Abstract

Spectral inversion based on four-wave mixing (FWM) is one of the promising techniques to compensate for the temporal and spectral distortion of the optical signals caused by chromatic dispersion and optical nonlinearities in optical fiber communications^1–3. In previous reports employing waveguide FWM devices^2,3, wavelength-shift of the spectrally-inverted FWM wave from the input signal wave was considered to be inevitable³ in order to separate the FWM wave from the input waves with optical filtering. Recently, we proposed a novel FWM configuration that separates the generated FWM wave from the input signal and pump waves without optical filtering^4,5. In this report, we present spectral inversion without wavelength shift using non-degenerate pump waves in the proposed configuration named the optical PArametric Loop Mirror (PALM).

© 1995 Optical Society of America