Stock Code:601869.SH / 06869.HK

FarBand® Ultra Low Loss and Large Effective Area Fibre

For the next generation optical transmission network, lower attenuation or larger effective area of the fibre can help the system meet 3U (Ultra high speed, Ultra large capacity, Ultra long-haul) features. Now YOFC can deliver you larger effective area and lower attenuation within one fibre: FarBand® Ultra.
Product standards

FarBand® Ultra fibre complies with or exceeds the ITU-T G.654.B/E recommendation and IEC 60793-2-50 B1.2 specification.

Product advantage

• Larger effective area reduces nonlinear effect and enables higher signal power launched into the transmission system.

• Enable higher transmission speeds with more wavelengths over ultra long-haul distances.

• Lower attenuation level which meets the demand of extended long distance transmission

• Reduce number of repeaters and minimize CAPEX and OPEX.

• Lower bending induced loss to meet complicated deployment conditions and cable structures.

How to calculate the contribution of larger effective area and lower attenuation?

Based on the formula of OSNR, lower attenuation and larger effective area will increase OSNR of optical transmission system. And FOM (Figure of Merit) is established to calculate the contribution of effective area and attenuation. As shown in the table, YOFC ultra low loss and large effective area fibre can provide greater performance improvement than ultra low loss fibre below, or low loss and large effective fibre.

Fibre Type

Att.

Aeff.

FOM

SSMF(Ref.)

0.2

80

/

LL

0.18

80

1.6

ULL

0.17

80

2.3

ULL

0.15

80

3.8

LL-LAF

0.18

130

4.9

ULL-LAF

0.16

110

5.8

ULL-LAF

0.16

130

6.4

Specifications

Characteristics Conditions Specified values Units

Optical Specifications

Nominal Effective Area

1550nm

110

125

[μm2]

Mode Field Diameter

1550nm

11.4-12.2 12.0-13.0

[μm]

 

Attenuation

1550nm

≤0.17

[dB/km]

1625nm

≤0.20

[dB/km]

Attenuation vs. Wavelength

Max. α difference

1525-1575nm, in reference to 1550nm

≤0.02

[dB/km]

1550-1625nm, in reference to 1550nm

≤0.03

[dB/km]

Dispersion Coefficient

1550nm

≤23

[ps/nm·km]

1625nm

≤27

[ps/nm·km]

Dispersion Slope

1550nm

0.050-0.070

[ps/nm2·km]

PMD

Maximum Individual Fibre

--

≤0.1

[ps/√km]

Link Design Value(M=20,Q=0.01%)

--

≤0.06

[ps/√km]

Typical Value

--

0.04

[ps/√km]

Cable Cutoff Wavelength (λCC)

--

≤ 1520

[nm]

Effective Group Index of Refraction

1550nm

1.463

1.465

--

Point Discontinuities

1550nm

≤0.05

[dB]

Geometrical Specifications

Cladding Diameter

--

125.0±1.0

[μm]

Cladding Non-Circularity

--

≤1.0

[%]

Coating Diameter

--

235-255

[μm]

Coating-Cladding Concentricity

--

≤12

[μm]

Coating Non-Circularity

--

≤6

[%]

Core-Cladding Concentricity

--

≤0.6

[μm]

Fibre Curl(Radius)

--

≥4

[m]

Delivery Length1

--

Up to 25.2

[km/reel]

Environmental Specifications @1550nm & 1625nm

Temperature Dependence

-60℃ to +85℃

≤0.05

[dB/km]

Temperature-Humidity Cycling

-10°C to +85°C, 98% RH

≤0.05

[dB/km]

Water Immersion

23°C,for 30 days

≤0.05

[dB/km]

Damp Heat

85°C , 85% RH,for 30 days

≤0.05

[dB/km]

Heat Aging

85℃,30 days

≤0.05

[dB/km]

Mechanical Specifications

Proof Test2

--

≥9.0

[N]

--

≥1.0

[%]

--

≥100

[kpsi]

Macro-bend Induced Loss 100 Turns Around a Mandrel of 30 mm Radius

1550nm

≤0.10

[dB]

1625nm

≤0.10

[dB]

Coating Strip Force

typical average force

1.5

[N]

peak force

1.3-8.9

[N]

Dynamic Fatigue Parameter(nd)

--

≥20

--

Remark: 1. Other delivery lengths are available.   2. Higher proof test level is available. 

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