Intermodal Four-Wave-Mixing and Parametric Amplification in km-long Fibers

Abstract

We theoretically and numerically investigate intermodal four-wave-mixing in km-long fibers, where random birefringence fluctuations are present along the fiber length. We identify several distinct regimes that depend on the relative magnitude between the length scale of the random fluctuations and the beat-lengths of the interacting quasi-degenerate modes. In addition, we analyze the impact of polarization mode-dispersion and we demonstrate that random variations of the core radius, which are typically encountered during the drawing stage of the fiber, can represent the major source of bandwidth impairment. These results set a boundary on the limits of validity of the classical Manakov model and may be useful for the design of multimode parametric amplifiers and wavelength converters, as well as for the analysis of nonlinear impairments in long-haul spatial division multiplexed transmission.

References in corpus (5)

• Space Division Multiplexing in Optical Fibres
• Nonlinear Propagation in Multimode and Multicore Fibers: Generalization of the Manakov Equations
• Nonlinear propagation in multi-mode fibers in the strong coupling regime
• Soliton trapping in multimode fibers with random mode coupling
• Theory of Polarization Attraction in Parametric Amplifiers Based on Telecommunication Fibers

Cited by in corpus (3)

• Multimode Nonlinear Fiber Optics: Massively Parallel Numerical Solver, Tutorial and Outlook
• Spatially multiplexed picosecond pulse-train generations through simultaneous intra-modal four wave mixing and inter-modal cross-phase modulation
• Multiple spatial and wavelength conversion operations based on a frequency-degenerated intermodal four-wave-mixing process in a graded-index 6-LP few mode fiber