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17 Mar 2017

Nowadays, the deployment of DWDM solution has been hotly debated in many enterprise networks, especially in the new Lay2 and Lay3 equipment like Arista 7500E series switches. For many enterprises, DWDM network solutions are undoubtedly the best choices of action, because they can provide a scalable and elastic solution for the enterprise that offered high bandwidth and data separation. This article will demonstrate DWDM solutions to Arista 7500E switches which are the foundation of two-tier open networking solutions for cloud data centers.

Analysis of DWDM System

DWDM (Dense Wavelength Division Multiplexing) is a technology allowing high throughput capacity over longer distances commonly ranging between 44-88 channels and...



07 Mar 2017

Growing demands of the internet users is one of the reasons that lead using wavelength division multiplexing (WDM) networks to transmit optical data. So, what is WDM? WDM is a technology that multiplexes various optical signals through a single optical fiber by taking advantage of different wavelengths of laser light. And the ITU-T recommendation specifies the wavelengths used in CWDM/DWDM or OADM. All the passive fiber optic components are made of filters that only allow specific wavelength to pass through a fiber port and then the others to be reflected to another fiber ports.

WDM Network Overview

A WDM network uses a multiplexer at the transmitter to join the several signals together, and a demultiplexer at the receiver to split...



03 Mar 2017

DWDM (Dense Wavelength Division Multiplexing) is used to increase the amount of information or systems that can be transmitted over a single fiber, thus allowing allow for more channels with much tighter channel spacing. In DWDM systems, DWDM devices combine the output from several optical transmitters for transmission across a single optical fiber. At the receiving end, another DWDM device separates the combined optical signals and passes each channel to an optical receiver. This article covers DWDM system components that combine (multiplex) and separate (demultiplex) multiple optical signals of different wavelengths in a single fiber.

Optical Transmitters/Receivers

As the light sources in a DWDM system, the optical transmitters...