Fiber-optic waveguide coupled surface plasmon resonance sensor

Ahn, Jeongmin; Seong, Tae Yeon; Kim, Won Mok; Lee, Taek Sung; Kim, Inho; Lee, Kyeong Seok

doi:10.1364/oe.20.021729

Cited by 84 publications

(29 citation statements)

References 26 publications

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“…The fiber core also gets thinner by the same factor as the total fiber and eventually the evanescent wave from the core reaches the outer surface and is exposed to the surrounding medium. An SPR sensor results when a metallic layer is placed over the tapered region [28][29][30][31][32][33][34]. The ultimate refractometric sensitivity of such structures reaches 12,000 nm/RIU [29].…”

Section: Geometry-modified Fibersmentioning

confidence: 99%

Review of plasmonic fiber optic biochemical sensors: improving the limit of detection

2015

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This paper presents a brief overview of the technologies used to implement surface plasmon resonance (SPR) effects into fiber-optic sensors for chemical and biochemical applications and a survey of results reported over the last ten years. The performance indicators that are relevant for such systems, such as refractometric sensitivity, operating wavelength, and figure of merit (FOM), are discussed and listed in table form. A list of experimental results with reported limits of detection (LOD) for proteins, toxins, viruses, DNA, bacteria, glucose, and various chemicals is also provided for the same time period. Configurations discussed include fiber-optic analogues of the Kretschmann-Raether prism SPR platforms, made from geometry-modified multimode and single-mode optical fibers (unclad, side-polished, tapered, and U-shaped), long period fiber gratings (LPFG), tilted fiber Bragg gratings (TFBG), and specialty fibers (plastic or polymer, microstructured, and photonic crystal fibers). Configurations involving the excitation of surface plasmon polaritons (SPP) on continuous thin metal layers as well as those involving localized SPR (LSPR) phenomena in nanoparticle metal coatings of gold, silver, and other metals at visible and near-infrared wavelengths are described and compared quantitatively.

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Section: Geometry-modified Fibersmentioning

confidence: 99%

Review of plasmonic fiber optic biochemical sensors: improving the limit of detection

2015

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“…Surface plasmon resonance (SPR) is a popular surface analysis method used to detect changes in the refractive index or thickness of an adsorbed layer on or near a SPR-active surface with high sensitivity [1][2][3][4]. With the development of SPR sensing, multichannel SPR sensors have attracted attention owing to their potential uses in multianalyte detection [5,6].…”

Section: Introductionmentioning

confidence: 99%

Compact distributed fiber SPR sensor based on TDM and WDM technology

et al. 2015

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By using a twin-core fiber (TCF), we propose and demonstrate a novel distributed SPR sensor, which employs both the time division multiplexing (TDM) technology and the wavelength division multiplexing (WDM) technology together. The proposed sensor has two sensing passages with four sensing channels (and there are two sensing channels in each sensing passage). We employ the TDM technology to realize the two passage distributed sensing, which are parallel-connection; and we employ the WDM technology to realize the distributed sensing of two channels in a sensing passage, which are series-connected. In order to realize the TDM technology, we employ a two-core fiber, which has two cores in a same cladding, being equal to dividing the traditional single core into two independent sensing zones; in order to realize the WDM technology, we employ a fiber end polishing-connecting method to adjust the resonance angle/wavelength to realize the dynamic range separation. This twin-passage four-channel twin-core fiber SPR sensor is suitable for applying in fields of the multi-channel liquid refractive index and temperature self-reference measurement.

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“…The resonance wave is coupled into a medium of higher index, in which the wave propagates in and induces SPR at each reflections within, and the out coupled output characteristics are analyzed using a spectrometer. Commonly used configuration of SPR sensors includes prism coupler , grating coupler , optical waveguide , and fiber based methods . Here, a novel configuration is proposed, using prisms for in and out coupling, a large optical glass sheet as the waveguide and amplifier for resonant wave, and the output is guided into a multiple channel fiber spectrometer for analysis.…”

Section: Introductionmentioning

confidence: 99%

Characteristics of optical glass plate refractive index sensor based on surface plasmon resonance

Tang

Lin

Hsiao

et al. 2014

Micro & Optical Tech Letters

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This work presents a novel refractive index sensor structure based on surface plasmon resonance, consisting of planar glass plates coated with multilayer thin film. The glass plate guides the light, the multilayer metallic thin film excites the surface plasmon wave, and the dielectric film is used to fine tune the resonance wavelength. The ABSTRACT: Structures with shunt stubs in a subharmonic ratio that realize bandpass performance have limited application due to the inherent problem of fixed transmission zero positions in the stopband. By application of the principle of splitting, the subharmonic stubs into cascades of transmission line sections, structures can be realized that have transmission zeros at arbitrary positions. A bandpass filter employing stepped impedance stubs is developed, and it is shown that moderate bandwidth can be achieved.

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Fiber-optic waveguide coupled surface plasmon resonance sensor

Cited by 84 publications

References 26 publications

Review of plasmonic fiber optic biochemical sensors: improving the limit of detection

Review of plasmonic fiber optic biochemical sensors: improving the limit of detection

Compact distributed fiber SPR sensor based on TDM and WDM technology

Characteristics of optical glass plate refractive index sensor based on surface plasmon resonance

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