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SINGLE
MODE MATCHED CLAD FIBRE
CHARACTERISTICS
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| OPTICAL PROPERTIES |
SM/9/125/245
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| CHARACTERISTICS |
MEASUREMENT
METHOD
|
UNIT
|
SPECIFIED
VALUE
|
| Attenuation | |||
| @
1310 nm @ 1550 nm bet. 1285 - 1330 nm |
Back
Scattering
Back Scattering Spectral Attenuation |
dB/Km.
dB/Km. dB/Km. |
<
= 0.35
< = 0.22 < = 0.38 +0.02 |
| Cut-off Wavelength |
Bend
Reference
|
nm
|
1160
- 1320 nm
|
| Mode field Diameter |
Variable
Aperature
|
um
|
9.3
± 0.5
|
| Chromatic
Dispersion bet. 1270 - 1340 nm bet. 1285 - 1330 nm @ 1550 nm |
Phase
Shift Technique
|
ps/nm.km
|
<=5.3 <=3.5 <=18.0 |
| Zero Dispersion Wavelength |
|
nm
|
1300
- 1324
|
| Zero Dispersion slope |
|
ps/nm².km
|
<=0.092
|
| Cladding Diameter |
Near
Field Technique
|
um
|
125
± 1
|
| Cladding Non-Circularity |
Near
Field Technique
|
%
|
<=1
|
| Core/Clad Concentricity Error. |
Near
Field Technique
|
um
|
<=0.8
|
| Core ovality |
Near
Field Technique
|
um
|
<=6
|
| Coating Diameter |
Side
View Technique
|
um
|
245
± 10
|
| Coating concentricity |
Side
View Technique
|
um
|
<=10
|
| Polarisation Mode Dispersion |
|
ps/(km)½
|
<=0.2
|
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| MECHANICAL PROPERTIES | |||
| Macro Bend Test |
Change
in attenuation
|
dB
|
<=0.1
|
| Wavelength |
1550nm
|
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| Mandrel diameter |
60mm
|
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| No. of turns |
100
|
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| Micro Bend Test |
Change
in attenuatiom
|
dB
|
<=0.5
|
| Wavelength |
1550nm
|
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| Mandrel diameter |
32
± 0.5 mm
|
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| No. of turns |
1
|
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| Fibre Curl |
Radius
of Curvature
|
Meter
|
>=4
|
| Proof Test(1 Second) |
Off-line
|
%
|
1
|
| Coating Strippability |
|
Newton
|
1.3<=F<=8.9
|
|
Dynamic
Tensile Strength
Unaged Aged |
|
G.Pa.(Kpsi) G.Pa.(Kpsi) |
>3.8(>550) >3.00(>440) |
| Dynamic Fatigue |
|
|
>=20
|
| Static Fatigue |
|
|
>=20
|
| ENVIRONMENTAL PROPERTIES | |||
| Temperature
Cycling (-60°C to +85°C) |
Change
in attenuation
at 1310 nm & 1550 nm |
dB/KM
|
<=0.05
|
| Temperature
humidity cycling (30 days) (-10°C, 4% RH to 85°C, 95% RH) |
Change
in attenuation
at 1310 nm & 1550 nm |
dB/KM
|
<=0.05
|
| Heat aging test 30 days (85°C) |
Change
in attenuation
at 1310 nm & 1550 nm |
dB/KM
|
<=0.05
|
| Water immersion test 30 days (23°C ± 5°C ) |
Change
in attenuation
at 1310 nm & 1550 nm |
dB/KM
|
<=0.05
|
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