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Optical Engineering

Logarithmic versus modified digital backward propagation algorithm in 224  Gb/s DP-16QAM transmission over dispersion uncompensated fiber links
Author(s): Rameez Asif; Chien-Yu Lin; Bernhard Schmauss
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Paper Abstract

We have numerically evaluated the transmission performances of digital backward propagation (DBP) algorithms based on the step-size selection methods: (a) constant step-size based modified DBP (M-DBP) and (b) logarithmic step-size based DBP (L-DBP). The nonlinear tolerance of homogeneous dispersion un compensated fiber links are compared in 224  Gb/s DP-16QAM transmission over 656 km of diverse fiber types, i.e., standard single mode fiber (SMF), non-zero dispersion shifted fiber (NZDSF), large effective area pure-silica-core-fiber (LA-PSCF), large effective area fiber, and true wave classic. In the case of homogeneous fiber links, LA-PSCF exhibits higher non linear threshold and gains 32% more transmission distance as compared with SMF by employing M-DBP, while we have observed an additional 13% increase in transmission distance by employing L-DBP.

Paper Details

Date Published: 11 April 2012
PDF: 6 pages
Opt. Eng. 51(4) 045007 doi: 10.1117/1.OE.51.4.045007
Published in: Optical Engineering Volume 51, Issue 4
Show Author Affiliations
Rameez Asif, Friedrich-Alexander-Univ. Erlangen-Nürnberg (Germany)
Chien-Yu Lin, Friedrich-Alexander-Univ. Erlangen-Nürnberg (Germany)
Bernhard Schmauss, Friedrich-Alexander-Univ. Erlangen-Nürnberg (Germany)


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