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Today's DWDM ROADM (Reconfigurable Optical Add-Drop Multiplexer) platforms can also be used in resilient mesh topologies, and various protective mechanisms and schemes can be applied to assure dependability.
FREMONT, CA : Optical networking refers to a set of technologies and solutions that enable massive amounts of data to be transmitted via a single network link. Optical networking is a highly effective way to build a scalable, high-capacity network while also releasing the capacity locked up in a dark fiber pair.
Data signals from various sources can be combined, or multiplexed using Wavelength Division Multiplexing (WDM) technologies like coarse Wavelength Division Multiplexing (CWDM) or Dense Wavelength Division Multiplexing (DWDM), so they can share a single dark pair while maintaining complete separation of the individual data streams. DWDM technology is used by businesses spanning many industries as a vital part of their long-haul, core, and metropolitan area networks because it can manage so much data and transfer across lengthy lines between geographically distant sites. WDM and optical networking have the following major advantages.
Flexibility and Resiliency
Optical transport systems can be used in various topologies (P2P, Linear Chain, Ring). Furthermore, today's DWDM ROADM (Reconfigurable Optical Add-Drop Multiplexer) platforms can also be used in resilient mesh topologies, and various protective mechanisms and schemes can be applied to assure dependability.
Overcome Distance Limitations
DWDM systems competent of supporting links beyond 120km and up to thousands of kilometers with optical amplifiers and signal regeneration aptitudes, optical transport systems are capable of transmitting enormous loads of capacity over long distances.
Today's WDM networks can also provide simple, integrated management solutions that boost operational efficiency dramatically. DWDM networks combined with ROADM technology enable enterprises to create network connections quickly, easily, and dynamically, allowing them to deploy high-bandwidth services in days rather than months. Furthermore, their staff can remotely discover and handle issues in much less time.
As a single fiber may be split into multiple channels, CWDM and particularly DWDM systems are easily expanded. Without expensive improvements, more capacity may be added when demand changes, either through simple equipment updates or by expanding the number of wavelengths used on the fiber. Additional services can be switched up on available wavelengths as the optical transport network expands and progresses. Active line card modules can be exchanged for units that give higher bandwidth service rates or adopt muxponders to transport multiple data streams over a single wavelength. Thus, capacity can be achieved at a fraction of the cost of the equipment, and the existing fiber mill investment can be preserved.
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