Download Fiber Optic Sensors Based on Plasmonics by Banshi Dhar Gupta, Sachin Kumar Srivastava, Roli Verma PDF

By Banshi Dhar Gupta, Sachin Kumar Srivastava, Roli Verma

The e-book offers an creation of floor plasmons and offers its functions within the sensing of assorted chemical and organic analyses utilizing optical fiber know-how. the sector is built through introducing the outside plasmons for semi-infinite steel dielectric interface with dialogue in their propagation size and penetration intensity. sensible concerns with the excitation of floor plasmons in several configurations and in quite a few geometries together with numerous technique of their excitation have additionally been integrated. The booklet discusses the basic elements of fiber optic sensors, their capabilities and the functionality parameters in addition to the theoretical description of fiber optic floor Plasmon Resonance (SPR) sensors with recognize to numerous mild launching stipulations. The fabrication tools and protocols used for the fabrication of the fiber optic SPR chemical and biosensors were defined. a few fiber optic sensing purposes according to SPR phenomena and diverse concerns, corresponding to sensitivity enhancement, impact of exterior stimuli and so on, were an immense a part of the e-book. The publication might help newbies in addition to confirmed researchers in knowing the basics and developments of optical fiber plasmonic sensor expertise. The booklet includes either the rigorous thought and the experimental recommendations of SPR and comparable number of sensors.

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Fiber Optic Sensors Based on Plasmonics

The publication presents an creation of floor plasmons and offers its functions within the sensing of varied chemical and organic analyses utilizing optical fiber know-how. the sector is built by means of introducing the outside plasmons for semi-infinite steel dielectric interface with dialogue in their propagation size and penetration intensity.

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6) where ko (= 2π/λ0 ) is the propagation constant of the incident electromagnetic wave in free space and β is that of the propagating wave in the medium. Since we are interested in the propagating wave solutions confined to the interface, we focus on the solutions of Eqs. 6) for the modes with exponential decay in z-direction. Decaying wave solutions of Eqs. 7) √ 2 2 Hy = De β −ko εm z , √ 2 2 Ey = Ce β −ko εm z . 1 Non-existence of SPs for TE modes The two boundary conditions for TE waves that are to be applied are given by4 : (i) Ey |boundary = continuous and (ii) ∂Ey ∂z = continuous.

In the case of waveguide, a small length of the wave-guiding layer in the middle is coated with a metal layer. The evanescent field of the guided modes of the light propagating inside the waveguide excites SPs at the metal–dielectric interface. A schematic of the excitation of the SPs in waveguide geometry is shown in Fig. 7. The maximum refractive index of the dielectric sensing medium is limited to that of page 37 May 6, 2015 4:56 38 Fiber Optic Sensors Based on Plasmonics 9in x 6in b2025-ch02 Fiber Optic Sensors Based on Plasmonics Fig.

R. K. D. Gupta, Surface plasmon resonance based multi-channel and multi-analyte fiber optic sensor, Proceedings of SPIE 8351, 83512D (2012). R. D. Gupta, Fiber optic surface plasmon resonance-based three channels multi-analyte sensor, Chemical Sensors 3 (2013) 13. page 19 May 6, 2015 4:56 20 Fiber Optic Sensors Based on Plasmonics 9in x 6in b2025-ch01 Fiber Optic Sensors Based on Plasmonics 84. R. D. Gupta, SPR based three channels fiber optic sensor for aqueous environment, Proceedings of SPIE 8992 (2014) 899209.

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