The attenuation in fibers used for wavelengths below 1550 nm is dominated by Rayleigh scattering. For wavelengths below 600 nm, UV absorption becomes more relevant. The attenuation is approximately 1 dB/km for l= 1000 nm. With decreasing wavelength, the attenuation increases to approximately 20 dB/km for λ = 460 nm and to approximately 40 dB/km for λ = 400 nm.
When using standard fibers at wavelengths below 460 nm, additional solarization effects worsen the attenuation further.
Schäfter+Kirchhoff offer pure silica core fiber cables in order to increase fiber performance at lower wavelengths.
Attenuation of single-mode and polarization-maintaining fibers depending on wavelength.
Attenuation of single-mode and polarization-maintaining fibers for different fiber types depending on fiber length