1 Gb/s BPSK Transmission at 850 nm over 1 km of 62.5 micron-core Multimode Fiber Using a Single 2.5 GHz Subcarrier

We report the first single-channel subcarrier-based optical transmission of 1 Gb/s data over 1 km of standard 62.5 micron-core graded-index multimode fiber. We employ a 2.5 GHz subcarrier modulated by binary phase shift keying (BPSK). The BPSK-encoded subcarrier directly modulates a proton-implanted 850 nm vertical cavity surface emitting laser biased to 12 mA. Three different 1 km fiber links are demonstrated. Transmission penalties range between 6.6 and 12 dB. We present present bit error rate data, eye patterns, and rf spectra.