Frequency chirp reduction in a 2.2 Gbit/s directly modulated InGaAsP semiconductor laser by CW injection
- 17 January 1985
- journal article
- Published by Institution of Engineering and Technology (IET) in Electronics Letters
- Vol. 21 (2) , 80-81
- https://doi.org/10.1049/el:19850055
Abstract
Longitudinal-mode linewidth broadening due to frequency chirping in a high-speed modulated InGaAsP laser transmitter is reduced by CW injection of a master laser with a matched longitudinal mode. Biased below threshold and modulated with RZ format 2.2 Gbit/s current pulses, the transmitter laser's frequency chirp can be reduced at the expense of a small pulsewidth increase and on/off ratio reduction.Keywords
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