LASER DIODE HAVING AN ABRUPT TURN-ON, OPTICAL TRANSMITTER DEVICE USING THE SAME LASER DIODE AND OPTICAL COMMUNICATION APPARATUS

摘要

A laser diode having an abrupt turn-on characteristic, an optical transmitting device using the same, and an optical communication device using the same are provided to obtain enough optical output and a low power RF(Radio Frequency) operation characteristic based on a high on/off extinction ratio. A laser diode having an abrupt turn-on characteristic includes an active area(Aact), and an absorbing area(Aab). The active area generates laser light by the application of current, and controls a gain. The absorbing area absorbs the optical power generated at the laser diode in the current lower than the abrupt threshold current below the operation current which generates the target optical power required in the laser diode. The laser diode absorbs the optical power at the absorbing area by using an optical device having an absorbing function.