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
Single-Mode Fibre
This DrakaElite
TM
RadHard single-mode fibre (SMF) 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 SMF is recommended. Note: 1 Gy = 100 Rad.
This Germanium-doped RadHard SMF has been qualified and approved by the U.S. Defense Supply Center, Columbus
(DSCC) in accordance with the U.S. Military MIL-PRF-49291/7 specification. (Note: 500 µm coating is not qualified).
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
Germanium-doped 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.D, IEC
60793-2-50 category B1.3 Optical Fibre Specification and Telcordia GR-20-Core.
Prysmian Group’ fibre plant Draka Comteq Fibre B.V. in Eindhoven , Netherlands, is MIL-STD-790 certified.
RadHard Single-Mode Fibre (MIL-PRF-49291/7)
Legacy radiation hardened SMF for irradiative environments
Product Type:
Legacy RadHard Single-Mode Fibre (MIL-PRF-49291/7)
Issue date: 10-2013
Coating Type: Dual Layer Primary Coating (DLPC9) Supersedes: 04-2013
Features Advantages
RadHard behaviour • Suitable for medium irradiative environments
Coated with the dual layer UV Acrylate
• Optimized performance in tight-buffer cable
applications
RIA reproducibility for Draka RH-SMFs
(5 years difference in production date
at 1570 nm; dose rate 0.45 Gy/s
Steady state gamma irradiation test conditions – MIL 49291-7
Temperature Dose rate Total dose
- 28°C / 25°C / 85°C 0.50 Gy/s (SiO2) Classified
Irradiation test requirements – MIL 49291-7
Max. induced
attenuation @1310nm
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
Single-Mode Fibre
Characteristics Conditions Specified Values Units
OPTICAL SPECIFICATIONS (Uncabled fibre)
Attenuation Coefficient
1310 nm
1385 nm
1550 nm
≤
≤≤
≤ 0,4
≤
≤≤
≤ 0,4
≤
≤≤
≤ 0.3
dB/km
Point Discontinuity 1310 nm / 1550 nm
≤
≤≤
≤ 0.05
dB
Bending Loss
100 turns, R=38mm; 1310nm
100 turns, R=38mm; 1550nm
≤
≤≤
≤ 0.1
≤
≤≤
≤ 1.0
dB
Cabled Cutoff Wavelength
≤
≤≤
≤ 1260
nm
Mode Field Diameter
1310 nm
1550 nm
9.0 ±
±±
± 0.4
10.1 ±
±±
± 0.5
µm
Chromatic Dispersion
1310 nm
1550 nm
< 3.2
< 22
ps/nm/km
Group Index of Refraction (Typ.)
1310 nm
1550 nm
1.467
1.468
GEOMERICAL SPECIFICATIONS
Cladding Diameter
125.0 ±
±±
± 1.0
µm
Core/Cladding Concentricity Error
≤
≤≤
≤ 0.6
µm
Cladding Non-Circularity
���
≤≤
≤ 1.0
%
Coating Diameter M49291/7-01 M49291/7-02
242 ±
±±
± 10 500 ± 15
µm
Coating Non-Circularity M49291/7-01 M49291/7-02
≤
≤≤
≤ 5 ≤
≤≤
≤ 5
%
Coating/Cladding Concentricity Error M49291/7-01 M49291/7-02
≤
≤≤
≤ 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
1
1 to 3 Not. Spec. N
Peak strip force, unaged and aged
1
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
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
Operating Temperature Range -46 to +85
C
Non-Operating + Storage Temperature Range -55 to +85
C
TYPICAL RADIATION INDUCED ATTENUATION (RIA)
Radiation Induced Attenuation
Dose: 10 KGy; Dose rate: 0.45 Gy/s; T=24 C;
1570 nm
~3 dB/100m
RadHard Single-Mode Fibre (MIL-PRF-49291/7)
Legacy radiation hardened SMF for irradiative environments
Product Type:
Legacy RadHard Single-Mode Fibre (MIL-PRF-49291/7)
Issue date: 10-2013
Coating Type: Dual Layer Primary Coating (DLPC9) Supersedes: 04-2013
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.