Lasers in fiber optic communication

Question

Which of the following CANNOT be used for fiber optic communication:

Choices (Laser type/wavelength, nm)

Argon fluoride (UV) 193

Krypton fluoride (UV) 248

Xenon chloride (UV) 308

Nitrogen (UV) 337

Argon (blue) 488

Argon (green) 514

Helium neon (green) 543

Helium neon (red) 633

Rhodamine 6G dye (tunable) 570-650

Ruby (CrAlO3) (red) 694

Nd:Yag (NIR) 1064

Carbon dioxide (FIR) 10600

Answer 1

You could use nearly them all depending on the length of the fibre ;-)!  The attenuation in dB per Km is heavily wavelength dependant, i suspect the C02 laser would be pretty useless with standard fibres.