Title :
Terabit transoceanic system assessment with industrial margins using 25 GHz channel spacing and NRZ format
Author :
Vareille, G. ; Sab, O. Ait ; Pitel, F. ; Marcerou, J.F.
Abstract :
We have transmitted 1.12 Tbit/s over 6300 km using only 22.2 nm of C-band EDFAs with 25 GHz spacing and NRZ modulation format. The average performance obtained correspond to a 3.6 dB margin for a system designed with Enhanced 7% redundancy FEC scheme based on concatenated Reed-Solomon code. This experiment demonstrates for the first time the industrial feasibility of a 1.1 Tbit/s transoceanic transmission which is compatible with 0.4 (bit/s)/Hz. The use of NRZ format has two advantages. The first one is a low cost and compact terminal equipment due to less modulation stages compared to RZ or CRZ. The second one is a better compatibility with high channel density allowing simpler and lower cost repeaters for a given capacity.
Keywords :
Reed-Solomon codes; forward error correction; optical cables; optical fibre amplifiers; optical repeaters; submarine cables; telecommunication channels; 1.1 Tbit/s; 1.12 Tbit/s; 6300 km; C-band EDFAs; FEC scheme; GHz channel spacing; NRZ format; NRZ modulation format; Tbit/s transoceanic transmission; channel density; compact terminal equipment; concatenated Reed-Solomon code; industrial margins; modulation stages; terabit transoceanic system assessment; Channel spacing; Concatenated codes; Forward error correction; Optical amplifiers; Optical fiber polarization; Optical signal processing; Optical transmitters; Phase modulation; Power amplifiers; Q factor;
Conference_Titel :
Optical Fiber Communication Conference and Exhibit, 2002. OFC 2002
Print_ISBN :
1-55752-701-6
DOI :
10.1109/OFC.2002.1036371
