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Why IT Professionals Choose Fiber Optic Cables.

Why IT Professionals Choose Fiber Optic Cables.

When you are building a network that requires long distances, high speeds, and/or heavy bandwidth connections, there is no question: fiber optic cables win the day.

To understand why, and where, copper cables may still be the best solution, it’s important to understand the differences between the two.

Both cable types transmit data but in unique ways. Copper carries electrical pulses along its metal strands. Fiber optics carry pulses of light along flexible glass threads. This difference often equates to the fiber being the best solution for a new or upgraded network, and therefore, being worth the heavier up-front investment.

5 Reasons IT Pros Choose Fiber Optic Cables

1. Fiber optic transmission is faster

The standard way to measure data transmission rates is via bandwidth. These days, we measure it in gigabits of data per second (Gbps), or even terabits per second (Tbps).

Copper-based transmissions currently max out at 40 Gbps, whereas fiber optics can carry data at close to the speed of light. In fact, the bandwidth limits imposed on fiber are primarily theoretical but have been tested to be measurable in hundreds of terabits per second.

2. Fiber optic transmission can cover greater distances

Both copper and fiber-based signaling suffers from attenuation or a weakening of the waveform signal over distance. However, fiber optic cables can transmit data over much longer distances. In fact, the differences are vast.

Copper cables are limited to lengths of 100 meters (~330 ft.), per governing standards. Longer distances are theoretically possible but may introduce other problems, preventing copper from being a reliable transmission method at greater distances. Fiber optic cabling, depending on signaling and type of cable, can transmit up to well over 24 miles!

3. Fiber optic cables are impervious to electromagnetic interference (EMI)

By its very nature, the electrical signaling in a copper network connection generates a field of interference around the cables. When you have multiple cables running near one another, this interference can bleed into the nearby cables, hindering the desired messaging. This is referred to as crosstalk and can force expensive retransmission of the message, or even pose security risks.

The light transmission in fiber optics does not generate any EMI, so fiber winds up being more secure, and requires less retransmission, ultimately leading toward a stronger ROI.

4. Save space and enhance cable management

Fiber optic strands are extremely narrow. In fact, they’re measured in microns or millionths of a meter. The most common fiber optic strand is the same diameter as human hair. Yet as we’ve seen, they can transmit incredible amounts of data, at much higher speeds, over much longer distances than their less narrow copper counterpart. Fiber optic cables require protective sheathing, which “fattens” them up to a least two millimeters in width.

A single standard category 6 copper cable is roughly four times that width and carries a fraction of the data. When you use fiber, it takes up much less space and is more flexible (and therefore easier to manage).

There are additional bonuses to this size reduction in cabling mass: the freed-up space enables better circulation of a data center’s cooled air, makes it easier to access the equipment it’s plugged into, and generally just looks much more aesthetically pleasing.

5. Fiber optics are future-proof

Every year, the amount of data we consume increases, as do bandwidth requirements. Investing in a modern fiber optic cabling infrastructure will allow your network to operate at future speeds without replacing the cabling.

A solid multi-fiber backbone in a structured environment will last for years, if not decades, and likely continue to support increasing bandwidth needs. The average lifespan of a copper category specification, on the other hand, is a little over five years.

Also, remember the technologies and equipment that use cabling (switches, signaling optics, servers, etc.) decrease in cost as time goes by. It is therefore probable that high-end connectivity will become even more affordable in the future.

The Takeaway for IT Pros Choosing Fiber or Copper Cables

The right medium for your network really depends on your needs. However, if you have significant bandwidth needs, investing in a robust, scalable infrastructure will pay for itself.

As we’ve seen, fiber optic cabling allows for greater ROI via its faster speeds, increased durability, cleaner signaling, and smaller physical footprint. Copper cables have their applications and will help reduce the upfront costs. A combination approach, with an eye toward future growth, will suit you well.

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