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MM Fibers

 

Graded Index Multimode Fiber

  • Overview
  • Specification
  • Downloads
  • High bandwidth
  • Carbon coating options for reduced hydrogen sensitivity
  • High temperature coatings for 150°C and 300°C
  • 50μm and 125μm variants

Typical Applications

  • DTS
  • Telemetry
  • Downhole monitoring

Product Variants

GIMM(50/125)

Graded index, germanium doped multimode fiber with a 50µm core and 125µm cladding

GIMM(62.5/125)

Graded index, germanium doped multimode fiber with a 62.5µm core and 125µm cladding

Product Variants

GIMM(50/125)

Graded index, germanium doped multimode fiber with a 50µm core and 125µm cladding

 

GIMM(50/125)

Operating Wavelength (nm)

600 - 1750

Numerical Aperture

0.18 - 0.22

Attenuation (dB/km)

@850nm

@1310nm

High Temperature (HT)

≤3.2

≤1.0

Carbon High Temperature (CHT)

≤3.2

≤1.0

Polyimide (P)

≤4.0

≤2.0

Carbon Polyimide (CP)

≤4.0

≤2.0

Proof Test (%)

1 or 2 (100 or 200 kpsi)

Bandwidth (MHz.km)

400/400 @850/1300nm

Cladding Diameter (μm)

HT & P: 125 ± 1

CP & CHT: 125 ± 2

Core Cladding Concentricity (μm)

≤2.0

Coating Diameter (μm)

HT & CHT: 245 ± 15

P & CP: 155 ± 5

Core Diameter (µm) (nominal)

50

Coating Type

HT, P, CHT & CP

Operating Temperature (°C)

HT & CHT: -55 to +150

P & CP: -55 to +300 

 

Coating Order Guide
Dual Layer Acrylate = No order code
Polyimide = P
Carbon = C
Carbon High Temperature = CHT
Carbon Polyimide = CP


Order Code Example
SM1250SC(9/125) witha Carbon High Temperature coating: SM1250SC(9/125)CHT

GIMM(62.5/125)

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