Author:
Gao Xudong,Xu Zhenzhu,Zhu Yupeng,Yang Chengkun,Han Shoubao,Duan Zongming,Zhang Fan,Dong Jianji
Abstract
AbstractDue to the advantages of low propagation loss, wide operation bandwidth, continuous delay tuning, fast tuning speed, and compact footprints, chirped Bragg grating waveguide has great application potential in wideband phased array beamforming systems. However, the disadvantage of large group delay error hinders their practical applications. The nonlinear group delay spectrum is one of the main factors causing large group delay errors. To solve this problem, waveguides with nonlinear gradient widths are adopted in this study to compensate for the nonlinear effect of the grating apodization on the mode effective index. As a result, a linear group delay spectrum is obtained in the experiment, and the group delay error is halved.
Graphical Abstract
Publisher
Springer Science and Business Media LLC
Subject
Electrical and Electronic Engineering,Electronic, Optical and Magnetic Materials
Cited by
1 articles.
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