For Introduction to Fiber Optics, Fundamentals of Fiber Optics, Fiber-optic Communications courses at the undergraduate level. The text is thorough, up to date, and provides comprehensive and intuitive introduction to fiber optics. With mathematics limited to basic algebra, the book takes a practical approach to understanding fiber optics. It thoroughly describes important concepts for the novice, building up an understanding of optical fibers, their properties, light sources and detectors, and fiber-optic components and their application in fiber-optic systems. It covers the basics of fiber-optic measurement and troubleshooting. Interwoven are illustrations show important principles.