This book provides a comprehensive view of optical fiber communication and its applications using photonic devices. The material is well presented and is designed for undergraduate students pursuing courses in electrical engineering, and electronics and telecommunication engineering. The book offers a completely up-to-date, accessible, and in-depth introduction to the principles and applications of optical fiber communications. It describes the recent developments in optical fiber communication materials, devices, components, and systems. The coverage includes key concepts such as properties of light, semiconductor materials, photon sources, optical receivers, LED and laser transmitters, optical homodyne and heterodyne detection systems, polarization penalty, connectorization and losses in optical fiber, photon-photon multiplexing using WDM and integrated optics, built-up of long haul OFC link at 8 Mbps and 2.5 Gbps, optical fiber applications in LAN/WAN and CCTV, underneath sea communication and long haul optical fiber communication.