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- Title
COMPENSACIÓN DE LOS EFECTOS DISPERSIVOS DE LA FIBRA ÓPTICA EN UN SISTEMA IM-DD USANDO ECUALIZACIÓN LMS Y MLSE.
- Authors
Gallego Ruiz, Roobert David; Sánchez Sierra, Yeison David; Granada Torres, Jhon James; Cárdenas Soto, Ana María; Guerrero González, Neil
- Abstract
Currently, Colombia has started the deployment of fiber-to-the-home (FTTH) technology. It is due to the traffic demand and the new services offered to the end users, taking advantage of the great optical fiber bandwidth. For FTTH massification, the equipments of optical networks must be of low cost, therefore, IM-DD (intensity modulation with direct detection) systems are still implemented in spite of the advantages of coherent detection systems. However, in IM-DD systems, the transmitted signals are not tolerable to the optical fiber impairments, mainly, the chromatic dispersion, which generates the inter-symbol interference (ISI) in the received signal, increasing the bit error rate (BER). In this paper, an IM-DD system is modeled in Virtual Photonics®(VPI) software. The optical network is modulated in No-Return-to-Zero On-Off-Keying (NRZ-OOK) format, at 40 Gbps, reaching distances of 80 km. Optical fiber impairments compensation is proposed using LMS (Least- Mean-Square) algorithm, which uses a training sequence to find the channel coefficients, and MLSE (Maximunlikelihood sequence estimation). These techniques allow a BER reduction and improve the system performance.
- Publication
Journal of Research of the University of Quindio / Revista de Investigaciones Universidad del Quindio, 2015, Vol 27, Issue 2, p40
- ISSN
1794-631X
- Publication type
Academic Journal
- DOI
10.33975/riuq.vol27n2.53