re: Here you go
There are many LEDs in the IR region of the spectrum. Originally,back in the 80s and early 90s telecommunications and fiber optic LANs used 850nm LEDs then moved to 1310nm, both in the IR region. Each LED's output is a function of the elements used in their fabrication. Nowadays most everthing is lasers, cheap, easy to fabricate and their tight spectra makes them less susceptable to dispersion as the signal travels down the fiber optic waveguide.
RL's wavelength example was for newer, visible spectra LEDs.