title: Phase discrimination and simultaneous frequency conversion of the orthogonal components of an optical signal by four-wave mixing in an SOA.
abstract: Simultaneous conversion of the two orthogonal phase components of an optical input to different output frequencies has been demonstrated by simulation and experiment. A single stage of four-wave mixing between the input signal and four pumps derived from a frequency comb was employed. The nonlinear device was a semiconductor optical amplifier, which provided overall signal gain and sufficient contrast for phase sensitive signal processing. The decomposition of a quadrature phase-shift keyed signal into a pair of binary phase-shift keyed outputs at different frequencies was also demonstrated by simulation.
authors: Tyndall National Institute & Department of Physics, University College Cork, Lee Maltings, Cork, Ireland. rod.webb@tyndall.ie
authors: R P
authors: RP
authors: Webb
authors: J M
authors: JM
authors: Dailey
authors: R J
authors: RJ
authors: Manning
authors: A D
authors: AD
authors: Ellis