Hiroyuki YOKOYAMA, Takanori SHIMIZU, Takashi ONO and Yutaka YANO

Opto-Electronics Research Laboratories, NEC Corporation, 34 Miyukigaoka, Tsukuba, 305 Japan

(Received November 21, 1994; Accepted January 10, 1995)

Synchronized mode-locking of monolithic mode-locked diode lasers has been demonstrated by injecting the light output from a master monolithic mode-locked diode laser. The master diode laser is a 10 GHz hybridly mode-locked two section InGaAsP quantum well laser. The slave lasers are a 10 GHz two section laser which is similar to the master laser, and a 20 GHz three section colliding pulse mode-locking laser. Both the slave lasers were greatly stabilized at 10 GHz frequency by a synchronous mode-locking mechanism under the injection of master laser pulses.

Key words : semiconductor laser, mode-locking, ultrashort light pulses, stabilization, ultrafast optical communication