The O-band amplifier utilizes rare earth metals doped in optical fiber as the amplification medium. The fibers are similar to those used for amplification in the C and L bands, but the O-band transmission over SMF results in higher light attenuation due to higher Rayleigh scattering. In-house O-band amplifier networks are a long-term objective for advancing optical communication. Simple optical fiber networks, such as polymer optical fiber, could provide network services effectively in homes and offices. The transmission of radio signals over polymer optical fiber has already been devised and tested.