Self-Assembled Materials Systems and Devices for R-FLICS

摘要

Electro-optic (EO) modulators based on multilayer self-assembled superlattices (SAS) from wet deposition, and from vapor phase deposition have been designed, fabricated, and characterized. Two-step wet chemical protection- deprotection approach for the growth of SAS was used for the fabrication of electro-optic modulators. With this process the SAS film can he grown at a rate of about 40 minutes per bilayer, and it is at least one order of magnitude more rapid than previous three-step deposition method. Novel approaches of self- assembly via vapor phase deposition were investigated for the growth of EO active DTPT, and PEPCOOH thin films. The EO active thin films exhibit strong second harmonic generation and EO modulation effects without external electric field poling. Promising electro-optic materials were used for the grown of EO thin films from vapor phase, and prototype electro-optic modulators were fabricated and tested by integrating the intrinsically acentric self-assembled thin films with low-loss polymeric layers and semiconductor substrates.