Publication detail

Optical fiber Bragg grating used in the sensing of surface plasmon resonance

TOMÁNEK, P. GRMELA, L. ŠKARVADA, P.

Original Title

Optical fiber Bragg grating used in the sensing of surface plasmon resonance

Czech Title

Optická vláknová Braggova mřížka použitá pro snímání rezonance povrchových plazmónůce

English Title

Optical fiber Bragg grating used in the sensing of surface plasmon resonance

Type

conference paper

Language

en

Original Abstract

We introduce two types of optical fiber Bragg grating sensor with nanoscale spatial resolution and chemical specificity. This sensing technique holds promise for gaining deeper insight into the functionality of nanoscale structures superposed on the gold thin film or embedded in its complex environments. The techniques are based on the effect of surface plasmon resonance and surface plasmon resonance fluorescence. Properly p-polarized laser light illuminates the Bragg grating and induces a strongly enhanced field at the gold thin film. This is due to the coupling of guided mode of the optical fiber and surface plasmon mode. The laboratory prototype of sensor with linear Bragg grating is used for the measurement of smooth variances in refractive index and a sensor with oblique Bragg grating combined with the Scanning near field optical microscope is used for the measurement of analyte thickness. Here, the spatial resolution is determined by the tip size (typically on the order of 60-80 nm).

Czech abstract

V článku jsou popsány dva případy optického vláknového senzoru s Braggovou mřížkou, které se vyznačují nanometrickým rozlišením a chemickou citlivostí. Tato senzorová technika umožní hlubší pohled na funkčnost nanostruktur, které jsou naneseny na tenký zlatý film nebo jsou vnořeny v jeho komplexním okolí. Techniky jsou založeny na jevu rezonance povrchových plazmónů a její fluorescence. Příčně polarizované světlo dopadá na Braggovu mřížku a indukuje zesílené pole ve zlaté tenké vrstvě. To je způsobeno vazbou vedeného modu vlákna a povrchového plazmónu. Laboratorní prototyp senzoru s lineární Braggovou mřížkou je použit pro měření jemných změn indexu lomu a senzor se šikmou Braggovou mřížkou v kombinaci s rastrovacím optickým mikroskopem v blízkém poli je použit pro měření tloušťky analytu. V tomto případě je rozlišení určeno velikostí hrotu (typicky 60-80 nm).

English abstract

We introduce two types of optical fiber Bragg grating sensor with nanoscale spatial resolution and chemical specificity. This sensing technique holds promise for gaining deeper insight into the functionality of nanoscale structures superposed on the gold thin film or embedded in its complex environments. The techniques are based on the effect of surface plasmon resonance and surface plasmon resonance fluorescence. Properly p-polarized laser light illuminates the Bragg grating and induces a strongly enhanced field at the gold thin film. This is due to the coupling of guided mode of the optical fiber and surface plasmon mode. The laboratory prototype of sensor with linear Bragg grating is used for the measurement of smooth variances in refractive index and a sensor with oblique Bragg grating combined with the Scanning near field optical microscope is used for the measurement of analyte thickness. Here, the spatial resolution is determined by the tip size (typically on the order of 60-80 nm).

Keywords

sensing, optical fiber, Bragg grating, surface plasmon resonance, surface plasmon resonance fluorescence, scanning near field optical microscopy, refractive index measurement

RIV year

2007

Released

08.10.2007

Publisher

SPIE

Location

Bellingham, USA

ISBN

978-0-8194-6864-2

Book

Optomechatronic Sensors and Instrumentation III, Proceedings of SPIE, Vol. 6716

Pages from

215

Pages to

223

Pages count

9

BibTex


@inproceedings{BUT29807,
  author="Pavel {Tománek} and Lubomír {Grmela} and Pavel {Škarvada}",
  title="Optical fiber Bragg grating used in the sensing of surface plasmon resonance",
  annote="We introduce two types of optical fiber Bragg grating sensor with nanoscale spatial resolution and chemical specificity. This sensing technique holds promise for gaining deeper insight into the functionality of nanoscale structures superposed on the gold thin film or embedded in its complex environments. The techniques are based on the effect of surface plasmon resonance and surface plasmon resonance fluorescence. Properly p-polarized laser light illuminates the Bragg grating and induces a strongly enhanced field at the gold thin film. This is due to the coupling of guided mode of the optical fiber and surface plasmon mode. The laboratory prototype of sensor with linear Bragg grating is used for the measurement of smooth variances in refractive index and a sensor with oblique Bragg grating combined with the Scanning near field optical microscope is used for the measurement of analyte thickness. Here, the spatial resolution is determined by the tip size (typically on the order of 60-80 nm).",
  address="SPIE",
  booktitle="Optomechatronic Sensors and Instrumentation III, Proceedings of SPIE, Vol. 6716",
  chapter="29807",
  institution="SPIE",
  journal="Proceedings of SPIE",
  number="6715",
  year="2007",
  month="october",
  pages="215--223",
  publisher="SPIE",
  type="conference paper"
}