METHOD OF DRIVING SEMICONDUCTOR LASER WITH WIDE MODULATION BAND, OPTICAL COMMUNICATION METHOD, SEMICONDUCTOR LASER DEVICE, NODE, AND OPTICAL COMMUNICATION SYSTEM

摘要

This invention discloses the following. Twomodulation currents are injected into differentelectrodes of a semiconductor laser having a pluralityof electrodes. The relationship between the phases ofthe two modulation currents is so adjusted that anoutput waveform is not distorted especially when amodulation frequency is low. Polarization modulationis applied as the modulation form.