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Baraut, India

Kumar A.,Amity University | Kumar V.,Digamber Jain College | Suthar B.,Government Engineering College | Singh K.S.,Digamber Jain College | Ojha S.P.,IIMT
Optik | Year: 2014

Reflection and transmission properties of one-dimensional plasma/polystyrene nonlinear photonic crystal have been investigated theoretically. Reflectance and transmitted amplitude of electromagnetic waves through these periodic multilayered structures are calculated for different intensities of controlling wave. It is found that the reflectance of the proposed structures depends on the intensity of the controlling wave and this property can be exploited in the design of WDM coupler, filter, optical logic gates, etc. © 2013 Elsevier GmbH.

Malik J.V.,Janta Vedic College | Jindal K.D.,Shri Venkateshwara University | Kumar V.,Shri Venkateshwara University | Kumar V.,Digamber Jain College | And 3 more authors.
Advances in Optical Technologies | Year: 2013

The effect of the temperature and angle of incidence on the photonic band gap (PBG) for semiconductor-based photonic crystals has been investigated. The refractive index of semiconductor layers is taken as a function of temperature and wavelength. Three structures have been analyzed by choosing a semiconductor material for one of the two materials in a bilayer structure. The semiconductor material is taken to be ZnS, Si, and Ge with air in first, second, and third structures respectively. The shifting of band gaps with temperature is more pronounced in the third structure than in the first two structures because the change in the refractive index of Ge layers with temperature is more than the change of refractive index of both ZnS and Si layers with temperature. The propagation characteristics of the proposed structures are analyzed by transfer matrix method. © 2013 J. V. Malik et al.

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