 Heat-and-pull rig for fiber taper fabrication D62 Fabrication and characterization of multimaterial chalcogenide glass fiber tapers with high numerical apertures

Scholar List Scholar List 100% Heat-and-pull rig for fiber taper fabrication 1 of 1 D58 Heat-and-pull rig for fiber taper fabrication D62 Fabrication and characterization of multimaterial chalcogenide glass fiber tapers with high numerical apertures

Citation

Sun, Y., Dai, S., Zhang, P., Wang, X., Xu, Y., Liu, Z., ... & Tao, G. (2015). Fabrication and characterization of multimaterial chalcogenide glass fiber tapers with high numerical apertures. Optics Express, 23(18), 23472.
DOI: 10.1364/OE.23.023472

Keywords

  • Chalcogenide fiber
  • As2Se3
  • As2S3
  • Supercontinuum generation
  • Tapering
  • Numerical aperture
  • Zero-dispersion wavelength 

Brief

Multimaterial chalcogenide fiber tapers with high numerical apertures were fabricated and their ability to generate a supercontinuum was experimentally demonstrated.

Summary

This paper focuses on the fabrication of multimaterial chalcogenide fiber tapers, particularly those comprised of As2Se3 and As2S3, and their application in supercontinuum generation (SCG).

  • The researchers developed a modified one-step coextrusion process to create multimaterial chalcogenide fiber preforms with a consistent core/cladding ratio.
  • These preforms were drawn into multi-mode and single-mode fibers, achieving high numerical apertures (NAs) of approximately 1.45, which is beneficial for light coupling efficiency.
  • The outer diameter of the fibers was tapered down to approximately two microns using a self-developed automatic tapering process.
  • Simulations showed that the zero-dispersion wavelengths (ZDWs), crucial for efficient supercontinuum generation, of the tapers were shorter than 2 μm. This is advantageous as it allows for the use of commercially available short-wavelength infrared lasers for pumping.
  • The researchers experimentally demonstrated SCG in a 15-cm-long multimaterial As2Se3-As2S3 chalcogenide taper with a 1.9 μm core diameter, achieving a supercontinuum spanning from 1.5 μm to longer than 4.8 μm.

This research highlights the potential of these multimaterial chalcogenide fiber tapers for broadband infrared applications.

Origin: https://www.semanticscholar.org/reader/c8e08805c08c0b2afee5f2b774b0e5e0db275c3a

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