Title :
Transmission performance of adaptively modulated optical OFDM signals in multimode fiber links
Author :
Tang, J.M. ; Lane, P.M. ; Shore, K.A.
Author_Institution :
Sch. of Informatics, Univ. of Wales, Bangor, UK
Abstract :
A novel optical signal modulation concept of adaptively modulated optical orthogonal frequency-division multiplexing (AMOOFDM) is proposed and numerical simulations of the transmission performance of AMOOFDM signals are undertaken in unamplified multimode fiber (MMF)-based links using directly modulated distributed feedback lasers (DMLs). It is shown that 28 Gb/s intensity modulation and direct-detection AMOOFDM signal transmission over 300-m MMFs is feasible in unamplified DML-based links having 3-dB bandwidths of 150MHz/km. In addition, AMOOFDM is less susceptible to modal dispersion and variation in launching conditions when compared with existing schemes.
Keywords :
OFDM modulation; adaptive modulation; distributed feedback lasers; laser modes; optical fibre communication; optical fibre dispersion; optical modulation; 28 Gbit/s; 300 m; adaptively modulated signals; direct-detection signal transmission; directly modulated lasers; distributed feedback lasers; frequency-division multiplexing; intensity modulation; modal dispersion; multimode fiber links; optical OFDM signals; optical signal modulation; transmission performance; unamplified multimode fiber-based links; Adaptive optics; Distributed feedback devices; Fiber lasers; Frequency division multiplexing; Frequency modulation; Laser feedback; Numerical simulation; OFDM modulation; Optical feedback; Optical modulation; Communication system performance; optical fiber communication; optical modulation; orthogonal frequency-division multiplexing (OFDM);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2005.861631
