Continuous-wave wavelength conversion in a photonic crystal fiber with two zero-dispersion wavelengths

Department of Chemistry, Aarhus University, Aarhus, Central Jutland, Denmark
Optics Express (Impact Factor: 3.49). 09/2004; 12(17):4113-22. DOI: 10.1364/OPEX.12.004113
Source: PubMed


We demonstrate continuous-wave wavelength conversion through four-wave mixing in an endlessly single mode photonic crystal fiber. Phasematching is possible at vanishing pump power in the anomalous dispersion regime between the two zero-dispersion wavelengths. By mixing appropriate pump and idler sources, signals in the range 500-650 nm are obtained in good accordance with calculated phasematching curves. The conversion efficiency from idler to signal power is currently limited to 0.3% by the low spectral density of the pump and idler sources at hand, but can be greatly enhanced by applying narrow line width lasers.

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Available from: Karen Marie Hilligsøe, Aug 01, 2014
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    • "The FWM use the third order nonlinear susceptibility to create a new frequency which is much closer thereby minimizing the effects of phase-matching. FWM is special as it preserves phase information and allows formattransparent operation, thus is considered so far as the most promising AOWC technique and has been widely investigated in various nonlinear materials such as fiber [8] [9] [10], silicon [11] [12] [13], and semiconductor optical amplifier [14] [15] [16]. "
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    ABSTRACT: A scheme named "spoof" four wave mixing (SFWM) is proposed, where a dynamic refractive index grating induced by the beating of the co-propagating pump and signal is able to modulate a Bragg grating (BG) to create additional reflective peaks (ARPs) at either side of the unperturbed BG bandgap. When a probe wave located at the wavelength of ARPs is counter-propagating, it is reflected from the induced ARPS while tracking the signal data information but at the new wavelength. In contrast to the well-known FWM, where the induced dynamic refractive index grating modulates photons to create a wave at a new frequency, the SFWM is different in that the dynamic refractive index grating is generated in a nonlinear BG to excite ARPS at either side of the original BG bandgap in reflection spectrum. This fundamental difference enable the SFWM to avoid the intrinsic shortcoming of stringent phase matching required in the conventional FWM, and allows novel all-optical wavelength conversion with modulation format transparency and ultrabroad conversion range, which represents a major advantage for next generation of all-optical networks.
    Full-text · Article · Jan 2013 · Proceedings of SPIE - The International Society for Optical Engineering
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    • "OUR-WAVE MIXING (FWM) in the optical fiber is an interesting third-order nonlinear optical phenomenon. Numerous investigations have been conducted because of its potential applications such as wavelength conversion [1], [2], new frequency generation [3], [4], parametric oscillator [5], and quantum information processing [6], [7]. "
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    ABSTRACT: In this paper, a model describing the four-wave mixing (FWM) among an arbitrary amount of incident waves is derived and the predictor-corrector method is exploited to solve the equations. Based on the numerical model, we studied methods to promote the energy exchange among the incident waves. The results show that a proper value of phase mismatch can accelerate the energy exchanging among the pump waves and simultaneously reduces the idler wave powers. This model is applied to investigate the behavior of a multiwavelength erbium-doped fiber laser (MWEDFL) exploiting FWM. According to the simulation, through using a 50-m-long nonlinear fiber with nonlinear coefficient of 11 /W/km, 19 lines can be obtained in the output spectrum with power difference
    Full-text · Article · Jul 2009 · Journal of Lightwave Technology
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    • "Signal (λ s ) and idler (λ i ) wavelengths satisfying (1), (2) for a pump wavelength of 1064 nm, as a function of PCF pitch and hole diameter. The solutions in the upper panel correspond to pumping in the anomalous-dispersion regime, whereas the designs in the lower panel have normal dispersion at the pump wavelength the visible or near-infrared regime (Andersen et al. 2004; Chen et al. 2006; Wong et al. 2005). To illustrate the potential of PCFs for such short-wavelength applications, in Fig. 4 the phase matching wavelengths for a pump wavelength of 800 nm are shown in a plot similar to Fig. 2 "
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    ABSTRACT: Photonic crystal fibers (PCFs) have had a substantial impact on nonlinear fiber optics and shortpulsed fiber laser systems due to their novel dispersion properties. The large normal or anomalous waveguide dispersion available in such fibers opens up a number of new opportunities not accessible with standard fiber technology. In this contribution, the fundamentals of PCF dispersion are briefly reviewed along with earlier results. In addition, some of our recent work on dispersion tailoring to facilitate nonlinear processes, and dispersion control in lasers will be presented.
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