This instructor's guide is written to accompany to the fifth edition of Understanding Fiber Optics by Jeff Hecht, originally published by Pearson/Prentice-Hall in 2006 and later republished by Laser Light Press. It is being published now to help readers using the book in self-study of fiber optics, because nothing like it has been published since then. It includes answers to quiz questions and "questions to think about" in the book, and worked-out...