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Journal article

Experimental evaluation of prefiltering for 56 Gbaud DP-QPSK signal transmission in 75 GHz WDM grid

By Borkowski, Robert1,2; de Carvalho, Luis Henrique H.3; Silva, Edson Porto da3; Diniz, Júlio César M.3; Zibar, Darko1,2; de Oliveira, Júlio César R.F.3; Tafur Monroy, Idelfonso1,2

From

Department of Photonics Engineering, Technical University of Denmark1

Metro-Access and Short Range Systems, Department of Photonics Engineering, Technical University of Denmark2

Centro de Pesquisa e Desenvolvimento em Telecomunicações3

We investigate optical prefiltering for 56Gbaud (224Gbit/s) electrical time-division multiplexed (ETDM) dual polarization (DP) quaternary phase shift keying (QPSK) transmission. Different transmitter-side optical filter shapes are tested and their bandwidths are varied. Comparison of studied filter shapes shows an advantage of a pre-emphasis filter.

Subsequently, we perform a fiber transmission of the 56Gbaud DP QPSK signal filtered with the 65GHz pre-emphasis filter to fit the 75GHz transmission grid. Bit error rate (BER) of the signal remains below forward error correction (FEC) limit after 300km of fiber propagation.

Language: English
Publisher: Elsevier BV
Year: 2014
Pages: 39-43
ISSN: 10959912 and 10685200
Types: Journal article
DOI: 10.1016/j.yofte.2013.11.006
ORCIDs: Borkowski, Robert , Zibar, Darko and Tafur Monroy, Idelfonso
Keywords

Coherent detection Optical modulation Optical prefiltering Optical transmission Quaternary phase shift keying Wavelength division multiplexing

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