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| Dec 3, 2009 |
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IT Management >
Systems Operations >
Networking >
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ALSO CALLED:
Fibre,
Fiber Optics,
Optical Networking
DEFINITION: A reconfigurable optical add-drop multiplexer (ROADM) is a device that can add, block, pass or redirect modulated infrared (IR) and visible light beams of various wavelengths in a fiber optic network. ROADMs are used in systems that employ wavelength division multiplexing.Before the development of optical multiplexing devices such as ROADMs, signal routing in fiber optic networks was done by converting
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Definition continues below.
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Fiber Optic Networking Multimedia
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Network providers must re-examine how they can speed up innovation and time to market by working with trusted partners and developer communities. But energizing such an ecosystem takes careful planning. This podcast discusses the lessons learned in the market for working well with application developers, and best practices for network providers.
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Clustered NAS emerges to address high-performance needs: Expert Podcast
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Traditionally, NAS systems have had limitations in throughput, connectivity, reliability and scalability. Today, a new generation of high-performance NAS is making high-availability for NAS a reality. In this expert podcast, find out about the latest trends in clustered NAS and what it means for storage pros facing increasing data storage growth.
Posted: 11 Nov 2009 | Premiered: 11 Nov 2009
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IP Telephony without Migration Migraines
sponsored by Cisco Systems, Inc.
WEBCAST:
Many organizations are hesitant to make the transition from their traditional private branch exchange (PBX) to IP telephony due to the complexity of the process. Watch this webcast to receive a complete customer-tested migration roadmap that takes the complexity out of making this switch.
Posted: 02 Oct 2009 | Premiered: 02 Oct 2009
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MPLS+ Managed Services Podcast
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In this podcast, Agatha Poon of Yankee Analyst Group answers questions about upcoming trends and changes in WAN services. She answers questions about the important trends right now in global enterprise WAN, how the WAN landscape is changing, and how new tools are playing into the market. Listen to this podcast and find out what she has to say.
Posted: 10 Jul 2009 | Premiered: 10 Jul 2009
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What Do Application Developers Want?
sponsored by Alcatel-Lucent
PODCAST:
Network providers must re-examine how they can speed up innovation and time to market by working with trusted partners and developer communities. However, energizing such an ecosystem takes careful planning. This podcast examines application developers' needs and how network providers can improve their relationships with developers.
Posted: 02 Oct 2009 | Premiered: 02 Oct 2009
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FIBER OPTIC NETWORKING DEFINITION (continued): … the IR or visible beams to electrical signals and routing those signals using conventional electronic switches. The rerouted electrical signals were then converted back into IR or visible beams.In a conventional ROADM, switching is accomplished without optical-to-electrical or electrical-to-optical conversion using three operations called add, drop and cut-through. An outgoing IR or visible beam can be generated (the add operation) or an incoming beam terminated (the drop operation). A beam can also be passed through the device without modification (the cut-through operation). In combination, … Fiber Optic Networking definition sponsored by SearchTelecom.com, powered by WhatIs.com an online computer dictionary
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