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466 results on '"Forghieri F"'

167. 1-Tb/s transmission experiment

Author

Chraplyvy, A.R., primary, Gnauck, A.H., additional, Tkach, R.W., additional, Zyskind, J.L., additional, Sulhoff, J.W., additional, Lucero, A.J., additional, Sun, Y., additional, Jopson, R.M., additional, Forghieri, F., additional, Derosier, R.M., additional, Wolf, C., additional, and McCormick, A.R., additional

Published
1996
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179. β-HHVs and HHV-8 in Lymphoproliferative Disorders.

Author

Quadrelli, C., Barozzi, P., Riva, G., Vallerini, D., Zanetti, E., Potenza, L., Forghieri, F., and Luppi, M.

Subjects
LYMPHOPROLIFERATIVE disorders, EPSTEIN-Barr virus, HUMAN herpesvirus-6 infections, HERPESVIRUS diseases, B cells, HIV, PATIENTS
Abstract

Similarly to Epstein-Barr virus (EBV), the human herpesvirus-8 (HHV-8) is a γ-herpesvirus, recently recognized to be associated with the occurrence of rare B cell lymphomas and atypical lymphoproliferations, especially in the human immunodeficiency virus (HIV) infected subjects. Moreover, the human herpesvirus-6 (HHV-6), a β-herpesvirus, has been shown to be implicated in some non-malignant lymph node proliferations, such as the Rosai Dorfman disease, and in a proportion of Hodgkin's lymphoma cases. HHV-6 has a wide cellular tropism and it might play a role in the pathogenesis of a wide variety of human diseases, but given its ubiquity, disease associations are difficult to prove and its role in hematological malignancies is still controversial. The involvement of another β-herpesvirus, the human cytomegalovirus (HCMV), has not yet been proven in human cancer, even though recent findings have suggested its potential role in the development of CD4+ large granular lymphocyte (LGL) lymphocytosis. Here, we review the current knowledge on the pathogenetic role of HHV-8 and human β-herpesviruses in human lymphoproliferative disorders. [ABSTRACT FROM AUTHOR]

Published
2011
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188. Evaluation of the dependence on system parameters of non-linear interference accumulation in multi-span links.

Author

Carena, A., Poggiolini, P., Curri, V., Bosco, G., and Forghieri, F.

Abstract

Non-linear effects in uncompensated links generate a noise-like additive interference: we study in detail the accumulation law vs. number of spans as a function of main system parameters (fiber types and WDM total bandwidth). In all practical cases, we analytically found a slightly super-linear accumulation confirmed by numerical simulations. [ABSTRACT FROM PUBLISHER]

Published
2012

189. Evaluation of non-linear interference in uncompensated links using Raman amplification.

Author

Curri, V., Carena, A., Poggiolini, P., Bosco, G., and Forghieri, F.

Abstract

We extend a model for nonlinear propagation over lumped-amplified uncompensated links to setups using Raman amplification. We compare theoretical to simulative results for PM-16QAM Nyquist-WDM on PSCF links, showing an excellent agreement. We also show that Raman NLI enhancement gives limited practical impairments in realistic setups. [ABSTRACT FROM PUBLISHER]

Published
2012

190. Investigation of the dependence of non-linear interference on the number of WDM channels in coherent optical networks.

Author

Pastorelli, R., Bosco, G., Carena, A., Poggiolini, P., Curri, V., Piciaccia, S., and Forghieri, F.

Abstract

We experimentally investigate nonlinearity impact in a multi-span uncompensated coherent optical system, transmitting, in the 50GHz grid, Nch×100G CP-DQPSK channels, varying Nch from 3 to 71. A good agreement was found with an analytical model, confirming the progressive growth of interference with Nch. Impacts on network design are evaluated. [ABSTRACT FROM PUBLISHER]

Published
2012

191. Record-high ODN power budget (more than 38 dB) in self-coherent reflective PON at 1.25 Gbit/s after propagation through 80 km installed fibers.

Author

Rizzelli, G., Ferrero, V., Straullu, S., Abrate, S., Forghieri, F., and Gaudino, R.

Abstract

We experimentally demonstrate extremely high ODN optical power budget in self-coherent reflective PON at 1.25 Gbit/s (upstream), allowing more than 38 dB attenuation in the ODN after propagation in 80 km installed fibers. This was obtained by optimizing R-SOA parameters at the ONU, (optional) Faraday rotation and DSP at the OLT. [ABSTRACT FROM PUBLISHER]

Published
2012

192. Optimization of uncooled RSOA parameters in WDM reflective PONs based on self-coherent or direct detection OLT receivers.

Author

Rizzelli, G., Ferrero, V., Straullu, S., Abrate, S., Forghieri, F., and Gaudino, R.

Abstract

We investigate on the uncooled RSOA driving parameters in reflective-PONs, focusing on an upstream path at 1.25 Gbit/s and binary modulation. We show how the optimal values change using direct-detection or self-coherent receivers. We also address operating temperature dependence issues. [ABSTRACT FROM PUBLISHER]

Published
2012

193. Optimization of DSP-based Nyquist-WDM PM-16QAM transmitter.

Author

Curri, V., Carena, A., Bosco, G., Poggiolini, P., and Forghieri, F.

Abstract

Generation of PM-16QAM Nyquist-WDM signals in the digital domain is analyzed, by optimizing DSP and DAC parameters at different channel spacings. We show that ArcSin operation performed in DSP for compensating MZM non-linearity gives limited OSNR advantages and increases DSP complexity, but may give up to 3 dB gain in terms of launch power. [ABSTRACT FROM PUBLISHER]

Published
2012

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