Front induced transitions: refractive index fronts in dispersive waveguides

被引：0

作者：

Gaafar, Mahmoud A. ^{[1
,2
]}

Renner, Hagen ^{[1
]}

Baba, Toshihiko ^{[3
]}

Eich, Manfred ^{[1
,4
]}

Petrov, Alexander Yu. ^{[1
,5
]}

机构：

[1] Hamburg Univ Technol, Inst Opt & Elect Mat, Eissendorfer Str 38, D-21073 Hamburg, Germany

[2] Menoufia Univ, Fac Sci, Dept Phys, Menoufia, Egypt

[3] Yokohama Natl Univ, Dept Elect & Comp Engn, 79-5 Tokiwadai, Yokohama, Kanagawa 2408501, Japan

[4] Helmholtz Zentrum Geesthacht, Inst Mat Res, Max Planck Str 1, D-21502 Geesthacht, Germany

[5] ITMO Univ, 49 Kronverkskii Ave, St Petersburg 197101, Russia

来源：

NONLINEAR OPTICS AND ITS APPLICATIONS 2020 | 2020年 / 11358卷

关键词：

Dynamic manipulation of light; front induced transition; silicon waveguides; nonlinear photonics; OPTICAL PULSE-COMPRESSION; CROSS-PHASE MODULATION; CONVERSION; FIBERS; REFLECTION; SOLITONS; LIGHT;

D O I：

10.1117/12.2555751

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Moving refractive index fronts in waveguides with dispersion is a special type of spatio-temporal modulation leading to the change of signal frequency and wavenumber. The interaction of light with such fronts allows frequency conversion, light stopping, optical delays as well as bandwidth and pulse duration manipulation. We will present theoretical and experimental examples of signal transmission, reflection and trapping by the front and highlight special situations such as light stopping, time reversal or optical push broom effect. We will geometrically consider indirect transitions in the dispersion relation using the phase continuity relation at the front and present numerical solutions of the linear Schrodinger equation which follows from the slowly varying envelope approximation of the wave equation. In particular, for highly dispersive waveguides a temporal evolution of the spatial wave envelopes are considered in contrast to conventional spatial evolution of temporal envelopes. Further, we will present an overview of experimental results and estimate the maximal achievable effects for each of the application in different waveguide systems.

引用

页数：8

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