Electroabsorption modulators (EAMs) are one of the very best
examples showing how a simple physical principle or idea works in the real world.
It also holds a very important place in modern high-speed fiber-optic communication
systems.
This site containes introductory information on the EAMs:
Introduction to optical modulators
Electroabsorption modulators (EAMs): their mechanisms
Design issues of the EAMs
Current status of the EAMs