Single-Mode Bend Insensitive Radiation Hardened Fibers
These pure silica core S1550-HTA fibers are single-mode fibers designed to be bend insensitive and withstand extreme
pulsed and continuous ionizing radiation. They have high proof strength, large Weibull modulus, and superior dynamic
fatigue parameter to maintain high mechanical reliability (long lifetimes). Available in both 125 and 80 µm clad diameters,
they are ideally suited for special sensor applications or applications requiring coils. These fibers feature high temperature
acrylate as standard coating to meet the challenges of the harsh tactical, avionics/aerospace, missile and UAV working
environments.
Typical Applications
• Airframe, Spacecraft, Missile and
UAV optical interconnects
• Large bandwidth tactical cables
• Miniature fiber optic packages
Features & Benefits
• Exceptional uniformity and core/clad concentricity — Low connectorization losses
• High proof test level, high Weibull modulus and high dynamic fatigue parameter — Long lifetimes in deployment
conditions
• Bend insensitive — Survives application in tight confines
• Rad resistant & rad hard — Useful in radiation environments
Optical Specifications
S1550-HTA
S1550-80-HTA
Operating Wavelength
1520 – 1630 nm
1520 – 1630 nm
Core NA
0.160
0.160
Mode Field Diameter
7.0 ± 1.0 µm @ 1550 nm
7.5 ± 0.8 µm @ 1550 nm
Cutoff
1450 ± 70 nm
1450 ± 70 nm
Core Attenuation
≤ 1.0 dB/km @ 1550 nm
≤ 1.0 dB/km @ 1550 nm
Geometrical & Mechanical
Specifications
Cladding Diameter
125.0 ± 1.0 µm
80 ± 2 µm
Core Diameter
7.8 µm
7.8 µm
Coating Diameter
245.0 ± 15.0 µm
125.0 ± 5.0 µm
Coating Concentricity
< 5.0 µm
< 5.0 µm
Core/Clad Offset
≤ 0.50 µm
≤ 0.50 µm
Coating Material
High Temperature Acrylate
High Temperature Acrylate
Operating Temperature Range
-55 to 125 °C
-55 to 125 °C
Short Term Bend Radius
≥ 12 mm
≥ 8 mm
Long Term Bend Radius
≥ 25 mm
≥ 16 mm
Prooftest Level
≥ 100 kpsi (0.7 GN/m²)
≥ 100 kpsi (0.7 GN/m²)
