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A surface-plasmon-resonance (SPR) sensor based on photonic-crystal-fiber (PCF) with large size microfluidic channels is proposed. The size of the microfluidic channels with gold coating can be enlarged by reducing the number of the holes in the second layer, so the structure of the PCF is simple and easy to manufacture. It is propitious for metal coating and infiltration of microfluidic. The contact area of sample and metal film is increased, and the interface is closer to the core, so the energy coupling between the plasmon mode and the core-guided mode is easier. Numerical results indicate that the excitation of the plasmon mode is sensitive to the change of the refractive index of adjacent analyte. Sensitivity of the sensor is comparable to the ones of the best existing waveguide sensors. The amplitude resolution is demonstrated to be as low as 3.3×10-5 RIU, and the spectral resolution is 5×10-6 RIU (where RIU means the refractive index unit). The refractive index of microfluidic can be measured effectively.
Czasopismo
Rocznik
Tom
Strony
481--491
Opis fizyczny
Bibliogr. 7 poz., rys., wykr.
Bibliografia
- [1] SLAVIK R., HOMOLA J., CTYROKY J., Miniaturization of fiber optic surface plasmon resonance sensor, Sensors and Actuators B 51(1–3), 1998, pp. 311–315.
- [2] SCHMIDT M.A., PRILL SEMPERE L.N., TYAGI H.K., POULTON C.G., RUSSELL P.ST.J., Waveguiding and plasmon resonances in two-dimensional photonic lattices of gold and silver nanowires, Physical Review B 77(3), 2008, article 033417.
- [3] BYOUNGHO LEE, Review of the present status of optical fiber sensors, Optical Fiber Technology 9(2),2003, pp. 57–79.
- [4] BYOUNGHO LEE, SOOKYOUNG ROH, JUNGHYUN PARK, Current status of micro- and nano-structured optical fiber sensors, Optical Fiber Technology 15(3), 2009, pp. 209–221.
- [5] WU D.K.C., KUHLMEY B.T., EGGLETON B.J., Ultrasensitive photonic crystal fiber refractive index sensor, Optics Letters 34(3), 2009, pp. 322–324.
- [6] SAZIO P.J.A., AMEZCUA-CORREA A., FINLAYSON C.E., HAYES J.R., SCHEIDEMANTEL T.J., BARIL N.F.,JACKSON B.R., DONG-JIN WON, FENG ZHANG, MARGINE E.R., GOPALAN V., CRESPI V.H., BADDING J.V.,Microstructured optical fibers as high-pressure microfluidic reactors, Science 311(5767), 2006,pp. 1583–1586.
- [7] HAUTAKORPI M., MATTINEN M., LUDVIGSEN H., Surface-plasmon-resonance sensor based on three--hole microstructured optical fiber, Optics Express 16(12), 2008, pp. 8427–8432.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BPW7-0027-0006