A long-range surface plasmon-polariton waveguide ring resonator as a platform for (bio)sensor applications

被引：17

作者：

Diniz, Lorena O. ^{[1
]}

Marega, Euclydes, Jr. ^{[2
]}

Nunes, Frederico D. ^{[3
,4
]}

Borges, Ben-Hur V. ^{[1
]}

机构：

[1] Univ Sao Paulo, Dept Elect Engn, Sao Carlos Sch Engn, BR-13566590 Sao Carlos, SP, Brazil

[2] Univ Sao Paulo, Inst Phys, BR-13560950 Sao Carlos, SP, Brazil

[3] Univ Fed Pernambuco, DES, Grp Engn Informacao, BR-50670000 Recife, SP, Brazil

[4] Univ Sao Paulo, IFSC INOF, BR-13560970 Sao Carlos, SP, Brazil

来源：

JOURNAL OF OPTICS | 2011年 / 13卷 / 11期

基金：

巴西圣保罗研究基金会;

关键词：

plasmonics; surface plasmon polaritons; SPP; ring resonators; quality factor; NANOSCALE OPTICAL BIOSENSOR; FINITE-WIDTH; METAL; SALINITY; FILTERS; NANOPARTICLES; CONFINEMENT; REFLECTOR; BANDGAP; MODES;

D O I：

10.1088/2040-8978/13/11/115001

中图分类号：

O43 [光学];

学科分类号：

070207 [光学];

摘要：

A ring plasmon-polariton resonator has been investigated and proposed as a promising platform for (bio) sensor devices. Many applications related to sensitive, miniaturized, and lab-on-a-chip devices can be realized with the structure proposed in this work. This structure consists of a rib-type ring configuration employing a metallic film sandwiched by dielectric layers. The adopted operating wavelength is lambda = 1550 nm. Our theoretical investigation shows that the proposed structure not only has low loss, and consequently a long propagation distance (2.17 mm), but also a good lateral field confinement and a quality factor Q(tot) approximate to 1146. This high quality factor is essential for sensing applications where the conductivity of analyte mixtures is allowed to vary.

引用

页数：7

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