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G.654D

The large mode field diameter cutoff wavelength shifted single-mode fiber (G.654D) is a type of fiber with low attenuation and large effective area, which can achieve high-speed transmission over long distances and multiple wavelengths on the seabed.

Consulting Product
Product Details

G.654D single-mode fiber with large-mode-field diameter and wavelength-dependent attenuation

product description :

Single-mode fiber (G.654D) with large mode field diameter and zero-displacement cutoff wavelength is a type of fiber featuring low attenuation and large effective area, enabling high-speed transmission over long distances and across multiple wavelengths under submarine conditions.

operative norm :

It meets and exceeds the requirements of ITU-T G.654D and IEC 60793-2-50 B1.2 fiber optic technical specifications.

Product features:

The large effective area of optical fiber can effectively reduce the nonlinear effect of optical fiber transmission and realize the error-free transmission over long distance under the sea.

Product Application:

Suitable for long-distance submarine optical cables.

Optical fiber performance

Main indicator name

technical parameter

Geometry

cladding diameter

Coating Diameter

Outer coating/concentricity error (OCE) Inner core/concentricity error (ECC)

non-circularity of cladding

125±1μm

245±10μm ≤12.0μm ≤0.6μm

≤1.0%

optical performance

Magnetic field diameter (MFD) 1550nm effective area

1550nm discount factor

1625nm discount factor

Maximum attenuation in the 1522-1575nm range compared to 1550nm attenuation, showing discontinuity in 1550nm attenuation.

1550nm dispersion coefficient

1550nm dispersion slope

PMD coefficient (per fiber) -Polarization mode dispersion (PMD) at 1550nm wavelength after fiber cabling; PMD coefficient (per link) -M (number of fiber segments)

Q( probability )

Maximum PMDQ of the 1550nm link after fiber optic cable installation

12.0±0.7μm

113±10μm²  ≤0.180dB/km

≤0.200dB/km

≤0.02dB/km

≤0.1dB

17-23ps/(nm*km)

0.05-0.07ps/(nm²*km) ≤0.125ps/kmV

20 paragraphs

0.0001

≤0.10ps/kmY2

mechanical behavior

Filter tension

Coating peeling force (average)

Coating peeling force (peak) and dynamic fatigue parameter Nd

≥0.69GPa

1.0~5.0N

1.0~8.9N ≥20

environmental performance

Constant humidity and heat: temperature 85℃±2℃, relative humidity not less than 85%, placed for 30 days. Dry heat: temperature 85℃±2℃, placed for 30 days.

Temperature characteristics: operating range of-60℃ to +85℃ with two cycle periods

Soak in pure water at 23℃±5℃ for 30 days

≤0.05dB/km

≤0.05dB/km

≤0.05dB/km

≤0.05dB/km

Bending performance

30mm radius, 100 turns, maximum macro bending loss at 1550nm/1625nm

≤2.0dB

Fiber length

/

2.1~61km