EXPERIMENTAL PSK ASK TRANSCEIVER FOR THE STARNET-WDM COMPUTER-COMMUNICATION NETWORK

STARNET is an optical wavelength-division multiplexed computer communi cation network that offers each user both a circuit-switched subnetwor k and a packet-switched subnetwork. We constructed an experimental STA RNET node transceiver. The transceiver uses one integrated phase and a mplitude modulator to transmit 125 Mb/s amplitude-modulated packet-swi tched data and 2.488 Gb/s phase-modulated circuit-switched data using the same lightwave. The transmitter has an output power of 5 dBm at 1. 32 mum. The receiver recovers the circuit-switched and packet-switched data using heterodyne detection and has a sensitivity of -25 dBm. The resulting system power budget is 30 dB.