Reconfigurable and dual-polarization Bragg grating filter with phase change materials

被引：7
|
作者：
Wang, Yanqun [1 ,2 ]
Zhang, Jieying [1 ,2 ]
Jin, Huimin [1 ,2 ]
Xu, Peipeng [1 ,2 ]
机构：
[1] Ningbo Univ, Fac Elect Engn & Comp Sci, Ningbo 315211, Peoples R China
[2] Key Lab Photoelect Detect Mat & Devices Zhejiang, Ningbo 315211, Peoples R China
来源：
APPLIED OPTICS | 2021年 / 60卷 / 31期
基金：
中国国家自然科学基金;
关键词：
SILICON PHOTONICS; LOW-POWER; SWITCH; COUPLERS;
D O I：
10.1364/AO.439624
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Fully reconfigurable optical filters are indispensable building blocks to realize reconfigurable photonic networks/systems. This paper proposes a reconfigurable and dual-polarization optical filter based on a subwavelength grating waveguide operating in the Bragg reflection mechanism and combined with a low-loss phase change material Ge2Sb2Se4Te1. Numerical simulations indicate that, for TE(TM) polarization, the presented Bragg grating filter offers up to 20nm (17 nm) redshift with amplitude modulation of 6 dB (0.15 dB) at 1550 nm. Using the effective medium theory, we obtained the six-level crystallization performance of the optical filter. The proposed optical filter has potential applications in wavelength-division-multiplexing systems, optical signal processing, and optical communications. (C) 2021 Optical Society of America
引用
收藏
页码：9989 / 9993
页数：5
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