A 45nm SOI monolithic photonics chip-to-chip link with bit-statistics-based resonant microring thermal tuning

1 June 2015

conference paper
Published by Institute of Electrical and Electronics Engineers (IEEE)

No. 21585601,p. C122-C123
https://doi.org/10.1109/vlsic.2015.7231348

Abstract

A new thermal tuning circuit for optical ring modulators enables demonstration of an optical chip-to-chip link for the first time with monolithically integrated photonic devices in a commercial 45nm SOI process, without any process changes. The tuning circuit uses independent 1/0 level-tracking and 1/0 bit counting to remain resilient against laser self-heating transients caused by non-DC-balanced transmit data. A 30fJ/bit transmitter and 374fJ/bit receiver with 6μA _pk-pk photocurrent sensitivity complete the 5Gb/s link. The thermal tuner consumes 275fJ/bit and achieves a 600 GHz tuning range with a heater tuning efficiency of 3.8μW/GHz.

Keywords

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