Title :
415 km unrepeatered transmission of 25 Gbit/s NRZ with +26.5 dBm launch, clock pre-chirp, Raman amplification, FEC and dispersion compensation
Author :
Webb, S.M. ; Guild, K.M. ; Sian, S.S.
Author_Institution :
Alcatel Submarine Networks, London, UK
Abstract :
2.5 Gbit/s transmission is demonstrated over a mixed fibre system without using remote optically pumped amplifiers (ROPAs). The use of NRZ data with clock pre-chirp, stimulated Brillouin scattering (SBS) suppression and dispersion compensation enables a +26.5 dBm signal to be launched into fibre. A 980 nm pumped pre-amplifier with a 3.5 dB noise figure and additional Raman gain at the receiver realises a system length of 392 km with an effective sensitivity of -45.2 dBm. With the addition of forward error correction, this is increased to 415 km
Keywords :
forward error correction; optical fibre communication; optical fibre dispersion; optical pumping; optical receivers; preamplifiers; stimulated Brillouin scattering; 2.5 kbit/s; 3.5 dB; 392 km; 415 km; 980 nm; FEC; NRZ data; Raman amplification; Raman gain; clock prechirp; dispersion compensation; forward error correction; mixed fibre system; noise figure; pumped preamplifier; sensitivity; stimulated Brillouin scattering suppression; system length; unrepeatered transmission;
Conference_Titel :
High Speed and Long Distance Optical Transmission, IEE Colloquium on
Conference_Location :
Birmingham
DOI :
10.1049/ic:19960559
