Phase-Sensitive Mode Conversion and Equalization in a Few Mode Fiber Through Parametric Interactions

The parametric interaction in few mode fibers is theoretically and numerically studied in the particular case in which the signal and the idler waves are frequency degenerate but mode nondegenerate. Under simplifying hypotheses, we derive analytical formulas for the phase-insensitive and phase-sensi...

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Bibliographic Details
Published in:IEEE photonics journal 2017-02, Vol.9 (1), p.1-10
Main Authors: Trichili, Abderrahmen, Zghal, Mourad, Palmieri, Luca, Santagiustina, Marco
Format: Article
Language:English
Subjects:
Analytical models
Couplings
fiber nonlinear optics
Frequency conversion
Gain
Mathematical model
Nonlinear optical devices
Numerical models
optical fiber devices
Probes
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Summary:The parametric interaction in few mode fibers is theoretically and numerically studied in the particular case in which the signal and the idler waves are frequency degenerate but mode nondegenerate. Under simplifying hypotheses, we derive analytical formulas for the phase-insensitive and phase-sensitive amplification gain and conversion efficiency. The analytical formulas are in very good agreement with the numerical solutions of a full vectorial model that takes into account losses, mode coupling, and all possible four-wave mixing interactions. In the phase-sensitive regime, we predict that for small input pump powers, a large and tunable phase-sensitive extinction ratio can be achieved on one mode, whereas the other mode power remains essentially unaffected. Finally, in the high-gain regime, the self-equalization of the output power on different modes can be also achieved.
ISSN:1943-0655
1943-0647
DOI:10.1109/JPHOT.2016.2644958