RZ versus NRZ modulation format for dispersion compensated SMF-based 10-Gb/s transmission with more than 100-km amplifier spacing

Authors
Caspar, C Foisel, HM Gladisch, A Hanik, N Kuppers, F Ludwig, R Mattheus, A Pieper, W Strebel, B Weber, HG
Citation
C. Caspar et al., RZ versus NRZ modulation format for dispersion compensated SMF-based 10-Gb/s transmission with more than 100-km amplifier spacing, IEEE PHOTON, 11(4), 1999, pp. 481-483
Citations number
6
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
IEEE PHOTONICS TECHNOLOGY LETTERS
ISSN journal
10411135 → ACNP
Volume
11
Issue
4
Year of publication
1999
Pages
481 - 483
Database
ISI
SICI code
1041-1135(199904)11:4<481:RVNMFF>2.0.ZU;2-R
Abstract
We compared numerically and experimentally the transmission behavior of ret urn-to-zero (RZ) and nonreturn-to-zero (NRZ) modulated signals. 10 Gb/s wer e transmitted over 2040-km standard single-mode fiber using an alternating dispersion compensation scheme in a recirculating loop with 102 km amplifie r spacing. Receiver sensitivities of -33 dBm (NRZ) and -35 dBm (RZ) could b e achieved. RZ allows for a simple linear dispersion compensation whereas N RZ suffers from nonlinear signal distortion. NRZ requires under-compensatio n of the linear chromatic dispersion dependent on signal power and transmis sion length, Therefore, NRZ makes network design more difficult.