Prysmian Group Netherlands: Tel: +31 (0)402958700
fibresales@prysmiangroup.com France: Tel: +33 (0)321794900
http://fibre.prysmiangroup.com USA: Tel: +1 828-495-8611
DrakaElite Specialty Fibre
RadHard 50/125 µm
OM3/OM4 MMF
This DrakaElite
TM
RadHard 50 µm core diameter OM3/OM4 multimode fibre (MMF) can be used for high
irradiative environments (e.g. gamma rays, X-flash, neutrons protons) up to a dose of about 10 kGy. For extreme
irradiative environments (some MGy dose) DrakaElite
TM
Super RadHard 50 µm core diameter MMF is
recommended. Note: 1 Gy = 100 Rad.
This Germanium-doped 50 µm core diameter OM3/OM4 RadHard MMF has been qualified and approved by the
U.S. Defense Supply Center, Columbus (DSCC) in accordance with the U.S. Military MIL-PRF-49291/1 specification
and offers increased laser-launch bandwidth (OM3 / OM4 quality).
Because Radiation Induced Attenuation (RIA) is a strong function of time after dose, dose rate, temperature, system
operational wavelength, and system operational power, assessing the RIA performance of fibres should be conducted
as close to conditions in the final application as possible.
The Draka 50 µm core diameter RadHard MMF can be used in all cable constructions, including loose tube, tight
buffered, ribbon and central tube designs. This fibre complies with or exceeds IEC 60793-2-10 category A1a.2 and
A1a.3 Optical Fibre Specification, TIA-492AAAC / 492AAAD and Telcordia GR-20-Core.
Prysmian Group’ fibre plant Draka Comteq Fibre B.V. in Eindhoven , Netherlands, is MIL-STD-790 certified.
RadHard 50 µm OM3/OM4 Multimode (MIL-PRF-49291/1)
Legacy radiation hardened 50 µm OM3 / OM4 MMF for irradiative environments
Product Type:
Legacy RadHard 50 µm OM3/OM4 GI-Multimode Fibre (MIL-PRF-49291/1)
Issue date: 04-2013
Coating Type: Dual Layer Primary Coating (DLPC9) Supersedes: 01-2013
Features Advantages
RadHard behaviour • Suitable for medium irradiative environments
Coated with the dual layer UV Acrylate
• Optimized performance in tight-buffer cable
applications
0
1
2
3
4
5
6
7
8
0 2000 4000 6000 8000 10000
Dose [Gy(SiO2)]
Induced loss at 1310nm [dB/100m]
Typical RIA for Draka RH 50 µm MMF at
1300 nm; dose rate 1.67 Gy/s, T=28 C
Steady state gamma irradiation test conditions – MIL 49291-1
Temperature Dose rate Total dose
- 28°C / 25°C / 85°C 0.50 Gy/s (SiO2) Classified
Irradiation test requirements – MIL 49291-1
Max. induced
attenuation @1300nm
Attenuation at
specified
recovery time
Specified
recovery time
< 50 dB/km
(Total dose classified)
< 15 @ -28 °C
< 5 @ 25 °C
< 5 @ 85 °C
1000 s
Prysmian Group Netherlands: Tel: +31 (0)402958700
fibresales@prysmiangroup.com France: Tel: +33 (0)321794900
http://fibre.prysmiangroup.com USA: Tel: +1 828-495-8611
DrakaElite Specialty Fibre
RadHard 50/125 µm
OM3/OM4 MMF
Characteristics Conditions Specified Values Units
OPTICAL SPECIFICATIONS (Uncabled fibre)
Attenuation Coefficient
850 nm
1300 nm
≤
≤≤
≤ 2.4
≤
≤≤
≤ 0.6
dB/km
Effective Modal Bandwidth (EMB) (min.)
OM3 / 850 nm
OM4 / 850 nm
2000
4700
MHz.km
Overfilled Modal Bandwidth (min.)
1
OM3 / 850 nm
OM4 / 850 nm
OM3 + OM4 / 1300 nm
1500
3500
500
MHz.km
Numerical Aperture
0.200 0.015
Chromatic Dispersion
Zero Dispersion Wavelength, λ
0
1295 ≤
≤≤
≤ λ
0
≤
≤≤
≤ 1340
nm
Zero Dispersion Slope, S
0
1295 nm ≤ λ
0
≤
≤≤
≤ 1310 nm
1310 nm ≤ λ
0
≤ 1340 nm
≤ 0.105
≤ 0.000375 (1590 - λ
0
)
ps/nm
2
.km
Bending Loss 100 turns, D=75 mm; 850nm / 1300nm
≤
≤≤
≤ 0.5
dB
Backscatter Characteristics
2
Point Discontinuity
3
850 nm, 1300 nm
≤
≤≤
≤ 0.1
dB
Irregularities over fibre length 850 nm, 1300 nm
≤
≤≤
≤ 0.1
dB
Reflections Not allowed
Group Index of Refraction (Typ.)
850 nm
1300 nm
1.482
1.477
GEOMERICAL SPECIFICATIONS
Core Diameter
50 ±
±±
± 2.5
µm
Core Non-Circularity
≤
≤≤
≤ 5
%
Core/Cladding Concentricity Error
≤
≤≤
≤ 1
µm
Cladding Diameter
125.0 ±
±±
± 1.0
µm
Cladding Non-Circularity
≤
≤≤
≤ 0.7
%
Coating Diameter M49291/1-01 M49291/1-02
242 ±
±±
± 10 500 ± 15
µm
Coating Non-Circularity M49291/1-01 M49291/1-02
≤
≤≤
≤ 5 ≤
≤≤
≤ 5
%
Coating/Cladding Concentricity Error M49291/1-01 M49291/1-02
≤
≤≤
≤ 10 ≤
≤≤
≤ 20
µm
Length Standard lengths 2.2 – 8.8 1.1 – 6.6 km
MECHANICAL SPECIFICATIONS
Coating Strip Force Average strip force, unaged and aged
4
1 to 3 Not. Spec. N
Peak strip force, unaged and aged
4
1.8 to 13.2 1.8 to 20 N
Proof Test Off line
>
>>
> 0.7 (100)
GPa (kpsi)
Dynamic Tensile Strength
(median value)
0.5 meter gauge length, unaged and aged
5
>
>>
> 3.8 (550)
GPa (kpsi)
Fatigue Parameter (Typical) Dynamic fatigue, unaged and aged
5
n
d
> 18
ENVIRONMENTAL SPECIFICATIONS
Temperature Cycling
850 nm, 1300 nm; -60 C to +85 C
≤
≤≤
≤ 0.2
dB/km
Temperature-Humidity Cycling
850 nm, 1300 nm; -10 C to +85 C, 4-98% RH
≤
≤≤
≤ 0.2
dB/km
Water Immersion
850 nm, 1300 nm; 23 C, 30 days
≤
≤≤
≤ 0.2
dB/km
Dry Heat
850 nm, 1300 nm; 85 C, 30 days
≤
≤≤
≤ 0.2
dB/km
Damp Heat
850 nm, 1300 nm; 85 C; 85% RH, 30 days
≤
≤≤
≤ 0.2
dB/km
Operating Temperature Range -55 to +85
C
Non-Operating + Storage Temperature Range -62 to +85
C
TYPICAL RADIATION INDUCED ATTENUATION (RIA)
Radiation Induced Attenuation
Dose: 10 KGy; Dose rate: 1.67 Gy/s; T=28 C;
1300nm
~7.5 dB/100m
1). The modal bandwidth is linearly normalized to 1 km, according to IEC 60793-2-10.
2). OTDR measurement with 0.5 µs pulse width.
3). Mean of bi-directional measurement.
4). Aging at 23 C, 0 C and 45 C; 30 days at 85 C and 85% RH; 14 days water immersion at 23 C.
5). Aging at 85 C, 85% RH, 30 days.
RadHard 50 µm OM3/OM4 Multimode (MIL-PRF-49291/1)
Legacy radiation hardened 50 µm OM3 / OM4 MMF for irradiative environments
Product Type:
Legacy RadHard 50 µm OM3/OM4 GI-Multimode Fibre (MIL-PRF-49291/1)
Issue date: 04-2013
Coating Type: Dual Layer Primary Coating (DLPC9) Supersedes: 01-2013