As students of our Pearson BTEC Level 5 HND Diploma in Computing and Systems Development course know, new networking technologies can save companies huge sums of money. It’s important to stay up to date with emerging technologies if networking is the role you’re looking to move into once you’ve finished your BTEC HND Diploma in Computing and Systems Development.

Today we focus on ‘Dense Wavelength Division Multiplexing’ (or DWDM for short) and how it could revolutionise the speed at which we all work.

What is DWDM?

DWDM is a technology that uses preexisting fibre optic networks and increases their bandwidth by transmitting multiple wavelengths across the same fibre. It’s the equivalent of changing a ray of light (capable of sending one piece of information), into a rainbow that’s capable of sending multiple pieces of information along each colour.

With bandwidth needs rising considerably, and set to continue, the need for a technology that can supply the demand is only getting stronger.

Why use DWDM?

New applications, government initiatives and the transitions of most business functions to e-business models are contributing to the adoption of DWDM. For a company running out of transmission capacity, DWDM is the obvious solution: state-of-the-art systems can virtualise over 150 wavelengths on a single pair of fibre, with each wavelength transporting up to 100Gbit/s. We don’t need a calculator to see that’s a significant jump in capacity.

With no new fibre optic needed for the system to begin, it could mean the cost of extremely high-speed networking would be relatively small. Another benefit is that each wavelength is blind to the others in use, making it possible to carry different types of data (something that is impossible on other networking solutions).

It’s not the only solution to the ‘fiber exhaust’ problem (running out of capacity in a fibre optic), but it certainly appears to be the best.

If you’re interested in pursuing a career in the IT industry, why not take a look at our HND Course in Computing and Systems Development; Networking Technologies is just one of the interesting modules you will study. Or, you can get in touch with an advisor.

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