Abstract
This paper investigates co-design of a broadband RF low-noise driver for silicon photonic (SiP) Mach-Zehnder modulators (MZM). The frequency response of SiP modulators demonstrates significant spur-free dynamic range (SFDR) reduction in microwave bands due to a reduction in the linearity and noise figure of the modulator. A low-noise distributed driver circuit is proposed in a 0.13µm SiGe process for the SiP modulator. The driver consists of a broadband LNA, an active balun, and a high-voltage swing driver. The MZM is fabricated in a 65-nm Silicon Photonic (SiP) process. The RoF transmitter achieves a 1-20 GHz bandwidth and an SFDR of 109 dB•Hz2/3 at 7 GHz and 11 GHz.
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