Athermal Narrow-Band Filters Based on Side-Modulated Bragg Gratings

被引：7
|
作者：
Chen, Jingye [1 ]
Zhang, Runzhou [1 ]
Shi, Yaocheng [1 ]
机构：
[1] Zhejiang Univ, Ctr Opt & Electromagnet Res, State Key Lab Modern Opt Instrumentat, Hangzhou 310058, Zhejiang, Peoples R China
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2018年 / 30卷 / 13期
基金：
中国国家自然科学基金;
关键词：
Wavelength filtering devices; Bragg grating; temperature-insensitive; silicon photonics; SILICON-ON-INSULATOR; WAVE-GUIDES; FABRICATION; RESONATORS; OPERATION; DESIGN;
D O I：
10.1109/LPT.2018.2841001
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：
An athermal Bragg grating filter with a narrow bandwidth is proposed and demonstrated. By integrating side modulated Bragg gratings pillars to silicon-on-insulator slot waveguides, the narrow bandwidth of the wavelength filter can be achieved. With the negative thermo-optic coefficient SU-8 polymer top cladding, the device can he designed to be temperature-insensitive. The proposed Bragg grating filter, with a narrow 3-dB bandwidth around 0.75 nm, can be easily fabricated with only one fully etched step and large corrugation depth. The measured temperature dependence of the fabricated Bragg grating filter is -3 pm/degrees C.
引用
收藏
页码：1226 / 1229
页数：4
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