Al-Coated Silica Fibers

Main features:

  • Working temperatures from -270°C to 400°C
  • Excellent mechanical strength and flexibility
  • Capable to be used under high vacuum conditions without outgassing
  • X-Ray resistant
  • Sterilized using ETO, steam, e-beam or gamma radiation
  • Thin metal coating and NA optimized for coupling to high energy lasers
  • Capable to be soldered into ferrules without glue
  • Fiber cooling due to the heat-conducting metal coating
  • Possibility of soldering, embedded fibers, bundles, pigtails, inlets to high vacuum

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art photonics’ Aluminum Coated Silica Fibers (Brand Name FlexiRay® MCS-A) are the optimal solution for the use under harsh environmental conditions, i.e. high temperature, vacuum, or corrosive chemicals. In addition to all the benefits of silica-silica fibers, hermetically sealed FlexiRay® MCS-A possess increased mechanical strength and greater fatigue resistance compared to non-hermetic polymer-clad fibers. Important, transmission of FlexiRay® MCS-A covers a spectral range of 200 to 2400 nm depending on the chosen UV- or NIR-silica fiber core.

Specification of Cu-alloy coated Fibers
Coating materialAl
Core/ Cladding material Step Index Pure Fused Silica Core / Fluorine Doped Silica Cladding
Graded IndexGermanium Doped Fused Silica Core / Pure Fused Silica
Standard fiber core diameters, μm9; 50; 62.5; 200; 400; 600; 1000
Al coating thickness, μm15 – 150
Standard Numerical Aperture (NA)0.22 ± 0.02
Available Numerical Aperture (NA)0.12 ± 0.02
0.26 ± 0.02
Min operating temperature, °C-270
Max operating temperature, °C+400
Humidity RangeUp to 100%
Minimal bending radius (long term)200 x fiber outer diameter
Minimal bending radius (short term)100 x fiber outer diameter
Tensile strength (short gauge), GPa3.5 – 6
Two point bending strength, GPa>10
Static fatigue parameter>100
  • High temperature environments
  • Harsh Chemical environments
  • Nuclear radiation resistant devices
  • Down-hole sensing for oil and gas industry
  • High Power Laser delivery
  • Medical applications
  • Soldered fiber bundles