ALERT

[FREE DEMO] Deploy Your Enterprise Cloud in Minutes

Add/Drop Multiplexer (ADM)

Definition - What does Add/Drop Multiplexer (ADM) mean?

An add/drop multiplexer (ADM) is a critical element of an optical fiber network. It can combine (i.e. multiplex) several low-bandwidth streams of data into a single light beam; and simultaneously, it can drop or remove other low-bandwidth signals from the stream of data and direct them to other network routes. The filtering technology used with ADM is called Fabry-Pérot etalon.

Techopedia explains Add/Drop Multiplexer (ADM)

Thank of an ADM as an on-ramp/off-ramp to a high-speed optical fiber network.

Add/drop multiplexers can be used for both expensive long-haul core networks and shorter distance networks, called metro networks. The expense in long-haul core networks comes from adapting (i.e. scaling) the technology to the high-speed data rates and the dense wavelength division multiplexing (DWDM), i.e. a technology allowing a number of carrier signals of different wavelengths (or colors) of laser light to be carried on a single optical fiber.

Recent changes in ADM technology, called multi-service provisioning platform (MSPP), is composed of equipment with legacy ADM equipment capabilities but with cross-functionality, allowing direct connections from local area networks (LANs) to an ISPs (Internet Service Providers) or other service provider’s optical fiber backbone.

Many carriers are investing in metro optical networks with an ever increasing variety of ADMs. Many of these are reconfigurable optical add-drop multiplexers (ROADMs) capable of remotely switching data traffic from a wave-length division multiplexing (WDM) system at the wavelength layer, i.e. switching based on wavelength.

Techopedia Deals

Connect with us

Techopedia on Linkedin
Techopedia on Linkedin
Tweat cdn.techopedia.com
"Techopedia" on Twitter


'@Techopedia'
Sign up for Techopedia's Free Newsletter!

Email Newsletter

Join thousands of others with our weekly newsletter

Resources
The 4th Era of IT Infrastructure: Superconverged Systems
The 4th Era of IT Infrastructure: Superconverged Systems:
Learn the benefits and limitations of the 3 generations of IT infrastructure – siloed, converged and hyperconverged – and discover how the 4th...
Approaches and Benefits of Network Virtualization
Approaches and Benefits of Network Virtualization:
Businesses today aspire to achieve a software-defined datacenter (SDDC) to enhance business agility and reduce operational complexity. However, the...
Free E-Book: Public Cloud Guide
Free E-Book: Public Cloud Guide:
This white paper is for leaders of Operations, Engineering, or Infrastructure teams who are creating or executing an IT roadmap.
Free Tool: Virtual Health Monitor
Free Tool: Virtual Health Monitor:
Virtual Health Monitor is a free virtualization monitoring and reporting tool for VMware, Hyper-V, RHEV, and XenServer environments.
Free 30 Day Trial – Turbonomic
Free 30 Day Trial – Turbonomic:
Turbonomic delivers an autonomic platform where virtual and cloud environments self-manage in real-time to assure application performance.