Title :
Locking range of a hybrid mode-locked monolithic DBR semiconductor laser at millimeter-wave frequencies
Author :
Novak, Dalma ; Kim, Dug Y. ; Liu, Hai-Feng ; Ahmed, Zaheer ; Ogawa, Yoh
Author_Institution :
Dept. of Electr. & Electron. Eng., Melbourne Univ., Parkville, Vic., Australia
fDate :
9/1/1996 12:00:00 AM
Abstract :
We present the first investigation of the detuning characteristics at 33 GHz of a hybrid mode-locked monolithic distributed Bragg reflector semiconductor laser. Hybrid modelocking is achieved by applying a radio-frequency (RF) signal, at a frequency corresponding to the fundamental laser repetition frequency, to the saturable absorber of the passively mode-locked laser. Measurements show a 3-dB locking range greater than 40 MHz with an applied external RF signal power of 0 dBm. At this power level, the laser beat signal exhibited phase-noise less than -78 dBc/Hz and -93 dBc/Hz at 10 kHz and 5 MHz offsets, respectively
Keywords :
distributed Bragg reflector lasers; integrated optics; laser beam applications; laser mode locking; laser noise; laser tuning; millimetre wave generation; optical modulation; optical saturable absorption; optical transmitters; phase noise; semiconductor lasers; 33 GHz; EHF; detuning characteristics; distributed Bragg reflector laser; fundamental laser repetition frequency; hybrid mode-locked laser; locking range; millimeter-wave frequencies; monolithic DBR semiconductor laser; passively mode-locked laser; radiofrequency signal; saturable absorber; Distributed Bragg reflectors; Frequency; Laser mode locking; Phase control; Phase detection; Power lasers; Power measurement; RF signals; Semiconductor lasers; Signal detection;
Journal_Title :
Microwave and Guided Wave Letters, IEEE
