標題: EAM-based high-speed 100-km OFDM transmission featuring tolerant modulator operation enabled using SSII cancellation
作者: Chen, Hsing-Yu
Wei, Chia-Chien
Lu, I-Cheng
Chen, Yu-Chao
Chu, Hsuan-Hao
Chen, Jyehong
光電工程學系
Department of Photonics
公開日期: 16-六月-2014
摘要: In this study, a technique was developed to compensate for nonlinear distortion through cancelling subcarrier-to-subcarrier intermixing interference (SSII) in an electroabsorption modulator (EAM)-based orthogonal frequency-division multiplexing (OFDM) transmission system. The nonlinear distortion to be compensated for is induced by both EAM nonlinearity and fiber dispersion. Because an OFDM signal features an inherently high peak-to-average power ratio, a trade-off exists between the optical modulation index (OMI) and modulator nonlinearity. Therefore, the nonlinear distortion limits the operational tolerance of the bias voltage and the driving power to a small region. After applying the proposed SSII cancellation, the OMI of an OFDM signal was increased yielding only a small increment of nonlinear distortion, and the tolerance region of the operational conditions was also increased. By employing the proposed scheme, this study successfully demonstrates 50-Gbps OFDM transmission over 100-km dispersion-uncompensated single-mode fiber based on a single 10-GHz EAM. (C)2014 Optical Society of America
URI: http://dx.doi.org/10.1364/OE.22.014637
http://hdl.handle.net/11536/24639
ISSN: 1094-4087
DOI: 10.1364/OE.22.014637
期刊: OPTICS EXPRESS
Volume: 22
Issue: 12
起始頁: 14637
結束頁: 14645
顯示於類別:期刊論文


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