Title :
Direct modulation bandwidth enhancement of strongly injection-locked SG-DBR laser
Author :
Bhardwaj, Arpit ; Ristic, Sonja ; Johansson, Leif A. ; Althouse, C. ; Coldren, Larry A.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of California, Santa Barbara, CA, USA
Abstract :
Significant enhancement in the direct amplitude modulation bandwidth of an SG-DBR laser has been demonstrated under strong injection-locking conditions, where the wavelength detuning between the master and the free-running SG-DBR slave laser is varied from -8.58 to 13.6 nm. It is demonstrated that the relaxation resonance frequency of a strongly injection-locked SG-DBR laser increases from 1.05 GHz for the free-running case to over 20 GHz.
Keywords :
diffraction gratings; distributed Bragg reflector lasers; optical modulation; direct modulation bandwidth enhancement; frequency 1.05 GHz; injection-locking; relaxation resonance frequency; sampled grating-distributed Bragg reflector lasers; slave laser; wavelength detuning;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2010.0264
