Theoretical analysis of tuning properties for a phase-tunable DFBlaser |
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Authors: | Olesen H. Pan X. Tromborg B. |
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Affiliation: | Telecommun. Res. Lab., Horsholm; |
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Abstract: | The device consists of a conventional or a λ/4-shifted DFB (distributed-feedback) laser monolithically integrated with an external waveguide section with separate electrodes for phase control. Tuning curves are presented for threshold current, frequency, linewidth, and output power. The analysis demonstrates a generally higher side mode suppression and larger frequency tuning range but also a larger linewidth for the λ/4-shifted device compared to the device with a conventional DFB section |
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