Hello, I’m Sourav Khanna and welcome to the article on network cabling part two. Today we’re going to be talking about coaxial cable, and fibre optic cabling. we will learn about what is coaxial cable in computer network? also, we will learn what is fibre cable? There’s a fair amount of ground to cover so let’s go ahead and begin this article. And of course, we’re going to begin by talking about coaxial cabling.
What is Coaxial Cable in Computer network?
coaxial or co x cabling is one of the oldest Ethernet standards for network cabling. It was standardized in 1973. It’s been used for baseband carrying just a single digital signal and it has been used for broadband carrying multiple digital signals. It is composed of a central conductor that is covered by an insulating layer, which is covered by an outer mesh or foil layer, which is then finished off with an outer insulating layer.
That inner metal mesh layer helps to protect against electromagnetic interference EMI, there are several different types of CO x cable. There is RG 58. It was used in10 base two networking, it could span a maximum distance of 185 meters and had a 50 ohms impedance value. It’s no longer commonly found in the modern network.
Then there’s RG 59. It’s commonly used to provide a broadband connection between two devices over a short distance and it has a 75 ohms impedance value. And it’s only used for short distances because it leaks its signal it can’t span very far.
Then we have RG six, which is used for cable TV or broadband. Now the distance that RG six can span varies, but it still has a 75 ohms impedance value, and it’s commonly used to make the connection to a cable modem by the cable company. There are two basic types of CO x cable connectors.
There is the BNC also known as the bayonet meal Councilman connector. You can also call it a bayonet connector. It is used with CO x cabling but is now considered obsolete. The connection from the cable to the device was achieved through a spring loaded twist lock type of connector.
A BNC coupler can also be used to connect to coax cable segments back to back much more common is the F connector. It’s a threaded bayonet connector, and it’s also used with CO x cable. An f connector coupler can be used to connect to coax cable segments back to back.
Now let’s move on to fibre optic cabling. So now let me describe fibre optic cabling.
What is Fibre Cable ? | Fibre Optic Cable
it’s relatively expensive and harder to work with than with other types of network cabling. It’s not as common as other types either co x or twisted pair in the land environment. But it can resist all forms of electromagnetic interference and it cannot be easily tapped into.
That means it’s harder for people to ease drop on your network. missions. It also can cover long distances at high speed. Fibre Optic cabling is designated by fibre type cladding size. By the way, the cladding is what the light bounces down, and it’s jacket size that outer jacket that covers the cable.
The size of the cladding and the size of the jacket are listed in micrometres. Most applications of fibre optic cabling require that the cables be run in pairs, one cable to send transmissions one cable to receive transmissions. The type of connector used on fibre optic cabling can impact the performance of the transmission.
There are two basic categories of connectors
UPC The Ultra Physical Contact
This connector has a back reflection rating of around a negative 55 decimal loss.
AAPC the angle the physical connector
It has a back reflection rating of around a negative 70-decibel loss, making it the better performing connector.
Now let’s talk about fibre types.
which uses an infrared LED system to transmit light down to the fibre. It sends multiple rays of light down the cable at the same time. It is used for shorter fibre runs under two kilometres. It is less expensive than the other type of fibre cable.
Single Mode Fiber (SMF)
it uses a laser diode arrangement to transmit light down the fibre. It only sends a single ray of light down the cable. it is going straight, it still bounces down the cladding but there’s only one of them. It’s used for longer runs that require high speed and it can span more than 40 kilometres.
So now let’s talk about fibre optic cables and connectors.
Subscriber Connector | Square Connector(SC).
You can also call it a standard connector. An easy way to remember it is a stick in click it’s a push-pull type connector.
You can also think of this as a stick and twist. It is a spring-loaded twist lock type of connector. There is also the LC which can be called the local connector or loosened connector or little connector. It’s a type of connector that uses a locking tab to secure the connection.
MTRJ(Mechanical Transfer Register Jack).
It’s a small form factor connector that contains two fibres. And that also utilizes a locking tab to secure the connection. You might also find a fibre optic coupler guess what it does, it’s used to connect to fibre optic cables back to back.
Now that concludes this article on network cabling part two, I talked about coaxial cabling, and I concluded with fibre optic cabling.