Wavelength correlations in a fiber optical parametric oscillator

The recent emergence of real-time temporal and spectral characterization techniques such as time lenses [1] and dispersive Fourier transformation (DFT) [2] has opened new horizons by unveiling the shot-to-shot dynamics of ultrafast optical systems. Especially, the ability of DFT to record large ensembles of single-shot spectra has enabled the use of statistical metrics to describe the dynamical behaviours of various optical phenomena. In this frame, spectral correlations have been used for understanding the complex processes involved in supercontinuum generation, modulation instability, four-wave mixing or random lasing. The shaping of spectral correlations has been experimentally demonstrated in fiber systems [3] , [4] and could now drive many quantum optics applications. However, to date, such wavelengths correlations have never been studied within fiber optical parametric oscillators (FOPO), which are now mature and widespread wavelength-agile sources.