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- Distributed temperature system
DTS Multi-mode Fibre
The YOFC distributed temperature system-multimode fibre (DTS-MMF) is manufactured
using the advanced PCVD process, featuring accurate control of the refractive index
profile, perfect implementation of a preset waveguide structure, and parabolic graded-
index distribution. The optimized profile design and process control ensure that the
optical fibre exhibits excellent optical and geometrical characteristics across long
wavelengths (1,300 nm and 1,550 nm). With special coating materials and processes, the
optical fibre demonstrates high temperature resistance.
Details
Specification
Documents
Applications
Characteristics
- Low attenuation at DTS operating wavelengths (1,450 nm, 1,550 nm, and 1,650 nm)
- High bandwidth in the C-band (especially at 1,550 nm)
- High temperature resistance
- Low splicing los
- Excellent bending insensitivity
Compared to the Communication Multi-mode Fibre, the DTS-MMF has the Following Advantages:
1. Low attenuation at DTS operating wavelength
With optimized attenuation at 1,450 nm, 1,550 nm, and 1,650 nm, the YOFC DTS-MMF is suitable for
longer-distance temperature measurement systems.
2. High bandwidth at 1,550 nm
According to IEC 60793-1-41-2010 (bandwidth), with improved bandwidth test equipment, the measured
bandwidth of the YOFC DTS-MMF at 1,550 nm can reach more than 1,000 MHz•km, effectively improving the
spatial resolution of long-distance distributed temperature measurement systems.
Specifications
| Fibre type | GI62.5/125-27/250DTS | GI50/125-20/250DTS | |
|---|---|---|---|
| Part No. | GI2015-B | GI2012-B | |
| Optical properties | |||
| NA | 0.275±0.020 | 0.195±0.020 | |
| Loss | @1300nm (dB/km) | ≤0.60 | ≤0.60 |
| @1450nm (dB/km) | ≤0.50 | ≤0.50 | |
| @1550nm (dB/km) | ≤0.40 | ≤0.40 | |
| @1650nm (dB/km) | ≤0.50 | ≤0.50 | |
| Splicing loss (dB) | ≤0.1 | ≤0.1 | |
| Bandwidth | @1300nm (MHz·km) | ≥200 | ≥200 |
| @1550nm (MHz·km) | ≥800 | ≥500 | |
| Geometrical properties | |||
| Core diameter of optical fibre (μm) | 62.5±2.0 | 50.0±2.0 | |
| Cladding diameter (μm) | 125.0±1.0 | 125.0±1.0 | |
| Outer diameter of optical fibre (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 (°C) | -40 ~ 85 | -40 ~ 85 | |
Brochure
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