Cabled Fibre Specifications

The following tables provide the specifications for typical values of Corning SMF28 singlemode fibre and multimode fibres that has been cabled. Certain values may change, and the attenuation value is quoted as a Maximum. These tables are provided as a guide and users should refer to the particular fibre being used in their choice of cable.

Select Fibre Size

SINGLEMODE TIGHT BUFFERED

SINGLEMODE LOOSE TUBE

62.5/125 µm TIGHT BUFFERED

62.5/125 µm LOOSE TUBE

50/125 µm TIGHT BUFFERED

50/125 µm LOOSE TUBE

SINGLEMODE TIGHT BUFFERED
CORE DIAMETER 8.3 µm
MODE FIELD DIAMETER 9.30 ± 0.50 µm @ 1310 nm
. 10.50 ± 1.00 µm @ 1550 nm
CLADDING DIAMETER 125.0 ± 1.0 µm
CORE-CLAD CONCENTRICITY £ 0.5 mm
CLADDING NON-CIRCULARITY £ 1.0%
COATING DIAMETER 245 ± 5 µm
COATING-CLADDING CONCENTRICITY < 12 µm
BUFFER DIAMETER 900 ± 50 µm
PROOF TEST 100 kpsi (0.70 GN/m2)
. .
POINT DISCONTINUITY £ 0.10 dB @ 1310 nm and 1550 nm
CABLE CUTOFF WAVELENGTH (lccf) < 1260 nm
ZERO DISPERSION WAVELENGTH (lo) 1301.5 nm £ lo £ 1321.5 nm
ZERO DISPERSION SLOPE (So) £ 0.092 ps/(nm2 · km)
REFRACTIVE INDEX DIFFERENCE 0.36%
FIBRE CURL ³ 4.0 m radius of curvature
. .
OPTICAL SPECIFICATIONS: .
. .
MAXIMUM ATTENUATION 0.50 dB/km @ 1310 nm
. 0.50 dB/km @ 1550 nm
. .
AT WATER PEAK £ 2.1 dB/km @ 1383 ± 3 nm
VS WAVELENGTH £ 0.05 dB/km @ 1285 - 1330 nm
. £ 0.05 dB/km @ 1525 - 1575 nm
. .
NUMERICAL APERTURE 0.13

SINGLEMODE LOOSE TUBE
CORE DIAMETER 8.3 µm
MODE FIELD DIAMETER 9.30 ± 0.50 µm @ 1310 nm
. 10.50 ± 1.00 µm @ 1550 nm
CLADDING DIAMETER 125.0 ± 1.0 µm
CORE-CLAD CONCENTRICITY £ 0.5 mm
CLADDING NON-CIRCULARITY £ 1.0%
COATING DIAMETER 245 ± 5 µm
COATING-CLADDING CONCENTRICITY < 12 µm
PROOF TEST 100 kpsi (0.70 GN/m2)
. .
POINT DISCONTINUITY £ 0.10 dB @ 1310 nm and 1550 nm
CABLE CUTOFF WAVELENGTH (lccf) < 1260 nm
ZERO DISPERSION WAVELENGTH (lo) 1301.5 nm £ lo £ 1321.5 nm
ZERO DISPERSION SLOPE (So) £ 0.092 ps/(nm2 · km)
REFRACTIVE INDEX DIFFERENCE 0.36%
FIBER CURL ³ 4.0 m radius of curvature
. .
OPTICAL SPECIFICATIONS: .
. .
MAX ATTENUATION 0.40 dB/km @ 1310 nm
. 0.30 dB/km @ 1550 nm
. .
AT WATER PEAK £ 2.1 dB/km @ 1383 ± 3 nm
VS WAVELENGTH £ 0.05 dB/km @ 1285 - 1330 nm
. £ 0.05 dB/km @ 1525 - 1575 nm
. .
NUMERICAL APERTURE 0.13

62.5/125 µm TIGHT BUFFERED
CORE DIAMETER 62.5 ± 3.0 µm
CLADDING DIAMETER 125.0 ± 2.0 µm
CORE-CLAD CONCENTRICITY £ 3.0 mm
CORE NON-CIRCULARITY £ 5.0%
CLADDING NON-CIRCULARITY < 2.0%
COATING DIAMETER 245 ± 10 µm
COATING-CLADDING CONCENTRICITY < 12 µm
BUFFER DIAMETER 900 ± 50 µm
PROOF TEST 100 kpsi (0.70 GN/m2)
. .
POINT DISCONTINUITY £ 0.20 dB @ 850 nm and 1300 nm
ZERO DISPERSION WAVELENGTH (lo) 1332 nm £ lo £1354 nm
ZERO DISPERSION SLOPE (So) £ 0.097 ps/(nm2 · km)
. .
OPTICAL SPECIFICATIONS: .
. .
MAXIMUM ATTENUATION 3.5 dB/km @ 850 nm
. 1.0 dB/km @ 1300 nm
. .
AT WATER PEAK £ 1.0 dB/km @ 1380 nm
. .
MINIMUM BANDWIDTH 200 Mhz-km @ 850 nm
. 500 Mhz-km @ 1300 nm
. .
NUMERICAL APERTURE 0.275 ± 0.015

62.5/125 µm LOOSE TUBE
CORE DIAMETER 62.5 ± 3.0 µm
CLADDING DIAMETER 125.0 ± 2.0 µm
CORE-CLAD CONCENTRICITY £ 3.0 mm
CORE NON-CIRCULARITY £ 5.0%
CLADDING NON-CIRCULARITY < 2.0%
COATING DIAMETER 245 ± 10 µm
COATING-CLADDING CONCENTRICITY < 12 µm
PROOF TEST 100 kpsi (0.70 GN/m2)
. .
POINT DISCONTINUITY £ 0.20 dB @ 850 nm and 1300 nm
ZERO DISPERSION WAVELENGTH (lo) 1332 nm £ lo £ 1354 nm
ZERO DISPERSION SLOPE (So) £ 0.097 ps/(nm2 · km)
. .
OPTICAL SPECIFICATIONS: .
. .
MAXIMUM ATTENUATION 3.5 dB/km @ 850 nm
. 1.0 dB/km @ 1300 nm
. .
AT WATER PEAK £ 1.0 dB/km @ 1380 nm
. .
MINIMUM BANDWIDTH 200 Mhz-km @ 850 nm
. 500 Mhz-km @ 1300 nm
. .
NUMERICAL APERTURE 0.275 ± 0.015

50/125 µm TIGHT BUFFERED
CORE DIAMETER 50.0 ± 3.0 µm
CLADDING DIAMETER 125.0 ± 2.0 µm
CORE-CLAD CONCENTRICITY < 3.0 mm
CORE NON-CIRCULARITY £ 5.0%
CLADDING NON-CIRCULARITY < 2.0%
COATING DIAMETER 245 ± 10 µm
COATING-CLADDING CONCENTRICITY < 12 µm
BUFFER DIAMETER 900 ± 50 µm
PROOF TEST 100 kpsi (0.70 GN/m2)
. .
POINT DISCONTINUITY £ 0.20 dB @ 850 nm and 1300 nm
ZERO DISPERSION WAVELENGTH (lo) 1297 nm £ lo £ 1316 nm
ZERO DISPERSION SLOPE (So) £ 0.101 ps/(nm2 · km)
. .
OPTICAL SPECIFICATIONS: .
. .
MAXIMUM ATTENUATION 3.5 dB/km @ 850 nm
. 1.5 dB/km @ 1300 nm
. .
AT WATER PEAK £ 3.0 dB/km @ 1380 nm
. .
MINIMUM BANDWIDTH 500 Mhz-km @ 850 nm
. 500 Mhz-km @ 1300 nm
. .
NUMERICAL APERTURE 0.200 ± 0.015

50/125 µm LOOSE TUBE
CORE DIAMETER 50.0 ± 3.0 µm
CLADDING DIAMETER 125.0 ± 2.0 µm
CORE-CLAD CONCENTRICITY < 3.0 mm
CORE NON-CIRCULARITY £ 5.0%
CLADDING NON-CIRCULARITY < 2.0%
COATING DIAMETER 245 ± 10 µm
COATING-CLADDING CONCENTRICITY < 12 µm
PROOF TEST 100 kpsi (0.70 GN/m2)
. .
POINT DISCONTINUITY £ 0.20 dB @ 850 nm and 1300 nm
ZERO DISPERSION WAVELENGTH (lo) 1297 nm £ lo £ 1316 nm
ZERO DISPERSION SLOPE (So) £ 0.101 ps/(nm2 · km)
. .
OPTICAL SPECIFICATIONS: .
. .
MAXIMUM ATTENUATION 3.5 dB/km @ 850 nm
. 1.5 dB/km @ 1300 nm
. .
AT WATER PEAK £ 3.0 dB/km @ 1380 nm
. .
MINIMUM BANDWIDTH 500 Mhz-km @ 850 nm
. 500 Mhz-km @ 1300 nm
. .
NUMERICAL APERTURE 0.200 ± 0.015