MIMO DWDM system using uncooled DFB lasers with adaptive laser bias control and postphotodetection crosstalk cancellation

Jiannan Zhu, Jonathan D. Ingham, Johannes Benedikt Von Lindeiner, Adrian Wonfor, Richard V. Penty, Ian H. White

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

A proof-of-principle demonstration of a multiple input-multiple output (MIMO) dense wavelength division multiplexing (DWDM) system is reported. It uses standard uncooled distributed feedback lasers with intensity modulation-direction detection (IM-DD), in which the temperature of each laser is allowed to drift independently within a 50 °C temperature range. A feedback-based laser bias control algorithm is introduced to guarantee acceptable wavelength spacing and a postphotodetection minimum mean square error decoder is applied to cancel the interchannel crosstalk. The relative sensitivity of the MIMO receiver in both a random laser temperature drift scenario and a worst-case scenario are investigated by simulations in MATLAB. Experimental results for a 40-channel × 12.5 Gb/s DWDM system transmitting over 28 km of single-mode fiber with worst possible wavelength distribution prove the feasibility of the technique.

Original languageEnglish
Article number6847154
Pages (from-to)3372-3379
Number of pages8
JournalJournal of Lightwave Technology
Volume32
Issue number21
Early online date1 Jul 2014
DOIs
Publication statusPublished - 1 Nov 2014

Keywords

  • Energy consumption
  • Multiple input multiple output
  • Wavelength division multiplexing

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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