Used Extreme 51034 Switch Modules for Sale
Short Description: Used / Refurbished Extreme Networks Black Diamond WDMi Switch Module - Line Card - Blade - Multiplexer (Extreme Networks 51034). (Extreme Black Diamond 6800 series)
If you are looking to buy new or used and refurbished Extreme Switch Modules, you can stop searching. Vology has over $50 million of inventory stocked in our warehouse. In addition, we have one of the largest sourcing networks in the industry to locate your Extreme 51034 fast at the best price possible. |
51034 Product Specifications
The BlackDiamond 51034 is a WDMi 6800 1-port 8-Channel Wavelength Division Multiplexing (WDM) SC-APC Module.
The Black Diamond 51034 Blade belongs to the Extreme Black Diamond I Series Blade Family.
What is a Multiplexer?
A multiplexer or mux is a device that selects one of many data-sources and outputs that source into a single channel. In electronics, multiplexers function as multiple-input, single-output switches. A multiplexer has multiple inputs and a selector that connects a specific input to the single output.In digital signal processing (DSP), the multiplexer takes several separate digital data streams and combines them together into one data stream of a higher data rate. This allows multiple data streams to be carried from one place to another over one physical link, which saves cost.
Wavelength-Division Multiplexing
In fibre-optic communications, wavelength-division multiplexing (WDM) is a technology which multiplexes multiple optical carrier signals on a single optical fibre by using different wavelengths (colours) of laser light to carry different signals. This allows for a multiplication in capacity, in addition to making it possible to perform bidirectional communications over one strand of fibre. "The true potential of optical fibre is fully exploited when multiple beams of light at different frequencies are transmitted on the same fibre. This is a form of frequency division multiplexing (FDM) but is commonly called wavelength division multiplexing.The term wavelength-division multiplexing is commonly applied to an optical carrier (which is typically described by its wavelength), whereas frequency-division multiplexing typically applies to a radio carrier (which is more often described by frequency). However, since wavelength and frequency are inversely proportional, and since radio and light are both forms of electromagnetic radiation, the two terms are closely analogous.
Extreme 51034 is a WDM System
A WDM system uses a multiplexer at the transmitter to join the signals together, and a demultiplexer at the receiver to split them apart. With the right type of fibre it is possible to have a device that does both simultaneously, and can function as an optical add-drop multiplexer. The optical filtering devices used in the modems are usually etalons, stable solid-state single-frequency Fabry-Perot interferometers in the form of thin-film-coated optical glass.WDM systems are popular with telecommunications companies because they allow them to expand the capacity of the network without laying more fibre. By using WDM and optical amplifiers, they can accommodate several generations of technology development in their optical infrastructure without having to overhaul the backbone network. Capacity of a given link can be expanded by simply upgrading the multiplexers and demultiplexers at each end.
This is often done by using optical-to-electrical-to-optical translation at the very edge of the transport network, thus permitting interoperation with existing equipment with optical interfaces. Most WDM systems operate on single mode fibre optical cables, which have a core diameter of 9 µm. Certain forms of WDM can also be used in multi-mode fibre cables (also known as premises cables) which have core diameters of 50 or 62.5 µm. Early WDM systems were expensive and complicated to run. However, recent standardization and better understanding of the dynamics of WDM systems have made WDM much cheaper to deploy. Optical receivers, in contrast to laser sources, tend to be wideband devices. Therefore the demultiplexer must provide the wavelength selectivity of the receiver in the WDM system.
WDM systems are divided in different wavelength patterns, conventional, dense and coarse WDM. Conventional WDM systems provide up to 16 channels in the 3rd transmission window (C-band) of silica fibres around 1550 nm with a channel spacing of 100 GHz. DWDM uses the same transmission window but with less channel spacing enabling up to 31 channels with 50 GHz spacing, 62 channels with 25 GHz spacing sometimes called ultra dense WDM. New amplification options (Raman amplification) enable the extension of the usable wavelengths to the L-band, more or less doubling these numbers.
