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
Super RadHard
Single-Mode Fibre
0
0,2
0,4
0,6
0,8
1
1,2
-500 0 500 1000 1500 2000
Dose (kGy)
RIA at 1310nm (dB/100m)
Prysmian Group has developed a revolutionary new product as part of its DrakaElite
TM
specialty radiation hardened
(RadHard) fibres portfolio. This Draka Super RadHard single-mode fibre (SMF) shows extremely low sensitivity for
radiation effects in irradiative environments (e.g. gamma rays, X-flash, neutrons protons) while simultaneously offering
high bandwidth.
By combining the excellent performance of the proprietary deposition process (PCVD) with a full Fluorine-doped
design, the Radiation Induced Attenuation (RIA) response of this DrakaElite
TM
Super RadHard SMF is significantly
improved.
It allows much more tolerance than standard MIL-PRF-49291 approved Germanium-doped SMF particularly for dose
levels exposure above 10 kGy. In addition, this Super RadHard SMF exhibits a faster recovery time as compared to
standard RadHard SMFs. The benefit of this Fluorine-doped Super RadHard SMF compared to the standard
Germanium-doped RadHard SMF increases with the total dose from a factor 8 at 20 kGy to a factor 22 at 2 MGy for an
operating wavelength of 1310nm. (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 different fibres should be
conducted as close to conditions in the final application as possible.
The DrakaElite
TM
Fluorine-doped Super RadHard SMF can be used in all cable constructions, including loose tube,
tight buffered, ribbon and central tube designs. This fibre complies with or exceeds ITU-T Recommendation G.652.B,
IEC 60793-2-50 type B1.1 Optical Fibre Specification and Telcordia GR-20-Core.
Features Advantages
Super RadHard behaviour
• Optimized for use in highly irradiative environments
• Strongly improved performance compared to regular
Germanium-doped fibres
Coated with the dual layer UV Acrylate
• Optimized performance in tight-buffer cable
applications
• High resistance to micro-bending
Super RadHard Single-Mode Optical Fibre
Extremely low sensitivity for radiation effects in irradiative environments
Product Type: Super RadHard Single-Mode Fibre Issue date: 04-2013
Coating Type: Dual Layer Primary Coating (DLPC9) Supersedes: 05-2012
Example of RIA for Draka SRH-SMF
at 1310nm under dose
rate of 1.25 Gy/s up to 2 MGy at 45 C
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
Super RadHard
Single-Mode Fibre
Super RadHard Single-Mode Optical Fibre
Extremely low sensitivity for radiation effects in irradiative environments
Product Type: Super RadHard Single-Mode Fibre Issue date: 04-2013
Coating Type: Dual Layer Primary Coating (DLPC9) Supersedes: 05-2012
Characteristics Conditions Specified Values Units
OPTICAL SPECIFICATIONS (Uncabled fibre)
Attenuation Coefficient
1310 nm
1550 nm
≤
≤≤
≤ 0,4
≤
≤≤
≤ 0.3
dB/km
Point Discontinuity 1310 nm / 1550 nm
≤
≤≤
≤ 0.05
dB
Bending Loss
100 turns, R=25 mm; 1310 nm
100 turns, R=25 mm; 1550 nm
100 turns, R=30 mm; 1625 nm
≤
≤≤
≤ 0.05
≤
≤≤
≤ 0.05
≤
≤≤
≤ 0.05
dB
Cabled Cutoff Wavelength
≤
≤≤
≤ 1260
nm
Mode Field Diameter
1310 nm
1550 nm
9.0 ±
±±
± 0.4
10.1 ±
±±
± 0.5
µm
Chromatic Dispersion
Zero Dispersion Wavelength
Slope at Zero Dispersion Wavelength
1300 - 1324
≤ 0,092
nm
ps/(nm
2
.km)
Group Index of Refraction (Typ.)
1310 nm
1550 nm
1.457
1.458
GEOMERICAL SPECIFICATIONS
Cladding Diameter
125.0 ±
±±
± 1.0
µm
Core/Cladding Concentricity Error
≤
≤≤
≤ 0.6
µm
Cladding Non-Circularity
≤
≤≤
≤ 1.0
%
Coating Diameter
242 ±
±±
± 10
µm
Coating Non-Circularity
≤
≤≤
≤ 5
%
Coating/Cladding Concentricity Error
≤
≤≤
≤ 12
µm
Length Standard lengths 1.1, 2.2, 3.3, 4.4 km
MECHANICAL SPECIFICATIONS
Coating Strip Force Average strip force, unaged and aged
1
1 to 3 N
Peak strip force, unaged and aged
1
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
2
>
>>
> 3.8 (550)
GPa (kpsi)
Fatigue Parameter (Typical) Dynamic fatigue, unaged and aged
2
n
d
> 18
ENVIRONMENTAL SPECIFICATIONS
Temperature Cycling
850 nm, 1310 nm; -60 C to +85 C
≤
≤≤
≤ 0.05
dB/km
Temperature-Humidity Cycling
850 nm, 1310 nm; -10 C to +85 C, 4-98% RH
≤
≤≤
≤ 0.05
dB/km
Water Immersion
850 nm, 1310 nm; 23 C, 30 days
≤
≤≤
≤ 0.05
dB/km
Dry Heat
850 nm, 1310 nm; 85 C, 30 days
≤
≤≤
≤ 0.05
dB/km
Damp Heat
850 nm, 1310 nm; 85 C; 85% RH, 30 days
≤
≤≤
≤ 0.05
dB/km
TYPICAL RADIATION INDUCED ATTENUATION (RIA)
Radiation Induced Attenuation
Dose: 10 kGy; Dose rate: 0.2 Gy/s; T=24 C; 1310 nm
Dose: 100 kGy; Dose rate: 1.6 Gy/s; T=24 C; 1310 nm
Dose: 2 MGy; Dose rate: 1.25 Gy/s; T=45 C; 1310 nm
~0,25
~0.5
~1
dB/100m
1). Aging at 23 C, 0 C and 45 C; 30 days at 85 C and 85% RH; 14 days water immersion at 23 C.
2). Aging at 85 C, 85% RH, 30 days.