Aluminum-coated step index multimode silica fibers CCR 1.06 (High OH)
Aluminum-coated step index multimode optical fibers (Core/Clad Ratio 1.06) have all the benefits of silica-silica fibers. Additional significant improvements include increased mechanical strength and greater fatigue resistance compared to non-hermetic and polymer-clad fibers (PCS). Their transmittance covers a spectral range of 250 to 1200 nm, and also remains stable in corrosive chemicals that normally react to silica glass. The temperature range is from -196C to +400C .

  • Greatly enhanced resistance to high power laser radiation.
  • Higher core-to-clad ratio and enlarged NA optimized for coupling to high-energy lasers.
  • Better fiber cooling due to the heat-conducting metal coating.
  • Excellent mechanical strength and flexibility compared to polymer coated fibers.
  • The metal coating can be soldered and will not outgas.


Aluminum-coated fibers
Index profileStepStepStepStepStep
Core diameter, µm200 ± 4400 ± 8600 ± 12800 ± 151000 ± 20
Clad diameter, µm212 ± 5424 ± 12636 ± 15848 ± 201060 ± 40
Coating diameter, µm260 ± 15530 ± 25830 ± 301060 ± 401350 ± 60
Cladding offset, %< 2
Coating offset, %< 5
Attenuation at 800/1300 nm (High OH)the loss spectrum in the long wavelength region ( > 1um) is higher than that of the materialthe loss spectrum is close to the material loss spectrum
Wavelength range, nm (High OH)250 - 1100250 - 1200
Coating materialAluminium
Core materialPure syntetic silica (High OH)
Clad materialDoped silica
Numerical Aperture (NA)0.22 ± 0.02
Short-term bending radius60 times the fiber diameters
Long-term bending radius120 times the fiber diameters
Proof test, kpsi100
Min operating temperature, C-196
Max operating temperature, C400
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