Temperature Tunability of Dielectric/ Liquid Crystal / Dielectric Photonic Crystal Structures

Recently, photonic crystals doped with liquid crystal (LC) material havegained much research interest. In this article new ternary one-dimensional photoniccrystal introduced and studied. The liquid crystal layer of 5CB and 5PCH is sandwichedby two dielectric layers. For the first time, we use four structures SiO2/UCF35/CaF2,SiO2/5CB/CaF2, NFK51/UCF35/NPSK53 and NFK51/5CB/NPSK53. The effect oftemperature on transfer band gap of these photonic crystals is investigated withtransferred matrix method. The results show that in all four structures PBG forextraordinary ray (ne) is very large than ordinary ray (no) and with increasing oftemperature, PBG shifts to red wavelength. PBG width is very vast and variation of thefigure with respect temperature is very sharp for SiO2/UCF35/CaF2 structure. Also, thesuggested design takes high tunability due to the infiltration of the LC material. One canuse the proposed structure