High performance 1.3 um lasers and LEDs have been developed for optical communications systems. The lasers exhibit low threshold currents, excellent high speed and spectral characteristics, and high reliability. The surface emitting LEDs provide launched powers greater than -15 dBm into 62.5 um core fiber with rise and fall times suitable for operation to 220 Mb/s.
R. J. Nelson, R. J. Nelson,
"High Performance Lasers and LEDs for Optical Communication", Proc. SPIE 0722, Components for Fiber Optic Applications, (14 January 1987); doi: 10.1117/12.937675; https://doi.org/10.1117/12.937675