Generation and Detection of a 112-Gb/s Dual Polarization Signal Using a Directly Modulated Laser and Half-16-QAM Nyquist-Subcarrier-Modulation

• DOI: 10.1364/eceoc.2012.th.3.a.4
• Publication Date: 2013-04-05T21:34:09Z
• Authors: Abdullah S. Karar; John C. Cartledge
• Keywords: Nyquist–Shannon sampling theorem; QAM; Symbol rate; Modulation (music); Subcarrier multiplexing

A 56-Gb/s 16-QAM signal was generated using subcarrier modulation with a frequency of half the symbol rate, Nyquist pulse shaping, and directly modulated passive feedback laser. Using pre-amplified direct detection receiver digital processing, loss margin 12.6 dB achieved for 112-Gb/s dual polarization signal.