Theory of optical waveguides. Design techniques for optical waveguides. Numerical methods (FDTD, BPM etc) for optical waveguide simulations and their limitations. The use of commercial simulation and CAD layout tools to design optical waveguide devices such as directional couplers and splitters. Coupling techniques and losses in optical waveguides. Nonlinear effects and their applications. Optical modulators and optical interconnects. Recent trends and applications.