Abstract

A performance comparison between a recently proposed novel technique known as fast orthogonal frequency-division multiplexing (FOFDM) and conventional orthogonal frequency-division multiplexing (OFDM) is undertaken over unamplified, intensity-modulated, and direct-detected directly modulated laser-based optical signals. Key transceiver parameters, such as the maximum achievable transmission capacity and the digital-to-analog/analog-to-digital converter (DAC/ADC) effects are explored thoroughly. It is shown that, similarly to conventional OFDM, the least complex and bandwidth efficient FOFDM can support up to ∼20 Gb/s over 500 m worst-case multimode fiber (MMF) links having 3 dB effective bandwidths of ∼200 MHz × km. For compensation of the DAC/ADC roll-off, a power-loading (PL) algorithm is adopted, leading to an FOFDM system improvement of ∼4 dB. FOFDM and conventional OFDM give similar optimum DAC/ADC parameters over 500 m worst-case MMF, while over 50 km single-mode fiber a maximum deviation of only ∼1 dB in clipping ratio is observed due to the imperfect chromatic dispersion compensation caused by one-tap equalizers.

©2012 Optical Society of America

Adaptive Loading Algorithms for IMDD Optical OFDM PON Systems Using Directly Modulated Lasers

E. Giacoumidis, A. Kavatzikidis, A. Tsokanos, J. M. Tang, and I. Tomkos
J. Opt. Commun. Netw. 4(10) 769-778 (2012)

Adaptability-Enabled Record-High and Robust Capacity-Versus-Reach Performance of Real-Time Dual-Band Optical OFDM Signals Over Various OM1/OM2 MMF Systems [Invited]

Emilio Hugues-Salas, Qianwu Zhang, Roger Philip Giddings, Min Wang, and Jianming Tang
J. Opt. Commun. Netw. 5(10) A1-A11 (2013)

Hybrid DFT-Spread OFDM-Digital Filter Multiple Access PONs for Converged 5G Networks

Y. X. Dong, W. Jin, R. P. Giddings, M. O’Sullivan, A. Tipper, T. Durrant, and J. M. Tang
J. Opt. Commun. Netw. 11(7) 347-353 (2019)

Real-time demonstration of 128-QAM-encoded optical OFDM transmission with a 5.25bit/s/Hz spectral efficiency in simple IMDD systems utilizing directly modulated DFB lasers

X.Q. Jin, R.P. Giddings, E. Hugues-Salas, and J.M. Tang
Opt. Express 17(22) 20484-20493 (2009)

A PAPR Reduction Technique Based on a Constant Envelope OFDM Approach for Fiber Nonlinearity Mitigation in Optical Direct-Detection Systems

Jair A. L. Silva, Adolfo V. T. Cartaxo, and Marcelo E. V. Segatto
J. Opt. Commun. Netw. 4(4) 296-303 (2012)