The FOA Reference Guide is the collection of free resources offered by the Fiber Optic Association Inc. for everyone in fiber optics to find technical information and directions on the design, installation and operation of fiber optic networks. Overview Of Optics And Optical Fiber Communication: Topic Covered: History of fiber optic systems, block diagram, Fiber material, fiber cables and fiber fabrication, Propagation of light in optical fiber, acceptance angle, numerical aperture, Types and specification of optical fiber, Advantages of. OPTICAL FIBER COMMUNICATIONS, FOURTH EDITION Published by McGraw-Hill, a business unit of The McGraw-Hill Companies, Inc., 1221 Avenue of the Americas, New York, NY 10020. Copyright © 2011 by The McGraw-Hill Companies, Inc. It also known as an optical fiber where the signals are digital pulses or continuously modulated analog streams of l ght to representing information.