RE: WHAT IS AN OADM ?
WHAT IS AN OADM (OPTICAL ADD/DROP MULTIPLEXER)?
An optical add-drop multiplexer (OADM) is a critical device that is used in the wavelength-division multiplexing systems for multiplexing and routing different channels of light into or out of a single mode fiber (SMF).It is one of the fundamental constructional blocks of the modern day telecommunications networks.