SiO2 Non-zero Dispersion Single Mode Optic Fiber - G.655/B4 Fiber

Non-zero dispersion-shifted (NZDS) single-mode optical fiber for long-haul DWDM systems and low-dispersion telecom applications.
Gina Gao

G.655/B4 Fiber

  1. Fiber Core
  2. Cladding Layer

Standard of execution

GB/T9771.5-2008

Geological Sizes

  • Mode field Diameter (1550nm): (8.0 ~ 11.0) ± 0.6µm
  • Cladding Layer Diameter: 125 ± 1.0μm
  • Cladding Layer Non-circularity: ≤ 1.0%
  • Core/Cladding Layer Concentricity Tolerance: ≤ 0.6µm
  • Coating Layer Diameter: 245 ± 10 μm (uncolored)
  • Cladding/Coating Layer Concentricity Tolerance: ≤ 12.5µm
  • Bending Radius: R ≥ 4m

Optic & Transmission Performance

1. Attenuation Coefficient

Type \ Category1550nm1625nm
Type A≤ 0.22 dB/km≤ 0.27 dB/km
Type B≤ 0.25 dB/km≤ 0.30 dB/km

2. Nominal Attenuation:

  • Ф60mm, 100 rings
  • Type A/B/C 1625nm ≤ 0.2dB
  • Type D/E 1625nm ≤ 0.1dB

3. Cutoff Wavelength

  • Jumper wire cutoff wavelength(λcj) ≤ 1450nm
  • Optic fiber cable cutoff wavelength(λcj) ≤ 1450nm.

4. Dispersion

Dispersion zone at waveband C. Non-zero dispersion zone(nm) 1530 ≤ λmin ≤ λmax ≤ 1565,
Dispersion absolute value of non-zero dispersion:

  • Type A, 0.1 ~ 6.0 PS/(nm·km),
  • Type B, 1.0 ~ 10.0 PS/(nm·km) .

Polarization mode dispersion coefficient(PMD):

  • Type A/B ≤ 0.5ps √km,
  • Type C/D/E ≤ 0.2ps √km.

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