15.6-Gb/s transmission over 1 km of next generation multimode fiber

In this letter, we report on a 15.6-Gb/s transmission over 1 km of next generation multimode fiber. The short wavelength vertical-cavity surface-emitting laser (VCSEL) transmitter module used a SiGe bipolar VCSEL driver. The multimode fiber was almost ideal and had a total differential mode delay width of only 0.056 ps/m. We also achieved 20-Gb/s transmission over 200 m.