Wavelength Shifting of a 21.4-Gbaud, 16QAM Signal using Highly-Nonlinear Silica Fiber
06 May 2012
Longitudinal stress reduced the stimulated-Brillouin-scattering threshold in a highlynonlinear-silica-fiber parametric amplifier, allowing ditherless pumping. This enabled phase conjugation and frequency shifting of a 21.4-Gbaud, 16QAM signal with less than 0.6-dB penalty. OCIS codes: (060.4264) Networks, wavelength assignment; (190.4380) Nonlinear optics, four-wave mixing; (060.4370) Nonlinear optics, fibers