Capacity limits of systems employing multiple optical phase conjugators

A.D. Ellis, M.E. Mccarthy, M.A.Z. Al-khateeb, S. Sygletos

Research output: Contribution to journalArticlepeer-review


We extend the theory of parametric noise amplification to the case of transmission systems employing multiple optical phase conjugators, demonstrating that the excess noise due to this process may be reduced in direct proportion to the number of phase conjugation devices employed. We further identify that the optimum noise suppression is achieved for an odd number of phase conjugators, and that the noise may be further suppressed by up to 3dB by partial digital back propagation (or fractional spans at the ends of the links).
Original languageEnglish
Pages (from-to)20381-20393
Number of pages13
JournalOptics Express
Issue number16
Publication statusPublished - 27 Jul 2015

Bibliographical note

Funding: Royal Society (WM120035); and EPSRC (EP/L000091/1; EP/J01758)


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