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

页码：1226 / 1229

页数：4

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