Fibra ottica
Fibra monomodale insensibile alla curvatura
G.657.A1
ITU-T G.657.A1 · raggio di curvatura 10 mm · compatibile G.652.D
Mantiene tutte le caratteristiche della fibra G.652.D standard (stessa giunzione, stesse misure) tollerando un raggio di curvatura di 10 mm. Pensata per le montanti FTTH e gli ingressi negli edifici con percorsi stretti.
Qualità e conformità
G.657.A1
Norme e certificazioni
Punti di forza qualitativi
- Attenuation @ 1310 nm: ≤ 0.34 dB/km
- Attenuation @ 1550 nm: ≤ 0.20 dB/km
- Macrobend (R = 10 mm, 1 turn, 1550 nm): ≤ 0.75 dB
- Macrobend (R = 15 mm, 10 turns, 1550 nm): ≤ 0.25 dB
- Proof test: ≥ 100 kpsi (0.69 GPa)
Specifiche tecniche
G.657.A1
| Attenuation @ 1310 nm | ≤ 0.34 dB/km |
|---|---|
| Attenuation @ 1550 nm | ≤ 0.20 dB/km |
| Macrobend (R = 10 mm, 1 turn, 1550 nm) | ≤ 0.75 dB |
| Macrobend (R = 15 mm, 10 turns, 1550 nm) | ≤ 0.25 dB |
| Cable cut-off wavelength λcc | ≤ 1260 nm |
| Mode field diameter @ 1310 nm | 8.8 ± 0.4 µm |
|---|---|
| Cladding diameter | 125.0 ± 0.7 µm |
| Coating diameter | 242 ± 5 µm |
| Proof test | ≥ 100 kpsi (0.69 GPa) |
|---|---|
| Operating temperature | -60 °C ~ +85 °C |
| Standards | ITU-T G.657.A1, IEC 60793-2-50 type B6_a1 |
Bending-loss insensitive single-mode optical fiber is superior to standards of ITU-T Recommendation G.652D/G.657A and IEC International Standard 60973-2-50 B1.3.
The optical fiber perform is manufactured via the advanced VAD process. Due to the advantages of the fiber drawing process and the adopted VAD performs, G.657A1 optical fiber shows perfect refractive index profile，excellent geometrical performance, low bending loss etc.
It completely overcomes the attenuation of water peak at 1383 nm and could operate over the entire waveband from 1260 nm to 1625 nm.
Excellent bending performance, applicable to occasion with special requirement of bending radius.
Completely compatible with existing G.652D.
Accurate geometrical parameter ensures low splicing loss and high splicing
performance.
Excellent PMD performance supports high-speed and long repeater spacing transmission system.
| Characteristics | Conditions | Specified Value | Units |
|---|---|---|---|
| Geometrical Characteristics | |||
| Cladding Diameter | 125±0.7 | μm | |
| Cladding Non-circularity | ≤0.8 | % | |
| Coating Diameter | 242±7 | μm | |
| Coating-Cladding Concentricity Error | ≤12 | μm | |
| Coating Diameter | ≤3.0 | % | |
| Core-Cladding Concentricity Error | ≤0.54 | μm | |
| Curl | ≥4 | m | |
| Optical Characteristics | |||
| Attenuation | 1310nm | ≤0.35 | dB/km |
| 1383nm | ≤0.33 | dB/km | |
| 1550nm | ≤0.21 | dB/km | |
| 1625nm | ≤0.23 | dB/km | |
| Zero Dispersion Wavelength | 1300-1322 | nm | |
| Zero Dispersion Slope | ≤0.091 | ps/(nm2●km) | |
| Typical Value | ≤0.086 | ps/(nm2●km) | |
| PMD | Maximum Individual Fiber | ≤0.2 | ps/√km |
| PMD Link (M=20, Q=0.01%) | ≤0.1 | ps/√km | |
| Typical Value | ≤0.04 | ps/√km | |
| Cable Cut-off Wavelength λcc | ≤1260 | nm | |
| MFD | 1310nm | 8.6±0.4 | μm |
| 1550nm | 9.7±0.6 | μm | |
| Effective Group Index of Refraction | 1310nm | 1.4672 | |
| 1550nm | 1.4683 | ||
| Point Discontinuity | 1310nm | ≤0.04 | dB/km |
| 1550nm | ≤0.04 | dB/km | |
| Environmental Characteristics | |||
| Temperature Cycling | -60℃+85℃ | ≤0.03 | dB/km |
| Temperature Humidity Cycling | 85℃、 RH85%、 30 days | ≤0.03 | dB/km |
| Water Immersion | 23℃、 30 days | ≤0.03 | dB/km |
| Dry Heat Aging | 85℃、 30 days | ≤0.03 | dB/km |
| Mechanical Characteristics | |||
| Proof Test | ≥1 | % | |
| ≥9.1 | N | ||
| ≥0.73 | Gpa | ||
| Coating Strip Force | Peak Force | 1.3-8.9 | N |
| Typical Value | 1.9 | N | |
| Dynamic Fatigue Nd | ≥20 | ||
| Macro-bend Induced Attenuation | R15 mm， 1550 nm 10 turns with radius of 15mm at 1550nm |
≤0.2 | dB |
| R15 mm， 1625 nm 10 turns with radius of 15mm at 1550nm |
≤0.8 | dB | |
| R10 mm， 1550 nm 1 turn with radius of 10mm at 1550nm |
≤0.7 | dB | |
| R10 mm， 1625 nm 1 turn with radius of 10mm at 1625nm |
≤1.2 | dB | |
| Length per reel | 2.1-61 | km | |
Immagine illustrativa
Foto di riferimento di questo tipo di prodotto, non l'articolo esatto spedito.
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