Copper-coated gradient index multimode optical fibers

High strength metal-coated silica fibers

Copper-coated gradient index multimode optical fibers have increased mechanical strength and greater fatigue resistance compared to non-hermetic and polymer-clad fibers (PCS). Their transmittance covers a spectral range of 1000 to 1600 nm, and also remains stable in corrosive chemicals that normally react to silica glass. The temperature range is from -196C to +600C . Hermetically metal-coated optical fibers are the optimum candidate when used in high vacuum and harsh environmental conditions

 

FEUTURES:

  •  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.

 

Fiber Specifications:

Copper-coated gradient index multimode silica fibers -50/125Cu-Gr -50/200Cu-Gr -100/140Cu-Gr
Fiber type Multimode Multimode Multimode
Index profile Gradient Gradient Gradient
Core diameter,  µm 50 ± 2.5 50 ± 2.5 100 ± 2 
Clad diameter, µm
125 ± 3
200 ± 3
140 ± 2
Coating diameter,  µm 160 ± 10 250 ± 10 ~ 210 ± 10
Cladding offset, % < 3
Coating offset, % < 5
Attenuation at 850/1300 nm1, dB/km ~ 13 ~ 5 ~ 15
Wavelength range, nm 1000 - 1600 
Coating material Copper 99,99%
Core material Silica Ge-doped
Clad material Pure silica
Additional inner layer Carbon
Numerical Aperture (NA) 0.2 ± 0.02
Short-term bending radius 60 times the fiber diameters
Long-term bending radius 120 times the fiber diameters
Proof test, kpsi 100
Min operating temperature 2,3, C -196
Max operating temperature (short time < 60s)2, C 600
Max operating temperature (long time 60s)2, C < 400
Permissible rate of temperature change in the temperature range, C/min 5

1- under normal climatic conditions

2- in inert environment

3- at the minimum operating temperature, the integrity of the optical fiber is guaranteed

Copper-coated gradient index multimode optical fibers