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Article Dans Une Revue Optics Express Année : 2019

DAC-less PAM-4 generation in the O-band using a silicon Mach-Zehnder modulator

Résumé

We demonstrate 20-Gb/s 4-level pulse amplitude modulation (PAM-4) signal generation using a silicon Mach-Zehnder modulator (MZM) in the O-band. The modulator is driven by two independent binary streams, and the PAM-4 signal is thus generated directly on the chip, avoiding the use of power-hungry digital-to-analog converters (DACs). With optimized amplitude levels of the binary signals applied to the two arms of the MZM, a pre-forward error correction (FEC) bit-error rate (BER) as low as 7.6 × 10 −7 is obtained. In comparison with a commercially available LiNbO 3 modulator, the penalty is only 2 dB at the KP4 FEC threshold of 2.2 × 10 −4 .
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Dates et versions

hal-02270915 , version 1 (27-08-2019)

Identifiants

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Lucas Deniel, Mathilde Gay, Diego Pérez Galacho, Charles Baudot, Laurent Bramerie, et al.. DAC-less PAM-4 generation in the O-band using a silicon Mach-Zehnder modulator. Optics Express, 2019, 27 (7), pp.9740-9748. ⟨10.1364/OE.27.009740⟩. ⟨hal-02270915⟩
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