Archives for December 2013

Information Technology Tip Thursday – IT Salary Survey

I just read this article and thought you’d get a read also, you’ll get a good feel for the outlook of the IT employment and what the budget outlook is for many companies.

Link to Article – IT Salary Survey

Up close shot of a RJ45 plug


Tight Buffered Fiber or Loose Tube Fiber

Overview – Tight-buffered cables are commonly used in intra-building, risers, general building, plenum environments and are more commonly installed indoors. TB fiber contains a thicker coating of material around the glass strand. Loose-Tube cables are more commonly installed outdoors, aerial, duct and direct burial installations. LT fiber contains multiple strands in a tube under a jacket, the strands are loose making outside forces harder to reach them and causing issues and is more durable.

Loose-Tube Cable LT fiber starts with 6 strands then to 12 and continues to climb in increments of 12 all the way up to 244 strands. They can be dielectric, more commonly installed for pole to pole installations and armored for direct burial installs. Each modular buffer tube holds up to 12 strands and this design makes it easier for drop-offs of fiber to intermediate points without bothering other modular buffer tubes. Colored buffer coat around the glass is size 250um. Modular buffer tubes are also color coded and add protection to the strands underneath. An optional filling compound or swellable tape will fight against water penetration for underground installations. For aerial, pole to pole installations excess fiber length (relative to buffer tube length) insulates fibers from stress of installation and environmental loading and tubes are surrounded by a dielectric or steel central member and serves as a anti-buckling element.

Let’s take a quick look at an armored loose tube fiber cable from our YouTube channel.

Tight-Buffered Cable – Tight buffered cables commonly consist of an overall jacket, strength yarns and strands of fiber. Fiber jumper patch cables is a good example and you’ve probably have handled these before and are commonly installed in racks when plugging equipment together. Multi-strand TB fiber is more common in premise local area networks. The colored buffer coat is 900um in size and helps to better protect fibers during handling in space constrained areas when routing and when terminating. The yarn tensile load also keeps the load away from the fiber.

Let’s take a quick look at an indoor/outdoor tight buffered cable.

Here’s another great video from our YouTube channel comparing the 250um buffer to the 900um buffer.

If you want to go further down the rabbit hole here’s a great video by the Fiber Optic Association doing an overview on fiber optic cable.

You should have enough to chew on, we have a ton of fiber optic videos on YouTube if your interested.

Comment below and don’t forget to share! Thanks.

Information Technology Tip Thursday – Network Layer Overview

Thought this was a cool, easy and quick overview of a Network Layer.