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 62.5/125 µm
Multimode Fibre
This DrakaElite
TM
RadHard 62.5 µm core diameter 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.
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 DrakaElite
TM
62.5 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 A1b
Optical Fibre Specification, TIA-492AAAA and Telcordia GR-20-Core.
RadHard 62.5/125 µm Multimode Fibre
Legacy radiation hardened 62.5 µm MMF for irradiative environments
Product Type:
Legacy RadHard 62.5 µm GI-Multimode Fibre
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
Typical RIA for Draka RH 62.5 µm MMF at
1300 nm; dose rate 1.67 Gy/s, T=28
C
0
1
2
3
4
5
6
7
8
0 2000 4000 6000 8000 10000
Dose [Gy(SiO2)]
Induced loss at 1300nm [dB/100m]
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 62.5/125 µm
Multimode Fibre
Characteristics Conditions Specified Values Units
OPTICAL SPECIFICATIONS (Uncabled fibre)
Attenuation Coefficient
850 nm
1300 nm
≤
≤≤
≤ 3.0
≤
≤≤
≤ 0.7
dB/km
Overfilled Modal Bandwidth (min.)
1
850 nm
1300 nm
200
600
MHz.km
Numerical Aperture
0.275 0.015
Chromatic Dispersion
Zero Dispersion Wavelength, λ
0
1320 ≤
≤≤
≤ λ
0
≤
≤≤
≤ 1365
nm
Zero Dispersion Slope, S
0
1320 nm ≤
≤≤
≤ λ
0
≤
≤≤
≤ 1348 nm
1348 nm ≤ λ
0
≤ 1365 nm
≤ 0.11
≤ 0.001 (1458 - 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
1.496
1.491
GEOMERICAL SPECIFICATIONS
Core Diameter
62.5 ±
±±
± 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
242 ±
±±
± 10
µm
Coating Non-Circularity
≤
≤≤
≤ 5
%
Coating/Cladding Concentricity Error
≤
≤≤
≤ 10
µm
Length Standard lengths 2.2 – 8.8 km
MECHANICAL SPECIFICATIONS
Coating Strip Force Average strip force, unaged and aged
4
1 to 3 N
Peak strip force, unaged and aged
4
1.2 to 8.9 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 dB/100m
RadHard 62.5/125 µm Multimode Fibre
Legacy radiation hardened 62.5 µm MMF for irradiative environments
Product Type:
Legacy RadHard 62.5 µm GI-Multimode Fibre
Issue date: 04-2013
Coating Type: Dual Layer Primary Coating (DLPC9) Supersedes: 01-2013
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.