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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)