This course provides attendees with a basic working knowledge of modeling and fabrication of integrated optics devices that are required in fiber communication systems. After an introduction on waveguide fabrication technologies, with focus on sol-gel and ion exchange, and characterization techniques, several devices (e.g. for WDM systems) are analyzed in detail. Current and perspective optical systems specifications and applications will be reviewed. Critical issues (such as polarization dependency of devices) are also discussed.