High-speed and low-power optical DAC transmitter using all-silicon lumped segmented modulator directly driven by CMOS inverter driver.

Yohei Sobu,Yukito Tsunoda,Toshihiko Mori,Guoxiu Huang,Takuji Yamamoto,Shinsuke Tanaka,Takeshi Hoshida

Optical Fiber Communications Conference and Exhibition（2024）

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摘要

We fabricated a 2×2-bit optical DAC transmitter using silicon segmented modulators and CMOS drivers. Highest symbol rates of 56Gbaud PAM4 and 50Gbaud 16QAM were achieved with transmitter density higher than 300Gbps/mm ² among optical DAC transmitters.

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关键词

Analog-to-digital Converter,Optical Transmittance,Symbol Rate,Power Consumption,Phase Shift,Printed Circuit Board,Power Efficiency,Keysight,Forward Bias,Digital Oscilloscope,Bias Current,Least Significant Bit,Most Significant Bit,Pulse Amplitude Modulation,Extinction Ratio,Coherent Mode,Quadrature Amplitude Modulation,Modulation Formats,Flip-chip,High-speed Signal

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