FREQUENCY CHANGING OF LIGHT SIGNALS

摘要

A source light signal (6) is inputted to a self-pulsating laser diode (2). A frequency (fundamental or harmonic) of the diode (2) is matched with a frequency (fundamental or harmonic) of the source light signal (6). The resulting output light signal (7) from the laser diode (2) is at the fundamental frequency of the self-pulsation. Accordingly, depending on the choice of matching of the harmonic and fundamental frequencies of the source light signal and the laser diode, synchronised frequency division or multiplication can occur.