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Proceedings Paper

56 Gbaud PAM4 real time optical Datacom link
Author(s): John Pertessis; Shubhashish Datta; Abhay Joshi
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Paper Abstract

We present a Forward Error Correction (FEC) - assisted, 56 Gbaud PAM4 optical link having error free performance with adequate link margin of better than 6 dB. The link was formed by driving a 1550 nm Externally Modulated Laser (EML) with a commercial PAM4 transceiver chip. The optical signal was transmitted over various link lengths of dispersion compensated fiber, fed to a low-noise Linear InGaAs Photoreceiver having Automatic Gain Control (AGC), and routed back to the PAM4 transceiver chip with ADC & DSP capability. Real time bit error rate measurements demonstrate the advantage of employing linear receivers having AGC.

Paper Details

Date Published: 27 February 2020
PDF: 9 pages
Proc. SPIE 11308, Metro and Data Center Optical Networks and Short-Reach Links III, 113080B (27 February 2020); doi: 10.1117/12.2546767
Show Author Affiliations
John Pertessis, Discovery Semiconductors, Inc. (United States)
Shubhashish Datta, Discovery Semiconductors, Inc. (United States)
Abhay Joshi, Discovery Semiconductors, Inc. (United States)


Published in SPIE Proceedings Vol. 11308:
Metro and Data Center Optical Networks and Short-Reach Links III
Atul K. Srivastava; Madeleine Glick; Youichi Akasaka, Editor(s)

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