Wavelength Translation Across 210 nm in the Visible Using Vector Bragg Scattering in a Birefringent Photonic Crystal Fiber

Wideband optical wavelength translation across a record range from the near-infrared to the visible based on the Bragg scattering four-wave-mixing process has been demonstrated in birefringent photonic crystal fiber. The process was vectorial in nature, where the pumps and the signal and idler fields were polarized on orthogonal axes. Bragg scattering is a theoretically noiseless process (and thus is termed translation), although the signal and idler channels are often contaminated by Raman generated by the pumps. Vector Bragg scattering has the potential to be less contaminated by Raman noise than scalar (copolarized) Bragg scattering.