Global key players of Optical Fiber Amplifier include Coherent, VIAVI Solutions, Accelink Technologies Co., Lumentum and Cisco, etc. Global top five manufacturers hold a share nearly 50%. Applications include materials processing. A Fiber Amplifier is an amplifier used to amplify optical signals. When optical signals are propagated in an optical fiber, they are attenuated by transmission or distribution, and the amplifier compensates for this. Narrow down on the list of companies based on their location and capabilities. 7 billion by 2033 at a CAGR of 9.