Cwdm versus Dwdm
To finest describe DWDM (coarse wavelength division multiplexing) and DWDM (dense wavelength division multiplexing), you must first learn how WDM (wavelength division multiplexing) operates. WDM is multiplexing several optical signals about the same fibre by utilizing wavelengths that happen to be essentially colours of the laser light; to transmit several signals including 2 . 5Gbps to 40Gbps. The device that connects the signals together is a multiplexor, and the one that splits these people apart one the other side of the coin end is known as a demultiplexer. The theory lurking behind WDM is that it enables you to transmit and receive info through several optical programs which is called WDM. This includes wavelength division multiplexing and consistency division multiplexing.
Wavelength is essentially the colour of the lazer being sent; an easy presentation of this with the form of a wonderful rainbow (with gold and cotton candy at each end). Each funnel is showed as a female laser that transmits info across the network. So in theory, each color of the range (data) can be transmitted through the mux (multiplexer) to form one particular data entity, which in turn comes out of the demux (demultiplexer) and spreads the rainbow to be able to the acquiring side from the network and vice versa and even bidirectional.
At this point, there are a number of differences between CWDM and DWDM technology. Firstly, DWDM is the mass in regards to dietary fibre applications, but in saying that, the price tag on the technology is very large, and this is when CWDM was introduced through popular. Also, the channel spacing through CWDM is wider, therefore going out of room to get more light in a single fibre, which in turn leads to regarding 5 or 6 wavelengths. CWDM uses a modulation laserlight which is an uncooled lazer, DWDM works on the cooling lazer. A cooling down laser music by temp, whilst the uncooled laser adopts digital tuning. Temp tuning can be difficult to acquire accurate benefits because the temperature is in extremely wide parts...
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