MULTI-CARRIER GENERATING DEVICE, OPTICAL TRANSMITTER AND MULTI-CARRIER GENERATING METHOD

摘要

A multi-carrier generating device (1) is provided, which includes: a first MZM (300), a second MZM (400), an electrical splitter (100) and a phase shifter (200), wherein, the electrical splitter splits a clock driving signal (2) into two branches, the first clock driving signal is outputted to the first MZM, the second clock driving signal is outputted to the phase shifter, the phase shifter performs phase shifting to said second clock driving signal and outputs it to the second MZM; the first MZM modulates an optical carrier signal (3) under the driving of the first clock driving signal, and outputs the modulated optical carrier signal to the second MZM, the second MZM modulates the modulated optical carrier signal outputted from the first MZM under the driving of the second clock driving signal which is processed by the phase shifter, and outputs the multi-carrier signal (4). The present invention also provides an optical transmitter and a multi-carrier generating method, which can generate carriers of different quantity and different frequency interval.