Planar Optical Sensors and Evanescent Wave Effects

Burke, Conor S.; Stránik, Ondrej; McEvoy, Helen M.; MacCraith, Brian D.

doi:10.1007/1-4020-4611-1_10

Cited by 7 publications

(6 citation statements)

References 23 publications

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“…Indeed, the Fermi golden rule states that the spontaneous radiation rate is affected by the photon mode density which in turn is determined by the dielectric environment. Thus, as it was experimentally reported and theoretically analyzed [18,19], the emission from a dipole at the interface of two dielectric materials is not isotropic; and most of the energy is radiated toward the high refractive index material. Figure 5a shows that the collection efficiency follows the dipole's spontaneous emission rate which in turn is affected by the waveguide modal structure.…”

Section: Theoretical Simulationsmentioning

confidence: 91%

“…When the reactor-well bottom surface is functionalized, this method helps to improve the device selectivity by reducing the thickness of the interaction region. In addition, collection is enhanced since most of the light is emitted towards the high refractive index medium when an emitter is placed near a low to high refractive index interface [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

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Evanescent-field excitation and collection approach for waveguide based photonic luminescent biosensors

et al. 2013

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A silicon oxynitride (SiON) channel waveguide based evanescent-field optical transducer is presented for lab-on-chip application. The optical biosensor detects luminescent bioanalytes infiltrated within a reactor well realized across the waveguide. As a main novelty, the sensing mechanism proposed makes use of the evanescent-field propagating in the waveguide to both excite and to collect the fluorescent signal. To understand the chip behavior, its design and collection efficiency were analyzed by finite difference time domain (FDTD) simulations in comparison with similar structures differing in the bioreactor thickness and therefore in the excitation and collection mechanisms. It is demonstrated that the best efficiency and performance is reached for the proposed dual evanescent field approach. Characterization of the optical losses and fluorescence measurements from a dye solution infiltrated in the bioreactor well validate the proposed working concept.

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Section: Theoretical Simulationsmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Evanescent-field excitation and collection approach for waveguide based photonic luminescent biosensors

et al. 2013

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“…Waveguides are optical structures capable of guiding light by total internal reflection. Waveguides have been widely used in telecommunication industry for more than 25 years; and were recently employed as a biosensor for detection and diagnosis [8][9][10][11][12][13][14][15][16][17]. Generally, in optical waveguides, the electromagnetic field of the guided light extends beyond the waveguide core, known as evanescent field which has been exploited in several ways as sensing mechanism [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

OPTICAL PLANAR WAVEGUIDE SENSOR BASED ON (Yb,Nb):RTP/RTP(001) SYSTEM FOR THE ESTIMATION OF METAL COATED CELLS

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Хонина

et al. 2016

Collection of Selected Papers of the II International Conference on Information Technology and Nanotechnology

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“…Waveguides are optical structures capable of guiding light by total internal reflection. Waveguides have been widely used in telecommunication industry for more than 25 years; and were recently employed as a biosensor for detection and diagnosis [7][8][9][10][11][12][13][14]. Generally, in optical waveguides, the electromagnetic field of the guided light extends beyond the waveguide core, known as evanescent field which has been exploited in several ways as sensing mechanism [15][16].…”

Section: Introductionmentioning

confidence: 99%

Modelling of the optical planar waveguide based on (Yb,Nb):RTP/RTP(001) system for cell counting

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Хонина

et al. 2016

2016 International Conference on Computing, Electronic and Electrical Engineering (ICE Cube)

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In this work, we demonstrated metal tagged cell counting based on planar waveguide (Yb,Nb):RTP/RTP(001) system with the help of optical simulations. This will enable the rapid counting of metal-tagged objects that lies in the evanescent field of the waveguide. This proposed design can be used for counting metal-tagged cells or other molecules that can scatter energy from the waveguide. In our approach, a visible light at 633 nm with TM polarization is used and calculated the output power in relation to the density of cells placed on the waveguide. This study can promote the fabrication of such sensor in order to record the number of cells from blood, urine, or other bio fluids. Keywords-RbTiOPO4; (Yb,Nb):RTP/RTP; reactive ion etching; planar waveguide; metal-tagged cell counting.

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Planar Optical Sensors and Evanescent Wave Effects

Cited by 7 publications

References 23 publications

Evanescent-field excitation and collection approach for waveguide based photonic luminescent biosensors

Evanescent-field excitation and collection approach for waveguide based photonic luminescent biosensors

OPTICAL PLANAR WAVEGUIDE SENSOR BASED ON (Yb,Nb):RTP/RTP(001) SYSTEM FOR THE ESTIMATION OF METAL COATED CELLS

Modelling of the optical planar waveguide based on (Yb,Nb):RTP/RTP(001) system for cell counting

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