Topic
Four-wave mixing
About: Four-wave mixing is a research topic. Over the lifetime, 7530 publications have been published within this topic receiving 112702 citations.
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TL;DR: In this article, the conversion of digital and analog-modulated optical signals from the 1550nm band to the 1300nm band is demonstrated in silicon waveguides based on parametric Stokes to anti-Stokes coupling using the Raman susceptibility of silicon.
Abstract: Conversion of digital- and analog-modulated optical signals from the 1550nm band to the 1300nm band is demonstrated in silicon waveguides. The conversion is based on parametric Stokes to anti-Stokes coupling using the Raman susceptibility of silicon.
59 citations
TL;DR: Time-resolved degenerate four-wave mixing experiments were conducted on films of pure C 60 and C 70 using a picosecond tunable dye laser, and the fullerenes exhibit a large third-order optical response, and their dynamics show wavelength and fluence dependence.
Abstract: Time-resolved degenerate four-wave mixing experiments were conducted on films of pure C 60 and C 70 using a picosecond tunable dye laser. The fullerenes exhibit a large third-order optical response, and their dynamics show wavelength and fluence dependence. The temporal response is characterized by a long-lived component attributed to the triplet excited state and an early decay associated with population of the singlet excited state. This fast response is considerably shortened at higher laser fluences and an excitonic singlet-singlet annihilation mechanism is proposed
59 citations
TL;DR: The output power level of logic "1" dependence on the operating conditions, such as two input signal powers, injection current, and input signal wavelength, are investigated in detail using the broad-band model of this all-optical half adder.
Abstract: A novel scheme for an ultrahigh-speed all-optical half adder based on four-wave mixing (FWM) in semiconductor optical amplifiers (SOAs) is proposed. This scheme is free of pattern effect, due to using the polarization-shift-keying (PolSK) modulation format. By numerical simulation, the output power level of logic "1" dependence on the operating conditions, such as two input signal powers, injection current, and input signal wavelength, are investigated in detail using the broad-band model of this all-optical half adder.
58 citations
TL;DR: Above gap the nonlinear coefficient X(3) was found to be one of the largest and fastest in a polymer.
Abstract: We report measurement of χ3 in polythiophene and a homologous series of polycondensed thiophene-based polymers above and below the absorption edge using the folded-boxcar four-wave mixing technique. Above gap the nonlinear coefficient χ3 was found to be one of the largest and fastest in a polymer.
58 citations