FDMA-FSK Noncoherent Star Network Operated at 600 Mb/s Using Two-Electrode DFB Lasers and a Fiber Optical Filter Demultiplexer.

We demonstrate a two-channel FDMA-FSK star network using frequency- tunable two-electrode DFB lasers. Channels are demultiplexed by a tunable fiber Fabry-Perot filter, which also converts the FSK signal to ASK format for noncoherent detection. Bit- error-rates of 10 sup (-13) have been measured at 600 Mb/s transmission rate for (2 sup (23) -1) word lengths. High bit- rate and frequency tunability have thus been combined for use in an FDMA network.