Title :
Twin-Wave-Based Optical Transmission With Enhanced Linear and Nonlinear Performances
Author_Institution :
FutureWei Technol. Inc., Huawei R&D USA, Bridgewater, MA, USA
Abstract :
We review recent progresses on the use of twin-wave-based diversity schemes to enhance optical transmission performances in both nonlinear and linear regimes. Phase-conjugated twin waves with and without spectral redundancy are presented. The implications to perturbation-based fiber nonlinearity compensation are discussed. Performance enhancement techniques for real-valued orthogonal frequency-division multiplexed (OFDM) signals with a built-in Hermitian symmetry, as well as positive-valued OFDM twin signals suitable for cost-effective intensity modulation and direct detection, are also discussed.
Keywords :
OFDM modulation; intensity modulation; optical modulation; optical signal detection; perturbation theory; redundancy; OFDM twin signal direct detection; built-in Hermitian symmetry; cost-effective intensity modulation; linear performance enhancement; nonlinear performance enhancement; orthogonal frequency division multiplexed signal; perturbation-based fiber nonlinearity com- pensation; phase-conjugated twin wave-based optical transmission; spectral redundancy; twin wave-based diversity scheme; Nonlinear distortion; OFDM; Optical fiber amplifiers; Optical transmitters; Signal to noise ratio; Coherent communications; discrete multi-tone; fiber nonlinearity; optical transmission; orthogonal frequency-domain multiplexing (OFDM);
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2014.2383317
