The morphology and optical properties of Zn 1-x Mn x O films were synthesized by sol gel method using spin coating technique. Zn 1-x Mn x O thin films is prepared using 2methoxyethanol solution of zinc acetate dehydrate and manganese acetate tetrahydrate. The solution is stabilized by MEA. The quantity of Mn in the sol was varied from x = 0, 0.02, 0.04, 0.06 and 0.08 with annealing temperature of 600ºC. Investigation of the physical properties and presence of nanostructures were executed using SEM and XRD characterization. Addition of Mn lead to the formation of nanosize rod structures.The optical properties were characterized using UV-Vis where the band gap and transmittance can be determined. Results show that the transmittance spectra and band gap reduces after a certain percentage of Mn addition. The variation of the band gap performance with dopant concentration is also examined.
Index Term-sol gel method, Zn 1-x Mn x O thin film
In near future, silicon-on-insulator (SOI) microring resonator are expected to be basic components for wavelength filtering and switching due to their compact size and wide free spectral range (FSR). In this paper, a 2X2 optical switch by using active microring resonator is proposed. The switch is consists of second order serially cascaded microring coupled to a pair of waveguide. The ON/OFF state of the design is control by electric signal which will vary the refractive index. The device is design to operate at 1.55µm wavelength. With a 500nm x 200nm rib dimensions, the design is proven to have single mode behaviour. Finite-Difference Time-Domain (FDTD) method simulation by RSOFT software is use to characterize the device performance. The results show that the 2X2 optical switch proposed can be an efficient device to be functioning in WDM application.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.