Fiber Optics introduces students to the fundamentals of fiber optic technology, basic ideas of fiber optical sensing, communications and networks. We start by covering the basics of waveguid theories, fiber structures, elements and devices of optical fiber networks. Light propagation through single and multi-mode optical fibers are studied, including the effects of dispersion and attenuation. The lightsources, photodetectors, and passive optical fiber devices are also covered extensively. The last part of the course focuses on nonlinearities in fibers such as self- and cross-phase modulation, Raman scattering and four-wave-mixing are discussed. Optical amplification based on erbium-doped fiber amplifiers and Raman amplifiers is also mentioned.