Experimental investigation of the impact of optical injection on vital parameters of a gain-switched pulse source
Guignard, Celine, Anandarajah, Prince M.ORCID: 0000-0001-7335-8044, Clarke, Aisling M., Barry, Liam P.ORCID: 0000-0001-8366-4790, Vaudel, O. and Besnard, PascalORCID: 0000-0003-3937-7035
(2007)
Experimental investigation of the impact of optical injection on vital parameters of a gain-switched pulse source.
Optics Communications, 277
(1).
pp. 150-155.
ISSN 0030-4018
An analysis of optical injection on a gain-switched distributed feedback (DFB) laser and its impact on pulse parameters that influence the performance of the pulse source in high-speed optical communication systems is presented in this paper. A range of 10 GHz in detuning and 5 dB in injected power has been experimentally identified to attain pulses, from an optically injected gain-switched DFB laser, with durations below 10 ps and pedestal suppression higher than 35 dB. These pulse features are associated with a side mode suppression ratio of about 30 dB and a timing jitter of less than 1 ps. This demonstrates the feasibility of using optical injection in conjunction with appropriate pulse compression schemes for developing an optimized and cost-efficient pulse source, based on a gain-switched DFB laser, for high-speed photonic systems.