Title :
Experimental comparison of all-Raman vs. Raman/EDFA hybrid amplification with 40 Gb/s-based ETDM/DWDM transmissions over 400 km TW-RS fibre
Author :
Zhu, Yujia ; Fludger, C.R.S. ; Lee, Woo Seung ; Hadjifotiou, A.
Author_Institution :
Harlow Labs., Nortel Networks, Harlow, UK
Abstract :
Summary form only given. A 400 km TW-RS fibre system with 16 channels of 40 Gbit/s CS-RZ ETDM signals has been used to experimentally compare the relative merits of all Raman and Raman/EDFA hybrid amplification. In the cases of counter-pumped 10 × 40 km and 5 × 80 km spans, all Raman distributed amplification has allowed best transmission performance, compared to Raman/EDFA hybrid amplification. All Raman transmission yielded up to 1.3 dB system Q improvement in the 40 and 80 km span length systems, compared to systems without Raman gain. The MPI impairment associated with the double Rayleigh scattering effect in all-Raman counter-pumped long span systems, was significantly reduced in an experimental demonstration over 1 × 160 + 2 × 120 km TW-RS fibre, by employing multi-span bidirectionally pumped all Raman amplification.
Keywords :
Raman lasers; Rayleigh scattering; erbium; optical communication equipment; optical fibre amplifiers; time division multiplexing; wavelength division multiplexing; 120 km; 16 channels; 160 km; 40 Gbit/s; 40 km; 80 km; ETDM/DWDM transmissions; Q improvement; Raman/EDFA hybrid amplification; TW-RS fibre; all Raman distributed amplification; all Raman transmission; all-Raman amplification; all-Raman counter-pumped long span systems; counter-pumped spans; double Rayleigh scattering effect; multi-span bidirectionally pumped all Raman amplification; Erbium-doped fiber amplifier; Floods; Optical fiber networks; Protocols; Queueing analysis; Rayleigh scattering; Routing; Stimulated emission; Telecommunication traffic; Wavelength division multiplexing;
Conference_Titel :
Optical Fiber Communication Conference and Exhibit, 2002. OFC 2002
Print_ISBN :
1-55752-701-6
DOI :
10.1109/OFC.2002.1036550
