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Polarization Maintaining
Fiber |
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CNI's industry visible and short wavelength Polarization
Maintaining fibers have superior waveguide, radiation, and
mechanical properties enabling a large variety of new critical
applications in diverse markets. High consistency and extreme
end-to-end control of optical properties provide particular
advantage in spectrographic and frequency sensitive applications.
The intrinsically high level of radiation resistance allows this
family to operate for extended periods of time on low earth orbits,
near and deep space, and in applications where risk of exposure to
man-made radiation is good. |
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Optical Specifications |
Operating Wavelength (nominal) |
460–630 nm |
Mode Field Diameter |
3.3 ± 0.5 µm @ 515 nm (1/e² fit - near field) |
Second Mode Cut-Off |
410 ± 40 nm |
Attenuation |
≤ 100 dB/km @ 488 nm |
Beat Length (nominal) |
1.3 mm @ 460 nm |
Birefringence (nominal) |
3.5 x 10-4 |
Geometrical & Mechanical Specifications |
Clad Diameter |
125.0 ± 1.0 µm |
Coating Diameter |
245 ± 15 µm |
Core-Clad Concentricity |
< 0.5 µm |
Coating/Clad Offset |
≤ 5 µm |
Coating Material |
UV Cured, Dual Acrylate |
Operating Temperature |
-40 to +85 °C |
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Optical Specifications |
Operating Wavelength
(nominal) |
630–780 nm |
Mode Field Diameter |
4.5 ± 0.5 µm @ 630 nm (1/e²
fit - near field) |
Second Mode Cut-Off |
570 ± 50 nm |
Attenuation |
≤ 12 dB/km @ 630 nm |
Beat Length (nominal) |
1.8 mm @ 630 nm |
Birefringence (nominal) |
3.5 x 10-4 |
Geometrical & Mechanical
Specifications |
Clad Diameter |
125.0 ± 1.0 µm |
Coating Diameter |
245 ± 15 µm |
Core-Clad Concentricity |
< 0.5 µm |
Coating/Clad Offset |
≤ 5 µm |
Coating Material |
UV Cured. Dual Acrylate |
Operating Temperature |
-40 to +85 °C |
Proof Test Level |
≥ 200 kpsi (1.4 GN/m²) |
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