Optics Letters

All optical spectral switches

Pin Han

Published Jun 7, 2012• 21 citations

Abstract

It is shown theoretically that the nonlinear optical Kerr effect can be used to build an all optical configuration controlling spectral switches. The main advantage in it is that it can greatly simplify the control method compared to previous schemes using the aperture mechanism or electro-optical one.

DOI: 10.1364/ol.37.002319

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Optics Letters

All optical spectral switches

Pin Han

Published Jun 7, 2012• 21 citations

Publisher

Abstract

DOI: 10.1364/ol.37.002319

Related papers

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The self-Kerr-nonlinearity of a four-level

\mathsf{N}

-type atomic system is studied both experimentally and theoretically. The self-Kerr-nonlinear coefficient

{n}_{2}

of the probe beam is greatly enhanced near atomic resonance, and can be dramatically modified by changing the switching laser power. With an increasing switching laser power, the slope of the Kerr nonlinear coefficient

{n}_{2}

around the atomic resonance changes from negative to positive, and the value of

{n}_{2}

varies from \ensuremath{\sim}--4 \ifmmode\times\else\texttimes\fi{} 10${}^{\ensuremath{-}6}$ to 4 \ifmmode\times\else\texttimes\fi{} 10${}^{\ensuremath{-}6}$ cm

{}^{2}

/W at certain near-resonant probe frequency detunings. Such controllable Kerr nonlinearity can find applications in optoelectronic devices, such as all-optical switching and logic gates.