Reduction of laser chirp in 1.5 ?m DFB lasers by modulation pulse shaping |
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| Authors: | Bickers L Westbrook LD |
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| Affiliation: | British Telecom Research Laboratories, Ipswich, UK; |
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| Abstract: | The dynamic linewidth of 1.5 ?m ridge waveguide DFB lasers is shown to be reduced by shaping the pulse of the laser modulating waveform. Pulse shaping is performed by a second-order network designed to cancel the small-signal laser resonance. Results demonstrate a dynamic linewidth reduction from 1.4 ? to 0.55 ? FWHM for a 500 ps pulse. |
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