BURST OPTICAL SIGNAL TRANSMISSION DEVICE AND CONTROL METHOD FOR BURST OPTICAL SIGNAL TRANSMISSION DEVICE

摘要

A bias point of an external modulator is set to different values according to on and off of a burst control signal and an optical source is driven continuously in a burst optical signal transmission device. The burst optical signal transmission device avoid generation of transient fluctuation of a wavelength and a light amount at the time of burst signal rising.

主权项

1. A burst optical signal transmission device comprising:
an optical source which outputs continuous light; an external modulator which modulates the continuous light from the optical source based on a burst control signal indicating to output or stop transmission signal data and burst signal light to output the burst signal light; and an external modulator driving circuit which changes a bias level of the external modulator each time when the burst signal light is output and time when the burst signal light is stopped based on the burst control signal.