Stock Code: 601869.SH / 06869.HK

Distributed Temperature System-multimode Fibre (DTS-MMF)

The distributed temperature system-multimode fibre (DTS-MMF), adopts advanced plasma chemical vapor deposition (PCVD) process which can insure precise waveguide design and smooth graded index profile. Because of the above process advantages and optimized preform parameter, the fibre has excellent optical and geometric properties at long wavelength (1300nm, 1550nm). Additionally, the fibre can resist high temperature by using speical coating material.
Applications
  • Distributed temperature system
Characteristics
  • Low attenuation at DTS operating wavelength 1450nm, 1550nm and 1650 nm
  • High bandwidth at C-band (especially at 1550nm)
  • High temperature resistance
  • Low splicing loss
  • Excellent bending insensitivity
Compared with communication multimode fibre, the advantages of DTS-MMF are as follows:

1. Low attenuation at DTS operating wavelength

  • The lower attenuation of the DTS-MMF at the wavelength of 1450nm, 1550nm and 1650nm can increase the distance of the distributed temperature measurement system

2. High bandwidth at 1550nm

  • According to IEC 60793-1-41-2010 (bandwidth), the actual measured bandwidth at 1550nm of DTS-MMF can exceed more than 1000MHz·km, which effectively improves the spatial resolution of the long-distance distributed temperature measurement system

 

 

Specifications

Fibre Type

GI 62.5/125-27/250DTS GI 50/125-20/250DTS

Part No.

GI2015-B GI2012-B

Optical Properties

Numerical Aperture (NA)

0.275 ± 0.020 0.195 ± 0.020

Loss

@1300nm(dB/km)

≤ 0.60

≤ 0.60

@1450 nm(dB/km)

≤ 0.50

≤ 0.50

@1550 nm(dB/km)

≤ 0.40

≤ 0.40

@1650 nm(dB/km)

≤ 0.50

≤ 0.50

Splicing Loss (dB)

≤ 0.1

≤ 0.1

Bandwidth

@1300 nm(MHz·km)

≥ 200

≥ 200

@1550 nm(MHz·km)

≥ 800 ≥ 500

Geometrical Properties

Fibre Radium (μm)

62.5 ± 2.5 50.0 ± 2.5

Cladding Diameter(μm)

125.0 ± 1.0 125.0 ± 1.0

Fibre Diameter (μm)

245.0 ± 7.0 245.0 ± 7.0
Core/Cladding Concentricity (μm)

≤ 1.5

≤ 1.5

Core Non-circularity (%)

≤ 5.0

≤ 5.0

Cladding Non-circularity (%) ≤ 1.0 ≤ 1.0

Mechanical Properties

Proof Test Level (kpsi)

≥ 100

≥ 100

Environmental Properties

Operating Temperature Range(℃)

-40 to +85/-40 to +150(Optional)

-40 to +85/-40 to +150(Optional)

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