Rayleigh noise mitigation using single-sideband modulation generated by a dual-parallel MZM for carrier distributed PON

C. H. Wang, Chi-Wai Chow, C. H. Yeh, C. L. Wu, S. Chi, Chinlon Lin

Research output: Contribution to journalArticlepeer-review

45 Scopus citations

Abstract

Hybrid passive optical networks (PONs) with a centralized light source (CLS) could be a promising solution for the next-generation PON. However, the network with a loop-back architecture will give rise to interferometric noise caused by Rayleigh backscattering (RB). Here, we propose and demonstrate a colorless optical networking unit (ONU) using a dual-parallel MachZehnder modulator (DP-MZM) to mitigate RB noise in a hybrid wavelength-division- multiplexingtime-division-multiplexing PON with CLS. Both dominant contributions of RB, carrier RB and signal RB, are experimentally characterized, for the first time, when using a DP-MZM as a reflective ONU. In addition, the split-ratio of a long-reach PON using the DP-MZM-based ONU is also investigated and analyzed, showing RB noise can be efficiently reduced.

Original languageEnglish
Article number5443567
Pages (from-to)820-822
Number of pages3
JournalIEEE Photonics Technology Letters
Volume22
Issue number11
DOIs
StatePublished - 19 May 2010

Keywords

  • Hybrid passive optical networks (PONs)
  • Rayleigh backscattering (RB)
  • Single sideband (SSB)

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