Impact of Pump-Phase Modulation on FWM-Based Wavelength Conversion of D(Q)PSK Signals

Author

Elschner, Robert ; Bunge, Christian-Alexander ; Hüttl, Bernd ; Coca, Alexandre Gual i ; Schmidt-Langhorst, Carsten ; Ludwig, Reinhold ; Schubert, Colja ; Petermann, Klaus

Author_Institution

Fachgebiet Hochfrequenztech./Photonics, Tech. Univ. Berlin, Berlin

Volume

14

Issue

3

fYear

2008

Firstpage

666

Lastpage

673

Abstract

We investigate both theoretically and experimentally the impact of pump-phase modulation on differential phase shift keying (DPSK) and differential quadrature phase shift keying (DQPSK) signals in fiber-based parametric wavelength converters. It will be shown that the pump-phase modulation used to suppress stimulated Brillouin scattering introduces critical signal degradations and optical SNR penalties on DPSK signals, and more severe on DQPSK signals. Different modulation schemes will be theoretically investigated and the quantitative results are compared to system experiments. Finally, the theoretical results for a single conversion will be extended to multiple conversions to study the cascadability of the wavelength converter.

Keywords

differential phase shift keying; multiwave mixing; optical fibre communication; optical frequency conversion; optical modulation; phase modulation; quadrature phase shift keying; FWM based wavelength conversion; differential phase shift keying; differential quadrature phase shift keying; fiber-based parametric wavelength converters; multiple conversions; pump-phase modulation; single conversion; Brillouin scattering; Degradation; Differential phase shift keying; Differential quadrature phase shift keying; Fiber nonlinear optics; Nonlinear optics; Optical wavelength conversion; Phase modulation; Stimulated emission; Wavelength conversion; Differential phase shift keying (DPSK); differential quadrature phase shift keying (DQPSK); stimulated Brillouin scattering (SBS); wavelength conversion;

fLanguage

English

Journal_Title

Selected Topics in Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

1077-260X

Type

jour

DOI

10.1109/JSTQE.2008.920290

Filename

4538026