IEEE Photonics Journal (Jan 2016)

Transmission of 344 Gb/s 16-QAM Using a Simplified Coherent Receiver Based on Single-Ended Detection

  • Thang M. Hoang,
  • Mohammed Y. S. Sowailem,
  • Mohamed Morsy-Osman,
  • Mathieu Chagnon,
  • David Patel,
  • Stephane Paquet,
  • Carl Paquet,
  • Ian Woods,
  • Odile Liboiron-Ladouceur,
  • David Plant

DOI
https://doi.org/10.1109/JPHOT.2016.2574738
Journal volume & issue
Vol. 8, no. 3
pp. 1 – 8

Abstract

Read online

We demonstrate a single-wavelength, 344-Gb/s, 43-Gb 16-quadrature amplitude modulation (QAM) polarization division multiplexed signal transmission over 800 km operating below the hard-decision forward error correction (FEC) BER threshold of 3.8 × 10-3 using an InP dual-polarization in-phase/quadrature modulator. At the receiver, a simplified single-ended coherent receiver with novel digital signal processing (DSP) for self-beating noise removal is employed. Compared with the conventional single-ended detection, this signal processing method doubles the propagation distance and increases the SNR by more than 1 dB. In addition, this DSP method provides 10 dB of the received optical power dynamic range while operating below the hard-FEC BER threshold of 3.8 × 10-3, compared with the no dynamic range for a single-ended receiver without the proposed DSP.

Keywords