Numerical analysis of a miniaturized design of a Fabry-Perot resonator based on silicon strip and slot waveguides for bio-sensing applications

被引：24

作者：

Butt, M. A. ^{[1
,2
]}

Khonina, S. N. ^{[1
,3
]}

Kazanskiy, N. L. ^{[1
,3
]}

机构：

[1] Samara Natl Res Univ, Dept Tech Cybernet, Moskovkoye Shosse 34, Samara 443086, Russia

[2] Nicolaus Copernicus Univ, Inst Phys, Fac Phys Astron & Informat, Grudziadzka 5, PL-87100 Torun, Poland

[3] RAS, Branch FSRC Crystallog & Photon, Samara, Russia

来源：

JOURNAL OF MODERN OPTICS | 2019年 / 66卷 / 11期

基金：

俄罗斯基础研究基金会;

关键词：

Miniaturized design; Fabry-Perot resonator; finite-element method; slot waveguide; strip waveguide; sensor; BRAGG GRATINGS; OPTICAL-FIBER; COUPLERS; COMPACT;

D O I：

10.1080/09500340.2019.1609613

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A miniaturized design of a Fabry-Perot resonator based on silicon strip and slot waveguide is presented. The corrugated Bragg gratings and a cavity are structured on both sides of a waveguide. The spectral characteristics of both the resonator designs are studied. The variation of the medium refractive index is detected by monitoring the shift of the spectral maxima of the Fabry-Perot cavity. The transmission spectrum and electric field distribution of the sensor structures are simulated using finite-element method. The resonator based on slot-waveguide shows better sensitivity and figure of merits as compared to strip waveguide. Our proposed sensor design has the potential to find further applications in biomedical science and nano-photonic circuits.

引用

页码：1172 / 1178

页数：7

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