Title :
Service differentiated drop code unit for metro ring optical networks
Author :
Anas, Siti Barirah Ahmad ; Quinlan, T.J. ; Walker, Stuart D.
Author_Institution :
Sch. of Comput. Sci. & Electron. Eng., Univ. of Essex, Colchester, UK
Abstract :
The authors demonstrate using both simulation and experiment, a drop code unit for metro ring optical networks with service differentiation capability. This is achieved by means of a spectral amplitude coding technique whereby the code weight in a particular channel is varied to provide different signal quality levels. Transmission of three channels with different weights operating at 10 Gbps per channel was simulated over a 68 km unamplified and 185 km amplified links of dispersion compensated fibre. Services are perfectly dropped at bit error rates from 10-9 to 10-3, leaving the through service free from accumulated noise. The authors also present a 2.5 Gbps per channel proof-of-concept experiment over 40 km of single-mode fibre (SMF).
Keywords :
code division multiplexing; error statistics; optical fibre dispersion; optical fibre networks; telecommunication channels; telecommunication services; accumulated noise; bit error rates; bit rate 10 Gbit/s; bit rate 2.5 Gbit/s; channel transmission; code weight; dispersion compensated fibre; distance 185 km; distance 68 km; drop code unit; metro ring optical networks; optical code division multiplexing; proof-of-concept experiment; service differentiation capability; single-mode fibre; spectral amplitude coding; spectral amplitude coding technique;
Journal_Title :
Optoelectronics, IET
DOI :
10.1049/iet-opt.2008.0067
