Temperature Tunable Silica Liquid Gallium Nonlinear Omnidirectional One Dimensional Photonic Crystal

  • Dr. Arvind Sharma

Abstract

A one dimensional (1D) Photonic crystal (PhC) is periodic optical nanostructure. The temperature effect on the photonic bang gap of Silica Liquid Gallium nonlinear omnidirectional one dimensional Photonic crystal is investigated using transfer matrix method (TMM). Gallium is a promising material for futuristic photonic devices due to its nonlinear optical and structural phase change transition properties. The theoretical design of a one dimensional dielectric/metal (Silica /Liquid Gallium) nonlinear omnidirectional photonic crystal is proposed for photonic band gap device. Investigation of 20 layers one dimensional photonic crystal, where Silica and Liquid Gallium are respectively a low refractive index material () and a high refractive index material ().The refractive index of both the materials nonlinearly depends on the intensity and wavelength and both materials are nonlinear optical materials. The proposed quarter wave stack structure is investigated in the form air ()20air. The temperature effect on the omnidirectional reflection (ODR) and omnidirectional transmission (ODT) for this structure at normal incidence for TE and TM mode has been calculated by using transfer matrix method .The results show that if the incident wavelength of the light is optical communication suitable 1550 nm then by increasing the temperature the photonic bang gap increases. It is noted that by increasing the temperature the ODR and ODT band shifted towards longer wavelength and also broaden slightly. The ODR and ODTphotonic band gap tunable bytemperature that means a single device can be used as multi omnidirectional photonic band gap. The proposed device may be useful to understand natural photonic crystals. This device may be used as optical and photonic applications such as optical filters, optical light modulators, optical sensors and optical logic gates etc.

Published
2019-12-21
Section
Articles