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Analysis of a metal clad waveguide sensor having metamaterial as a guiding layer

Upadhyay A., Prajapati Y. K., Tripathi R., Singh V., Saini J. P.

Opto-Electronics Review

2016

Vol. 24, No. 2

47--57

In this study a metal clad waveguide sensor with a metamaterial guiding layer is analyzed. Sensitivity of the proposed sensor is derived using dispersion and Fresenal’s equations for waveguiding mode and reflection mode. While efficiently analyzing and comparing the results with the existing one, some interesting findings are achieved. It is observed that the proposed sensor shows larger cover layer sensitivity and larger adlayer sensitivity compared to the dielectric guiding layer sensor due to adsorbtive properties of metamaterial. Henceforth, it concludes that the proposed sensor shows sensitivity improvement over a dielectric guiding layer sensor.

Sensitivity enhancement of metamaterial-based surface plasmon resonance biosensor for near infrared

Pal S., Prajapati Y. K., Saini J. P., Singh V.

Optica Applicata

2016

Vol. 46, nr 1

131--143

The present study investigates the angular response and sensitivity of a surface plasmon resonance biosensor with metamaterial, by taking the advantage of the remarkable property of metamaterials. The proposed biosensor numerically shows that silver with a metamaterial layer enhances the sensitivity. The thickness of metamaterial and silver layer has been optimized. On comparing these results with a conventional surface plasmon resonance biosensor, it is observed that the sensitivity of the proposed biosensor is improved by introducing the metamaterial. The proposed biosensor has a sensitivity 6.3124 times higher than that of the conventional surface plasmon resonance sensor.

Effect of plasma on modal dispersion characteristics of elliptical Bragg waveguide

Prajapati Y., Saini J. P., Chauhan D. S., Singh V.

Opto-Electronics Review

2014

Vol. 22, No. 1

16-23

In this paper, the dispersion characteristics of a plasma filled elliptical Bragg waveguide is investigated. The modal characteristic equations of the proposed Bragg waveguide for both ω > ωp and ω < ω p are derived. The effects of plasma frequency, numbers of cladding layers and the eccentricity of elliptical Bragg waveguide on the dispersion characteristics are studied. The analysis shows that the introduction of plasma in the proposed waveguide allows to control the propagation of modes.