Examinando por Materia "DISPERSION"
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- Artículo de Publicación PeriódicaAnalytical study of coherence in seeded modulation instability(2016-09) Bonetti, Juan I.; Hernández, Santiago M.; Fierens, Pablo Ignacio; Grosz, Diego"We derive analytical expressions for the coherence in the onset of modulation instability, in excellent agreement with thorough numerical simulations. As usual, we start by a linear perturbation analysis, where broadband noise is added to a cw pump; then, we investigate the effect of adding a deterministic seed to the cw pump, a case of singular interest as it is commonly encountered in parametric amplification schemes. Results for the dependence of coherence on parameters such as fiber type, pump power, propagated distance, and seed signal-to-noise ratio are presented. Finally, we show the importance of including higher-order linear and nonlinear dispersion when looking at longer-wavelength regions"
- Ponencia en CongresoDispersive waves in optical fibers with a zero-nonlinearity wavelength(2021-08) Sparapani, Alexis; Linale, N.; Grosz, Diego; Bonetti, Juan I.; Fierens, Pablo Ignacio; Hernández, Santiago M."We present results on dispersive waves radiated by solitons in the context of fibers with arbitrary frequency-dependent nonlinearities. In particular, we focus on the effect of a zero-nonlinearity wavelength within the spectral region of interest."
- Artículo de Publicación PeriódicaDoubly periodic dispersion maps for 10 and 40 Gbit/s ultra-long-haul transmission(2004-09) Grosz, Diego; Banerjee, S.; Agarwal, A.; Küng, A. P.; Maywar, D. N."Optical transmission employing doubly periodic dispersion maps at 10 and 40 Gbit/s data rates is reported. The implications of these transmission results in providing added degrees of flexibility in network design, in particular, in applications such as optical add-drops and hybrid data rate systems, are discussed. "
- Artículo de Publicación PeriódicaImpact of DCF properties on system design(2006) Essiambre, René-Jean; Winzer, Peter J.; Grosz, Diego"The dispersion-compensating ﬁber is an important optical element of current and future optical networks. In this paper, we review the impact that various properties of dispersion-compensating ﬁbers has on the performance of optical communication systems."
- Artículo de Publicación PeriódicaPerformance of non-fibre based dispersion compensation for long-haul 10.7 Gbit/s DWDM transmission(2004) Grosz, Diego; Maywar, D. N.; Küng, A. P.; Agarwal, A.; Banerjee, S."Non-fibre based in-line dispersion compensation is employed to achieve long-haul transmission of 80 channels at 10.7 Gbit=s bit rate over 1200 km of LEAF fibre. Average system margins of more than 4 dB and small transmission are demonstrated. The additional penalty incurred by the periodic nature of the dispersion compensator is assessed."
- Ponencia en CongresoThe power of dispersion management for 10-Gb/s and 40-Gb/s systems(2006) Grosz, Diego; Agarwal, A.; Küng, A. P.; Maywar, D. N.; Lakoba, T. I."We review applications and requirements of dispersion compensation that enable highcapacity, long-haul, and ultra-long-haul 10-Gb/s and 40-Gb/s DWDM transmission. We briefly describe their impact on system performance and present sorne future perspectives."
- Artículo de Publicación PeriódicaRevisiting soliton dynamics in fiber optics under strict photon-number conservation(2021) Linale, N.; Fierens, Pablo Ignacio; Grosz, Diego"We revisit the complex interplay between the Raman-induced frequency shift (RIFS) and the effect of self steepening (SS) in the propagation of solitons, and in the frame work of an equation that ensures strict conservation of the num ber of photons. The generalized nonlinear Schrodinger equation (GNLSE) is shown to severely fail in preserving the number of photons for sub-100-fs solitons, leading to a large overestimation of the frequency shift. Furthermore, when considering the case of a frequency-dependent nonlinear coefficient, the GNLSE also fails to provide a good estimation of the time shift experienced by the soliton. We tackle these shortcomings of the GNLSE by resorting to the recently introduced photon-conserving GNLSE (pcGNLSE) and study the interplay between the RIFS and self steepening. As a result, we make apparent the impact of higher order nonlinearities on short-soliton propagation and propose an original and direct method for the estimation of the second-order nonlinear coefficient."