We present the results of an in-depth experimental investigation about all-optical wavelength conversion of a 100-Gb/s polarization-multiplexed (POLMUX) signal. Each polarization channel is modulated at 25 Gbaud by differential quadrature phase-shift keying (DQPSK). The conversion is realized exploiting the high nonlinear χ(2) coefficient of a periodically poled lithium niobate waveguide, in a polarization-independent ring configuration. We find that slight non-idealities in the polarization independent setup of the wavelength converter can significantly impair the performance of POLMUX systems. We show that high-quality wavelength conversion can be nevertheless achieved for both channels, provided that an accurate optimization of the setup is performed. This is the first demonstration, to the best of our knowledge, of the possibility to obtain penalty-free optical wavelength conversion in a 100-Gb/s POLMUX transmission system using direct-detection.

All-optical wavelength conversion of a 100-Gb/s polarization-multiplexed signal

MARTELLI, PAOLO;BOFFI, PIERPAOLO;FERRARIO, MADDALENA;MARAZZI, LUCIA;PAROLARI, PAOLA;SIANO, ROCCO;MARTINELLI, MARIO;
2009

Abstract

We present the results of an in-depth experimental investigation about all-optical wavelength conversion of a 100-Gb/s polarization-multiplexed (POLMUX) signal. Each polarization channel is modulated at 25 Gbaud by differential quadrature phase-shift keying (DQPSK). The conversion is realized exploiting the high nonlinear χ(2) coefficient of a periodically poled lithium niobate waveguide, in a polarization-independent ring configuration. We find that slight non-idealities in the polarization independent setup of the wavelength converter can significantly impair the performance of POLMUX systems. We show that high-quality wavelength conversion can be nevertheless achieved for both channels, provided that an accurate optimization of the setup is performed. This is the first demonstration, to the best of our knowledge, of the possibility to obtain penalty-free optical wavelength conversion in a 100-Gb/s POLMUX transmission system using direct-detection.
TLC; fiber optics communications; wavelength conversion devices
File in questo prodotto:
File Dimensione Formato  
OptExp_09.pdf

Accesso riservato

: Post-Print (DRAFT o Author’s Accepted Manuscript-AAM)
Dimensione 185.91 kB
Formato Adobe PDF
185.91 kB Adobe PDF   Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11311/560550
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 44
  • ???jsp.display-item.citation.isi??? 35
social impact