Cryogenic C-band wavelength division multiplexing system using an AIM Photonics Foundry process design kit

Erfan M. Fard, Christopher M. Long, Anthony L. Lentine, Robert A. Norwood

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Cryogenic environments make superconducting computing possible by reducing thermal noise, electrical resistance and heat dissipation. Heat generated by the electronics and thermal conductivity of electrical transmission lines to the outside world constitute two main sources of thermal load in such systems. As a result, higher data rates require additional transmission lines which come at an increasingly higher cooling power cost. Hybrid or monolithic integration of silicon photonics with the electronics can be the key to higher data rates and lower power costs in these systems. We present a 4-channel wavelength division multiplexing photonic integrated circuit (PIC) built from modulators in the AIM Photonics process development kit (PDK) that operate at 25 Gbps at room temperature and 10 Gbps at 40 K. We further demonstrate 2-channel operation for 20 Gbps aggregate data rate at 40 K using two different modulators/wavelengths, with the potential for higher aggregate bit rates by utilizing additional channels.

Original languageEnglish (US)
Pages (from-to)35651-35662
Number of pages12
JournalOptics Express
Volume28
Issue number24
DOIs
StatePublished - Nov 23 2020

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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