Abstract:Distributed Feedback (DFB) lasers that are widely used in high-speed communication nowadays usually use end-facet strategy coating in order to seek a balance between fabrication difficulty and device performance. This paper investigates DFB lasers with a partial grating structure that is immune to the phase uncertainties at the end-facet with high-reflection (HR) film and the improvement of its output chirp characteristics. It is found that, after parameter optimization, the carrier concentration and photon de… Show more
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