OPTOKON

Fiber type

62.5/125 OM1

OPK code

OM1

Optical Characteristics

Attenuation coefficient Loose Tube Cables (Typical / Maximum)

at 850 nm

2.6 / 3.5 dB/km

at 1300 nm

0.5 / 1.5 dB/km

Attenuation coefficient Tight Buffered Cables (Typical / Maximum)

at 850 nm

2.6 / 3.5 dB/km

at 1300 nm

0.5 / 1.5 dB/km

Point of discontinuity  at 1300 nm

≤ 0.2 dB

Zero dispersion wavelength

1320 – 1365 nm

Zero dispersion slope  1320 ≤ l0 ≤ 1348 nm

≤ 0.11 ps/(nm2·km)

Zero dispersion slope  1348 ≤ l0 ≤ 1365 nm

≤ 0.001·(1458-l0 ) ps/(nm2·km)

Numerical Aperture

0.275 ± 0.015

Effective group index of refraction at 850 nm

1.497

Effective group index of refraction at 1300 nm

1.493

Performance Characteristics 

Bandwidth* (Overfilled launch)

at 850 nm

≥ 160 – ≥ 250 MHz·km

at 1300 nm

≥ 500 – ≥ 800 MHz·km

Transmission Link Lengths at 1Gb/s1

at 850 nm

≥ 300 – ≥ 500 m

at 1300 nm

≥ 550 – ≥ 1000 m

Geometrical Characteristics 

Core diameter

62.5 ± 2.5 µm

Core non-circularity

≤ 5.0 %

Core/Cladding concentricity error

≤ 1 µm

Cladding diameter

125.0 ± 1.0 µm

Cladding non-circularity

≤ 1.0 %

Primary coating diameter (uncoloured fibre)

242 ±7 µm

Primary coating diameter (coloured fibre)

250 ±10 µm

Coating-Cladding concentricity

≤ 10 µm

Macrobending loss

100 turns, mandrel diameter 75 mm at 850 nm

≤ 0.5 dB

100 turns, mandrel diameter 75 mm at 1300 nm

≤ 0.5 dB

Mechanical Characteristics 

Proof test level

≥ 0.69 Gpa (≥ 8.8 N)

Coating strip force

1.9 N

Dynamic fatigue resistance parameter

≥ 23

1 for both, bandwidth and link lengths special combinations and values are available.

Typical attenuation is the value measured for at least 90% of the fibers in the cable.

OTDR measurement values can only be guaranteed for cable lengths of 1000 m and more.

Cable on the reel may show an discontinuity of the OTDR curve caused by winding of the cable on the reel.