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Locking range of a hybrid mode-locked monolithic DBR semiconductor laser at millimeter-wave frequencies

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5 Author(s)
Novak, D. ; Dept. of Electr. & Electron. Eng., Melbourne Univ., Parkville, Vic., Australia ; Kim, Dug Y. ; Hai-Feng Liu ; Ahmed, Z.
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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

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Microwave and Guided Wave Letters, IEEE  (Volume:6 ,  Issue: 9 )