Abstract
With the implementation of differential phase-shift keying (DPSK) in optical transmission systems, phase-preserving amplitude regenerators become attractive to prevent the accumulation of nonlinear phase noise which is one of the major impairments in long-distance DSPK transmission systems [1]. We presented in [2] that a Nonlinear Amplifying Loop Mirror (NALM) can provide phase-preserving suppression of amplitude noise of a DPSK signal and, thus, suppress generation of nonlinear phase noise when a signal with deterministic amplitude fluctuations is transmitted. This work reports experimental results on the improved performance of a DPSK transmission system using a NALM when nonlinear phase noise generated by amplified spontaneous emission of optical amplifiers due to the fiber nonlinearity is the main limiting factor.
© 2009 IEEE
PDF ArticleMore Like This
C. Stephan, K. Sponsel, G. Onishchukov, B. Schmauss, and G. Leuchs
JThA60 National Fiber Optic Engineers Conference (NFOEC) 2009
K. Cvecek, K. Sponsel, C. Stephan, G. Onishchukov, R. Ludwig, C. Schubert, B. Schmauss, and G. Leuchs
OWS3 Optical Fiber Communication Conference (OFC) 2008
Klaus Sponsel, Kristian Cvecek, Christian Stephan, Georgy Onishchukov, Bernhard Schmauss, and Gerd Leuchs
CI2_3 The European Conference on Lasers and Electro-Optics (CLEO/Europe) 2007