Information Technology

Gartner Glossary

Reconfigurable Optical Add/Drop Multiplexers (ROADMs)

Reconfigurable optical add/drop multiplexers (ROADMs) are the wavelength division multiplexing (WDM) equivalent of the add/drop multiplexing that has been used in the Synchronous Digital Hierarchy (SDH) and Synchronous Optical Network (SONET) markets for more than a decade. ROADMs enable communications service providers (CSPs) to automate the way individual wavelengths of WDM systems are routed through their networks, mainly in ring configurations, with protection switching and easy provisioning being the major benefits.

Experience Gartner virtual conferences

Master your role, transform your business and tap into an unsurpassed peer network through our world-leading virtual conferences.

Gartner Webinars

Expert insights and strategies to address your priorities and solve your most pressing challenges.