124 Fiber Optic Essentials
 The following ITU standards deal with optical amplifiers:
EDFAs, line amps, booster amps, and optical amplifier subsystems are described
Remotely pumped amplifiers are described in G.973.
 Miller and Chylworth (1985) Optical Communications, Prentice Hall.
 DeCusatis, C. (ed.) (2002) Handbook of Fiber Optic Data Communications 2nd
edition, Academic Press.
 Bass, M. (ed.) (2001) Handbook of Optics, vol. III, McGraw-Hill.
 Dutton, H. (1999) Understanding Optical Communications, IBM Press.