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 paper, the performance of wavelength conversion based on nondegenerate four-wave mixing (FWM) with two pumps is theoretically evaluated in a silicon nanowire waveguide.
Abstract: The performance of wavelength conversion based on nondegenerate four-wave mixing (FWM) with two pumps is theoretically evaluated in a silicon nanowire waveguide. A theoretical model is developed to take into the limitations of nonlinear loss parameters on conversion bandwidth, efficiency, and uniformity. Analysis shows that the conversion bandwidth of two-pump nondegenerate FWM is > 30% broader than the conversion bandwidth of the degenerate FWM without compromising the conversion efficiency under the same pump power level. Also the results indicate that the improvement originates from efficient phase matching over broader bandwidth range due to two-wavelength pumps.
32 citations
TL;DR: In this paper, the effect of four-wave mixing (FWM) among the equally spaced converted signals was investigated and it was shown that the critical number of equally spaced consecutive channels giving significant penalty is 4.
Abstract: We experimentally demonstrate multicast wavelength conversion by exploiting cross-gain modulation and cross-phase modulation in an InAs/InGaAsP/InP columnar quantum dot semiconductor optical amplifier (CQD-SOA). We report wavelength multicasting of 40 and 80 Gb/s return-to-zero signals on four 400-GHz spaced channels. We find in all cases a moderate conversion penalty which we attribute mostly to four-wave mixing (FWM) among the equally spaced converted signals. We study the effect of the FWM impairments and find that the critical number of equally spaced consecutive channels giving significant penalty is 4. Instead, two- and three-channel conversion is possible with a null or negative Q2 factor penalty.
32 citations
TL;DR: The process of saturable-gain degenerate four-wave mixing in a diode-pumped microchip Nd:YVO(4) amplifier is investigated and the imaging capabilities of the volume population hologram written in the N d:Y VO( 4) amplifier are demonstrated.
Abstract: The process of saturable-gain degenerate four-wave mixing in a diode-pumped microchip Nd:YVO(4) amplifier is investigated. To enhance the efficiency of the interaction, multipass geometries are employed in which the weak signal beam and therefore the conjugate beam experience several passes in the gain medium. Degenerate fourwave mixing reflectivities as high as R = 10% and R = 170% have been obtained experimentally for 130-W diode pumping with two-pass and four-pass geometries, respectively. Finally, the imaging capabilities of the volume population hologram written in the Nd:YVO(4) amplifier are demonstrated.
32 citations
TL;DR: In this article, the spatial variation of the Raman and Kerr susceptibilities around the ring to quasi-phase match the wavelength conversion processes for TE polarized fields is used to achieve a wavelength conversion efficiency of up to 6 dB.
Abstract: We propose an efficient wavelength conversion scheme that is based on either Raman-resonant four-wave mixing or non-resonant Kerr-induced four-wave mixing in a silicon nanowire ring, and that does not require dispersion engineering of the nanowire. We rely on the spatial variation of the Raman and Kerr susceptibilities around the ring to quasi-phase match the wavelength conversion processes for TE polarized fields. The flexibility of this quasi-phase-matching scheme can lead to wavelength conversion efficiencies from -26.7 dB to values larger than 0 dB, and in certain circumstances makes it possible to outperform conventional phase-matched conversion in a dispersion-engineered silicon ring by factors exceeding 6 dB.
32 citations
TL;DR: In this article, the authors used a periodically poled MgO-doped LiNbO3 waveguide for optical parametric deamplification of 3.2dB.
Abstract: Squeezed light was generated at a telecommunication wavelength via single-pass optical parametric amplification in a periodically poled MgO-dopedLiNbO3 waveguide. Classical parametric deamplification of −8.9dB was achieved. This large magnitude of deamplification indicates that the problem of gain-induced diffraction was avoided by employing the waveguide. Squeezing of 3.2dB was directly observed using a time-domain pulsed homodyne detector.
32 citations