Kerr frequency comb generation in the normal dispersion regime of dispersion oscillating telecom fiber

The generation of optical frequency combs has a variety of applications from optical metrology to spectroscopy and wavelength division multiplexing. Nonlinear methods to generate frequency combs are based on multiple four-wave mixing (FWM) in highly nonlinear waveguides [1]. The mechanism for the generation of a wideband comb from a CW pump is Kerr-induced phase-matching of the FWM interaction or modulation instability (MI), which requires operating in the anomalous dispersion regime. Such restriction can be circumvented with a cavity geometry, where MI [2] and comb generation [3] may also be observed in the normal dispersion region. Alternatively, one may obtain MI and unequally spaced Ker…

Parabolic pulse generation with dispersion decreasing optical fiber

We experimentally demonstrate the possibility to generate parabolic pulses via a single dispersion decreasing optical fiber with normal dispersion. We numerically and experimentally outline the influence of the dispersion profile.

Parabolic pulse generation in dispersion decreasing fiber amplifier

We obtain an exact dispersion profile that permits for the analytical description of self-similar pulse amplification and supercontinuum generation in tapered nonlinear fiber amplifiers.

Spectral sideband splitting inn strongly dispersion oscillating fibers

Vidéo de la présentation donnée : https://youtu.be/SBA2WLKw5jw; International audience

Nonlinear parametric resonances in quasiperiodic dispersion oscillating fibers

We numerically study the evolution of the spectrum of parametric resonance or modulation instability sidebands in quasiperiodic dispersion oscillating fibers. We separately consider a linear variation along the fiber of either the spatial period, the average dispersion, or the amplitude of the dispersion oscillation. We found that this linear variation of the dispersion oscillating fiber parameters may provide different novel mechanisms for the splitting of the resonance sideband spectrum, owing to coherent interference between quasi-resonant waves that are generated at different points along the fiber. (C) 2015 Elsevier B.V. All rights reserved.

Les bandes de gain paramétrique dans une fibre à dispersion oscillante

National audience; Nous discuterons différents régimes de propagation où la forme et la complexité des bandes d’IM varient significativement. Nous présenterons notamment des résultats d’expériences menées aux longueurs d’ondes des télécommunications optiques. Enfin, nous exploiterons ce processus dans le cadre d’une d’une conversion de fréquence combinée à une compression temporelle d’un train d’impulsion à haut débit.

Instabilités optiques dans les fibres a dispersion oscillante

Wavelength conversion and temporal compression of a pulse train using a dispersion oscillating fiber

International audience; We demonstrate the generation of a picosecond pulse train taking advantage of the cross gain occurring in a dispersion oscillating fibre. The resulting frequency-converted signal is detuned by more than 20 nm from the pump and can be temporally compressed by a factor 2 compared to the input sinusoidal pump wave.

Experimental parabolic pulse generation with an active dispersion decreasing fiber

We experimentally demonstrate the use of an hybrid configuration to generate parabolic pulses. We combine dispersion decrease with distributed gain. This leads to several benefits on the parabolic generated pulses compared with a passive configuration.

Parabolic pulse generation with active or passive dispersion decreasing optical fibers

International audience; We experimentally demonstrate the possibility to generate parabolic pulses via a single dispersion decreasing optical fiber with normal dispersion. We numerically and experimentally investigate the influence of the dispersion profile, and we show that a hybrid configuration combining dispersion decrease and gain has several benefits on the parabolic generated pulses.