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A 4-Core Single-Mode Fiber Based Full Duplex Self-Homodyne Link for Coherent Data Center Interconnects

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posted on 13.05.2022, 15:48 authored by Aboobackkar SidhiqueAboobackkar Sidhique, Shekhar Saxena, Pramod Mishra, Shubham Roy, Arvind Mishra, Shalabh Gupta
We propose a coherent bidirectional link over a 4-core single-mode fiber for short-reach data center interconnects (DCIs). The proposed self-homodyne coherent link efficiently utilizes all the polarization and spatial modes in the fiber (by polarization multiplexing the carrier in two of the cores) to achieve a single-fiber full-duplex high capacity interconnect, while also providing the advantages of self-homodyning. For proof-of-the-concept, a single-lambda 13km bidirectional 40 Gbaud 16-QAM link, achieving 2×400 Gbps data rate (after 20% FEC overheads), is demonstrated. With wavelength division multiplexing and higher baud-rates, the approach can help meet the upcoming requirements for high-capacity DCIs.

History

Email Address of Submitting Author

aboobackkar@iitb.ac.in

ORCID of Submitting Author

https://orcid.org/ 0000-0002-7908-1231

Submitting Author's Institution

Indian Institute of Technology Bombay

Submitting Author's Country

India