Compensating group delay distortion of signals based on engineered material dispersion | Zendy

Chun Wang | Zendy; Zhongbo Zhu | Zendy; Cheng Cao | Zendy; Shan Qiao | Zendy; Changzhi Li | Zendy; Dexin Ye | Zendy

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Compensating group delay distortion of signals based on engineered material dispersion

Author(s) -

Chun Wang,

Zhongbo Zhu,

Cheng Cao,

Shan Qiao,

Changzhi Li,

Dexin Ye

Publication year - 2017

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4980148

Subject(s) - distortion (music) , dispersion (optics) , phase distortion , chirp , transmission (telecommunications) , group delay and phase delay , signal (programming language) , compensation (psychology) , optics , materials science , group delay dispersion , envelope (radar) , microwave , electronic engineering , modal dispersion , computer science , physics , optoelectronics , telecommunications , engineering , dispersion shifted fiber , optical fiber , bandwidth (computing) , radar , fiber optic sensor , psychoanalysis , amplifier , laser , psychology , programming language , cmos

Dispersion, which originates from the total frequency responses of materials, devices and transmission lines, makes envelope distortion of signals inevitable in transmission systems. In this study, we investigate the group delay distortion of a signal due to the presence of dispersion in transmission systems, and propose an approach to eliminate the distortion by compensation based on engineered material dispersion. We demonstrate theoretically and experimentally that utilizing the anomalous frequency response of a dispersive material, envelope distortion of a signal passing through a given transmission system can be fully compensated. Compared with previous researches on dispersion compensation using grating compressors or chirp compressors in optics and non-Foster circuits in microwave bands, the proposed approach is robust and scalable to other frequency bands

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