Directly modulated lasers in negative dispersion fiber links |
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| Authors: | P Krehlik |
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| Institution: | (1) Institute of Electronics, AGH University of Science and Technology, 30 Mickiewicza Ave., 30-059 Cracow, Poland |
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| Abstract: | In the paper the impact of frequency chirp of directly modulated lasers is considered in context of high-speed data transmission
over negative dispersion fiber. Chirp/dispersion induced signal distortions are described, and detailed investigations of
their influence on 10 Gb/s transmission system performance are presented. The desired laser chirp characteristics and optimal
driving conditions are determined. It is also demonstrated that directly modulated laser with low chirp offers similar or
even better dispersion tolerance than unchirped (externally modulated) source. Experimental verification of described investigations
is presented at the end. |
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| Keywords: | negative dispersion fiber laser frequency chirp laser direct modulation |
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