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Optica Publishing Group
  • Journal of Lightwave Technology
  • Vol. 37,
  • Issue 1,
  • pp. 110-115
  • (2019)

A 128 Gb/s PAM4 Silicon Microring Modulator With Integrated Thermo-Optic Resonance Tuning

Open Access Open Access

Abstract

We report the first demonstration of a silicon photonic microring modulator with modulation data rate up to 128 Gb/s (64 Gbaud PAM4). The microring modulator exhibits an electro-optic phase efficiency of V $_\pi \cdot$ L = 0.52 V $\cdot$ cm, an electro-optic bandwidth of 50 GHz, and a measured transmitter dispersion eye closure quaternary of 3.0 dB at this data rate. In addition, the resonant wavelength of the microring modulator can be tuned across a full free spectral range using an integrated heater with a thermo-optic phase efficiency of 19.5 mW $/\pi$ -phase shift.

© 2018 OAPA

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