Posted in | Optical Fiber

ArmD™ NCC UV/WF Silica Non Circular Core Fiber

ArmadilloSIA® non-circular core silica optical fibers display similar outstanding performance and transmission as ArmD™ UV/WF fibers. Low focal ratio degradation and good image scrambling make it perfect for astronomy applications.

ArmD™ NCC UV/WF Silica Non Circular Core Fiber

Image Credit: Armadillo SIA

When used with diode lasers, which offer a square-shaped output, the square core fibers provide higher coupling efficiencies than circular fibers.

In laser applications like surface pre-treatment, it is possible to process the material in a uniform way compared to what is possible with a circular beam due to less overlapping. The square output beam decreases the requirement for beam shaping optics.

Three types of standard radii are available for a square shape: r4<10%, 10%<r4<20%, r4 >20%.


  • Broad UV/VIS/NIR spectral range
  • ArmD™ WF: 300 to 2400 nm
  • ArmD™ UV: 190 to 1200 nm
  • Broad temperature range (−190 °C to 350 °C)
  • High laser damage resistance provided
  • Comes with various core geometries; for example, square, octagonal, rectangular, etc.
  • Homogeneous power distribution
  • Image scrambling characteristics is outstanding
  • Manufactured at ISO 9001-compliant facilities
  • Materials are biocompatible
  • Excellent focal ratio degradation characteristics
  • Sterilizable by ETO and other techniques

Physical Properties:

  • Step index profile
  • ArmD™ WF: low OH-content <1 ppm
  • Pure synthetic fused silica core

Available NA:

  • Low NA: 0.16 ± 0.02
  • High NA: 0.28 ± 0.02
  • Standard NA: 0.22 ± 0.02

Standard Prooftest:

  • 100 kpsi (Nylon, ETFE, Acrylate jackets)
  • 70 kpsi (Polyimide jacket)

Minimum Bend Radius:

  • 150 × clad diameter (long term)
  • 50 × clad diameter (momentary)


Image Credit: Armadillo SIA

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