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MULTI MODE OPTICAL
FIBRE CHARACTERISTICS
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| OPTICAL PROPERTIES | MM/50/125/245 MM/62.5/125/245 |
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| CHARACTERISTICS |
MEASUREMENT METHOD |
UNIT |
SPECIFIED VALUE |
|
|
50/125
|
62.5/125
|
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|
Attenuation |
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| @
850 nm @ 1300 nm |
Back Scattering |
dB/Km. |
< = 3.0
< = 0.9 |
< = 3.0
< = 1.0 |
| Cladding Diameter |
Near Field Technique
|
um |
125 ± 2 |
125 ± 2
|
| Clading Non-Circularity |
Near Field Technique |
% |
< = 2 |
< = 2 |
| Coating
Diameter |
Side View Technique |
um |
245
± 8
|
245
± 8
|
| Core Diameter |
Near
Field Technique
|
um |
50 ± 3 |
62.5
± 3
|
| Core Ovality |
Near
Field Technique
|
% |
<
= 6
|
<
= 6
|
| Core Concentricity |
Near Field Technique |
% |
<
= 6
|
<
= 6
|
| Numeric Aperture |
Variable Aperture |
|
0.200 ±0.020 |
0.275 ±0.020 |
| Bandwidth |
|
|
|
|
|
@850nm |
Impulse Response Impulse Response
|
Mhz. Km |
>=400 |
>=160 |
|
>=500 |
>=400 |
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| MECHANICAL PROPERTIES | ||||
| Macro Bend Test | Change in Attenuation |
dB
|
>=0.5
|
>=0.5
|
| Wavelength |
850nm/1300nm
|
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| Mandrel diameter |
60mm
|
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| No. of turns |
100
|
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| Fibre Curl |
Radious of Curvature |
Meter
|
>
= 4
|
>
= 4
|
| Proof Test(1 sec) |
Off-line |
%
|
1
|
1
|
| Coating Strippability |
|
Newton
|
1.3<=F<=8.9
|
1.3<=F<=8.9
|
| Dynamic
Tensile Strength Unaged Aged |
G.Pa(Kpsi) G.Pa(Kpsi) |
>3.8(>550) >3.00(>440) |
>3.8(>550) >3.00(>440) |
|
| Dynamic Fatigue |
|
|
>
= 20
|
>
= 20
|
| Static Fatigue |
|
|
>
= 20
|
>
= 20
|
| ENVIRONMENTAL PROPERTIES | ||||
| Temperature
Cycling (-60°C to +85°C) |
|
dB/KM
|
<=0.05 |
<=0.05
|
| Temperature
humidity cycling (30 days) (-10°C, 4% RH to 85°C, 95% RH) |
|
dB/KM
|
<=0.05 |
<=0.05
|
| Heat aging test 30 days (85° C) |
|
dB/KM |
<=0.05 |
<=0.05
|
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