Impact of Damping on 50 Gbps 4-PAM Modulation of 25G Class VCSELs

Tamás Lengyel,Krzysztof Szczerba,Emanuel P. Haglund,Petter Westbergh,Magnus Karlsson,Anders Larsson,Peter A. Andrekson

Journal of Lightwave Technology（2017）

引用 20|浏览11

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摘要

We present an investigation into the effects of photon lifetime and the associated damping of the modulation response on 50 Gbps 4-pulse-amplitude modulation (4-PAM) signal generation with directly modulated 25G class vertical-cavity surface-emitting lasers (VCSELs). While 4-PAM benefits from higher slope efficiency and output power, it is shown that the greater impact of intensity noise and dynam...

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关键词

Vertical cavity surface emitting lasers,Modulation,Photonics,Sensitivity,Bandwidth,Damping,Distributed Bragg reflectors

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