Suppression of Stimulated Brillouin Scattering in Highly Nonlinear Fiber by Temperature Tuning Without Adverse Effect on Zero-Dispersion Wavelength Distribution

We experimentally demonstrate suppression of stimulated Brillouin scattering (SBS) in highly nonlinear fiber (HNLF) using temperature-based detuning of the SBS shift frequencies of individual fiber segments while simultaneously aligning their zero-dispersion wavelengths (ZDWs). This is enabled by the characterization of temperature dependence of SBS shift frequencies and ZDWs for the HNLF segments. As a result, the product of SBS threshold and fiber length has been increased by at least 5.8 dB, and wavelength conversion efficiency has been increased by more than 10 dB using a continuous-wave pump in a wavelength converter based on optical parametric amplification.