Optical Signal Phase Reconstruction Based on Temporal Transport-of-Intensity Equation

被引：13
|
作者：
Matsumoto, Masayuki [1 ]
机构：
[1] Wakayama Univ, Fac Syst Engn, Wakayama 6408510, Japan
来源：
JOURNAL OF LIGHTWAVE TECHNOLOGY | 2020年 / 38卷 / 17期
关键词：
Optical fibers; Optical receivers; Optical fiber communication; Optical fiber dispersion; Direct detection; optical fiber communication; phase retrieval; transport-of-intensity equation; RETRIEVAL; DISPERSION; RECOVERY;
D O I：
10.1109/JLT.2020.2995640
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：
A non-iterative reconstruction scheme of phase modulated optical signals using dispersive media in direct-detection receiver is described. The phase retrieval is achieved by solving the temporal transport-of-intensity equation (TIE). The TIE is solved by the use of Fast Fourier Transform algorithm. Required carrier power added to the signal is examined and it is shown that carrier power larger by 2 to 3 dB than that needed in the Kramers-Kronig receiver. The carrier can be located inside the signal spectrum, lifting the condition that the signal needs to be single-sideband with tightly confined spectrum. The noise immunity in solving the TIE, which will be an issue in practical usage of the scheme, is also discussed.
引用
收藏
页码：4722 / 4729
页数：8
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