Unified direct and coherent orthogonal frequency division multiplexing optical transmission scheme

Stanley Johnson, Milorad Cvijetic

Research output: Contribution to journalArticle


We experimentally demonstrate a novel unified direct and coherent orthogonal frequency division multiplexing (OFDM) scheme. This self-coherent OFDM scheme simplifies receiver architecture and provides interchangeability between direct and coherent receivers using the same unified transmitter. We have experimentally verified the resilience of this scheme to fiber nonlinearities and achieved receiver sensitivity improvement of up to 1.73 dB as compared to the conventional intensity modulation and direct detection OFDM scheme. We have also verified the effectiveness of a dual-analyzer-based balanced detection scheme.

Original languageEnglish (US)
Pages (from-to)10606-10612
Number of pages7
JournalApplied Optics
Issue number36
Publication statusPublished - Dec 20 2015


ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this