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An optimal design of sampled grating structure for dual mode signal generation

In this paper, we present a new semiconductor laser design used for dual mode signal generation. This new design is based on sampled grating structures which have been mainly used, up to now, for tuneable laser applications. We will report the main theoretical design aspects of that structure and present simulation results using the Time Domain Model (TDM). We will also spot on the coupling coefficient effect on the mode spacing and point out an optimal coupling coefficient value. The elected structure is single section, single electrode and needs only one DC current.