The book includes five sections that cover the following subtopics as follows:* Optical Fiber Fundamentals including fiber materials and characteristics, fiber design, analysis, fabrication, test, etc; * Optical Fibers including all conventional and special fibers; * Optical Fiber Devices including all passive and active fiber devices and components, such as fiber couplers, fiber connectors, fiber gratings, fiber amplifiers and fiber lasers; * Optical Fiber Communication including main optical fiber communication techniques and systems * Optical Fiber Sensing including main optical fiber sensing and systems.