COMPENSATION FOR NONLINEAR DISTORTION OF OPTICAL OFDM SIGNALS INDUCED BY ELECTRO-ABSORPTION MODULATED LASERS WITH DIGITAL PREDISTORTION

被引：0
|
作者：
Shang, Haiyan [1 ]
Li, Zhaohui [2 ]
Bao, Yuan [2 ]
Gui, Tao [2 ]
机构：
[1] Shandong Univ, Sch Informat Sci & Engn, Jinan, Peoples R China
[2] Jinan Univ, Inst Photon Technol, Jinan, Peoples R China
来源：
2012 11TH INTERNATIONAL CONFERENCE ON OPTICAL COMMUNICATIONS AND NETWORKS (ICOCN 2012) | 2012年
关键词：
Digital predistortion (DPD); nonlinear distortion; electro-absorption modulated laser (EML); memoryless nonlinear model; optical orthogonal frequency division multiplexing (O-OFDM); MEMORY; TRANSMISSION; MODEL; GB/S;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this paper, we demonstrated a digital predistortion (DPD) algorithm to linearize an electro-absorption modulated laser (EML) used to modulate a 40-Gbps orthogonal frequency division multiplexing (OFDM) signal onto an optical carrier. We characterized the EML as a nonlinear model based on memoryless polynomials. The nonlinear coefficients were estimated by a linear method. And the predistortion function of the EML was achieved with these estimated coefficients. The experimental results indicated that the DPD algorithm is an efficient method to compensate for the nonlinear distortion in EMLs.
引用
收藏
页码：56 / 59
页数：4
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