Description
In OMC’s 2C 2.5mm Central Loose Tube indoor&Outdoor cable withno Jelly, single-mode/multimode fibers are positioned in the loose tube, which is made of PBT materials and filled with water Blocking Yarn. The loose tube is covered with Aramid Yarn and LSZH materials jacket to guarantee the compactness and longitudinal water-blocking performance.
Standard color of fiber and tube
The color code of the individual fibers, shall be in accordance with the table as below:
| No. | 1 | 2 |
| Color | Blue | Orange |
Cable Structure parameter
| Item | Contents | Unit | Value |
| Fiber type | / | / | G657A2 |
| Fiber count | Number | / | 2 |
| Fiber color | Number | / | Blue, orange |
| Strength member | / | / | aramid fiber |
| Inner jacket | Diameter | mm | 1.5±0.1 |
| Material | / | PBT | |
| Color | / | nature | |
| Outer sheath | Material | / | LSZH |
| Color | / | white | |
| Attenuation | dB/km | / | ≦ 0.4 at 1310nm, ≦ 0.3 at 1550nm |
| Cable diameter | / | mm | 2.5±0.2 |
| Cable weight | ±10% | kg/km | 7.5 |
Mechanical & Environmental Performance
| Item | Contents | Value |
| Max. tensile load | Short term | 50N fiber strain≤0.6% |
| Long term | 20N | |
| Max. crush resistance | Short term | 500N/100mm |
| Long term | 100N/100mm | |
| Min. bending radius | Installation | 20 x cable diameter |
| Operation | 10 x cable diameter | |
| Temperature range | Operation | -40℃ ~ +70℃ |
| Installation | -20℃ ~ +60℃ | |
| Storage/transportation | -40℃ ~ +70℃ |
Optical fiber technical parameters
| Fiber style | Unit | SM 9/125 | MM 50/125 | MM 62.5/125 | |
| Condition | nm | 1310/1550 | 850/1300 | 850/1300 | |
| Attenuation | dB/km | ≤0.34/0.2 | ≤3.0/1.0 | ≤3.0/1.0 | |
| Dispersion | 1310nm | Ps/(nm*km) | ≤18 | ….. | ….. |
| 1550nm | Ps/(nm*km) | ≤22 | ….. | ….. | |
| Bandwidth | 850nm | MHZ. KM | ….. | ≧400 | ≧160 |
| 1300nm | MHZ. KM | ….. | ≧800 | ≧500 | |
| Zero dispersion wavelength | nm | ≧1302,
≤1322 |
….. | ….. | |
| Zero dispersion slope | nm | ≤0.091 | ….. | ….. | |
| PMD Maximum Individual Fiber | ≤0.2 | ….. | ….. | ||
| PMD Design Link Value | Ps(nm2*km) | ≤0.08 | ….. | ….. | |
| Fiber cutoff wavelength λc | nm | ≧1180,
≤1330 |
….. | ….. | |
| Cable cutoff wavelength λcc | nm | ≤1260 | ….. | ….. | |
| MFD | 1310nm | um | 8.6 ± 0.4 | ….. | ….. |
| 1550nm | um | 9.6 ± 0.5 | ….. | ….. | |
| Numerical Aperture(NA) | …… | 0.200±0.015 | 0.275±0.015 | ||
| Step(mean of bidirectional measurement) | dB | ≤0.05 | ≤0.10 | ≤0.10 | |
| Irregularities over fiber length and point discontinuity | dB | ≤0.05 | ≤0.10 | ≤0.10 | |
| Difference backscatter coefficient | dB/km | ≤0.03 | ≤0.08 | ≤0.10 | |
| Attenuation uniformity | dB/km | ≤0.01 | ……. | ……. | |
| Core diameter | um | …… | 50±1.0 | 62.5±2.5 | |
| Cladding diameter | um | 125.0±0.1 | 125.0±0.1 | 125.0±0.1 | |
| Cladding non-circularity | % | ≤1.0 | ≤1.0 | ≤1.0 | |
| Coating diameter | um | 242±7 | 242±7 | 242±7 | |
| Coating/chaffinch concentrically error | um | ≤12.0 | ≤12.0 | ≤12.0 | |
| Coating non circularity | % | ≤6.0 | ≤6.0 | ≤6.0 | |
| Core/cladding concentricity error | um | ≤0.6 | ≤1.5 | ≤1.5 | |
| Curl(radius) | um | ≤4 | ….. | ….. | |
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