Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
  • CLEO/Europe and EQEC 2011 Conference Digest
  • OSA Technical Digest (CD) (Optica Publishing Group, 2011),
  • paper CI1_1

Amplitude Noise Reduction in Multilevel QAM Formats Using a Nonlinear Amplifying Loop Mirror with a Saturable Amplifier

Not Accessible

Your library or personal account may give you access

Abstract

Quadrature amplitude modulation (QAM) allows increase of transmission capacity while keeping the symbol rate [1]. But QAM signals show a high sensitivity to amplitude and phase noise. In particular, amplitude noise does not only enlarge the overlap between the signal states, but due to the Gordon-Mollenauer effect in the transmission line [2], it is also converted into nonlinear phase noise which is the major limiting factor for phase-shift-keying (PSK) transmission [3]. Phase-preserving amplitude regeneration was considered to reduce amplitude fluctuations and, therefore, the origin of nonlinear phase noise for binary [4] and quadrature PSK [5]. It has already been demonstrated that the periodic behaviour of the power transfer characteristic of a nonlinear amplifying loop mirror (NALM) can create multiple flat, so-called plateau regions, which can be used also for QAM signal regeneration [6].

© 2011 Optical Society of America

PDF Article
More Like This
Effect of Group-Velocity Dispersion in Multilevel Amplitude Regenerator based on a Nonlinear Amplifying Loop Mirror

T. Roethlingshoefer, D. Toth, G. Onishchukov, B. Schmauss, and G. Leuchs
JTh2A.121 CLEO: Applications and Technology (CLEO:A&T) 2012

Multilevel Amplitude and Phase Regeneration in a Nonlinear Amplifying Loop Mirror with a Phase-Sensitive Amplifier

Tobias Roethlingshoefer, Georgy Onishchukov, Bernhard Schmauss, and Gerd Leuchs
Tu.1.A.3 European Conference and Exhibition on Optical Communication (ECOC) 2012

DPSK Signal Regeneration Using a Nonlinear Amplifying Loop Mirror

K. Sponsel, C. Stephan, K. Cvecek, G. Onishchukov, B. Schmauss, and G. Leuchs
OThB2 Optical Fiber Communication Conference (OFC) 2007

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved