We describe a quite general and accurate approach for determining the dispersion equation of TE-polarized modes propagating in planar graded-index waveguides bounded on one side by a self-focusing nonlinear cover with finite thickness. The proposed structure appears to be appropriate for wavelength converters based on a four-wave mixing process. The dependence of the guided power flow along the proposed four-layered structure (which is different from others previously published) on the refractive-index profile parameters is investigated. The validity of the reported numerical results is confirmed by the beam-propagation-method simulation. Moreover, a particular waveguide configuration is described, one especially designed to maximize the power confinement in the nonlinear medium.

Propagation characteristics of nonlinear graded-index optical waveguides / De Sario, M.; D’Orazio, A.; Petruzzelli, V.; Prudenzano, F.. - In: JOURNAL OF THE OPTICAL SOCIETY OF AMERICA. B, OPTICAL PHYSICS. - ISSN 0740-3224. - STAMPA. - 10:9(1993), pp. 1565-1571. [10.1364/JOSAB.10.001565]

Propagation characteristics of nonlinear graded-index optical waveguides

M. De Sario;A. D’Orazio;V. Petruzzelli;F. Prudenzano
1993-01-01

Abstract

We describe a quite general and accurate approach for determining the dispersion equation of TE-polarized modes propagating in planar graded-index waveguides bounded on one side by a self-focusing nonlinear cover with finite thickness. The proposed structure appears to be appropriate for wavelength converters based on a four-wave mixing process. The dependence of the guided power flow along the proposed four-layered structure (which is different from others previously published) on the refractive-index profile parameters is investigated. The validity of the reported numerical results is confirmed by the beam-propagation-method simulation. Moreover, a particular waveguide configuration is described, one especially designed to maximize the power confinement in the nonlinear medium.
1993
Propagation characteristics of nonlinear graded-index optical waveguides / De Sario, M.; D’Orazio, A.; Petruzzelli, V.; Prudenzano, F.. - In: JOURNAL OF THE OPTICAL SOCIETY OF AMERICA. B, OPTICAL PHYSICS. - ISSN 0740-3224. - STAMPA. - 10:9(1993), pp. 1565-1571. [10.1364/JOSAB.10.001565]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/5219
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