Coherent detection of 565 Mbit/s DPSK data using semiconductor laser amplifier as phase modulator

摘要

Coherent optical detection and demodulation of DPSK data, impressed using a semiconductor laser amplifier as the phase modulator, has been demonstrated. When the amplifier was modulated by a pseudorandom bit sequence of length 2/sup 7/-1 at 565 Mbit/s, the received power was -39.1 dBm for a bit-error ratio of 10/sup -9/.