A PON takes advantage of (WDM), using one wavelength for downstream traffic and another for upstream traffic on a (ITU-T, typically OS2). BPON, EPON, GEPON, and have the same basic wavelength plan and use the 1490 nanometer (nm) wavelength for downstream traffic and 1310 nm wavelength for upstream traffic. 1550 nm is reserved for optional overlay services, typically RF (analog) video.
In optical communications, WDM increases the capacity of a given fiber link by using light sources of specific narrow band spectrum or wavelengths for multiple services. These sources (transceivers) are often referred to as 'colored' optics. Wavelength division multiplexing (WDM) can help network operators stay ahead of growing demand for bandwidth. Read on to learn the fundamentals of this useful technology. Question 1: What does WDM do? In traditional fiber-based telecommunications, information is transmitted over dedicated fiber. In fiber-optic communications, wavelength-division multiplexing (WDM) is a technology which multiplexes a number of optical carrier signals onto a single optical fiber by using different wavelengths (i. By simultaneously transmitting multiple optical signals, each at a unique wavelength, through a single fiber, WDM optimizes bandwidth utilization. Communication networks were first developed for provid-ing voice telephone service. Early networks were deployed using eopper wire as the medium over which traffic was sent in the form of electromagnetic waves.
[PDF Version]
The hot aisle /cold aisle data center layout was originated by IBM in 1992 and it is one of the oldest ways to save energy in the data center. When implemented correctly, they improve efficiency, reduce energy consumption, extend equipment life, and enhance overall reliability. In this guide, we'll break down how hot aisle and cold aisle configurations. Summary: Hot aisle / cold aisle configuration is a design approach that prevents hot and cold air from mixing, raising cooling efficiency by 30-50%. An SME server room throws an overheat alarm all. Specify complete aisle containment systems for data centers, edge facilities and high-density compute rooms.
[PDF Version]We Look Forward to Working with You