All-optical OFDM and distributed Raman amplification: Challenges to enable high capacities and extend reach

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Date
2012
Authors
Gunning, Fatima C. Garcia
Frascella, Paola
Antony, Cleitus
Fabbri, Simon
Rafique, Danish
Sygletos, Stylianos
Gunning, Paul
Reidy, Dermot
McAuliffe, William
Cassidy, Derek
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IEEE, National Institute of Telecommunications
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Abstract
We review recent advances in all-optical OFDM technologies and discuss the performance of a field trial of a 2 Tbit/s Coherent WDM over 124 km with distributed Raman amplification. The results indicate that careful optimisation of the Raman pumps is essential. We also consider how all-optical OFDM systems perform favourably against energy consumption when compared with alternative coherent detection schemes. We argue that, in an energy constrained high-capacity transmission system, direct detected all-optical OFDM with 'ideal' Raman amplification is an attractive candidate for metro area datacentre interconnects with ~100 km fibre spans, with an overall energy requirement at least three times lower than coherent detection techniques.
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Keywords
OFDM modulation , All-optical OFDM , Raman amplification , Energy consumption
Citation
GARCIA-GUNNING, F. C., FRASCELLA, P., ANTONY, C., FABBRI, S. J., RAFIQUE, D., SYGLETOS, S., GUNNING, P., REIDY, D., MCAULIFFE, W., CASSIDY, D. & ELLIS, A. D. (2012) 'All-optical OFDM and distributed Raman amplification: Challenges to enable high capacities and extend reach', ICTON 2012, 14th International Conference on Transparent Optical Networks. University of Warwick, Coventry, 2-5 July 2012.
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© 2012 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.