Question

Glass fibers have a minimum loss window for light transmission at 1.3 um and 1.55 um. These wavelengths determine the laser materials of choice for long distance optical communication. (a) List the various semiconductor combinations that can be used for lasers and detectors in such a system. (b) List only those materials that can be grown on GaAs and InP substrates with a strain of less than 1.5%. Using the virtual crystal approximation, estimate the electron effective masses of these materials.

Answer 1