Optofluidic Tunable Linear Narrow-Band Filter Based on Bragg Nanocavity

被引：7
作者：
Fang, Chaolong [1 ]
Dai, Bo [1 ]
Xu, Qiao [1 ]
Wang, Qi [1 ]
Zhang, Dawei [1 ]
机构：
[1] Univ Shanghai Sci & Technol, Engn Res Ctr Opt Instrument & Syst, Minist Educ, Shanghai Key Lab Modern Opt Syst, Shanghai 200093, Peoples R China
来源：
IEEE PHOTONICS JOURNAL | 2017年 / 9卷 / 02期
关键词：
Tunable filters; fabrication and characterization; nanocavities; photonic crystals; DIELECTRIC PHOTONIC CRYSTAL; DEFECT; MODE;
D O I：
10.1109/JPHOT.2017.2655005
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：
A compact, tunable linear optofluidic Bragg filter is simulated, designed, fabricated, and characterized. The device consists of a nanocavity sandwiched by two symmetrical film stacks made of high- and low-refractive-index dielectric materials. The fabrication parameters are simulated by using the commercial software Essentical Macleod. The resonant wavelength can be linearly shifted by up to 34.8 nm when the refractive index of the liquid injected into the Bragg nanocavity varies from 1.333 to 1.51. Meanwhile, the filter has a narrow bandwidth of 1.1 nm and a very high extinction ratio of -20.2 dB with the sensitivity (Delta lambda/Delta n) of 374 nm/RIU.
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页数：8
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