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Discreteness in time

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Peschel U., Bersch C., Onishchukov G.

Open Physics

2008

vol. 6

issue 3

619-627

In this paper we discuss the joint propagation of a periodically modulated field and a pulse of different frequency in an optical fiber. The pulse experiences the action of an index lattice induced via cross-phase modulation by the periodic field. We predict effects of discreteness to show up both in the temporal and in the spatial domain. For large walk-off between the two fields one should observe Bloch oscillations in frequency space, where discrete diffraction is expected to occur for equal velocities of both waves.

Nonlinear wave interactions in patterned Silica and AlGaAs waveguides

100%

Linzon Y., Malomed B., Zaezjev M., Morandotti R., Volatier M., Aimez V., Ares R., Bar-Ad S.

Open Physics

2008

vol. 6

issue 3

555-562

We study nonlinear interactions between discrete optical solitons that propagate in different regimes of diffraction, and the nonlinear scattering of dispersive waves by local optical potentials. It is well known in optics that when linear coherent waves meet, they interfere without interactions. Linear waves also scatter through local optical structures not exchanging any power with the guided modes of these structures. As a focusing Kerr nonlinearity is present, such linearly-inhibited phenomena can exist. Our studies are performed in silica and AlGaAs nonlinear waveguides, excited by ultra-short pulses in the near infrared.

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2 Open Physics

2 2008

1 Aimez V.

1 Ares R.

1 Bar-Ad S.

1 Bersch C.

1 Linzon Y.

1 Malomed B.

1 Morandotti R.

1 Onishchukov G.

1 Peschel U.

1 Volatier M.

1 Zaezjev M.

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Discreteness in time

Nonlinear wave interactions in patterned Silica and AlGaAs waveguides