This is a collection of articles that will give you a good idea how does the fibre internet works.
First off, what is FTTH or Fibre to the home?
Fiber-to-the-home broadband connections, or FTTH broadband connections, refer to fiber optic cable connections for individual residences. Such optics-based systems can deliver a multitude of digital information — telephone, video, data, et cetera — more efficiently than traditional copper coaxial cable for about the same price. FTTH premises depend on both active and passive optical networks to function.
A key benefit to FTTH — also called FTTP, for “fiber-to-the-premises” broadband — is that it provides for far faster connection speeds and carrying capacity than twisted pair conductors, DSL or coaxial cable. For example, a single copper pair conductor can carry six phone calls. A single fiber pair can carry more than 2.5 million phone calls simultaneously
The technology continues to grow worldwide, the FTTH Council reported. The number of countries where FTTH broadband connections were making big gains continued to grow in number. The report listed 14 countries in which more than 1 percent of households had FTTH connections, up from 11 the year before. The group reported that 2007 was the best year in terms of new FTTH subscribers worldwide. Japan, China and the United States led the way with almost 6 million new FTTH households between them.
As demand for broadband capacity continues to grow, it’s likely governments and private developers will do more to bring FTTH broadband connections to more homes.
Read more: How Fiber-to-the-home Broadband Works
Now, we take a macro view of what happen to the data or packet that you sent and received.
To understand the Internet, it helps to look at it as a system with two main components. The first of those components is hardware. That includes everything from the cables that carry terabits of information every second to the computer sitting in front of you.
Other types of hardware that support the Internet include routers, servers, cell phone towers, satellites, radios, smartphones and other devices. All these devices together create the network of networks. The Internet is a malleable system — it changes in little ways as elements join and leave networks around the world. Some of those elements may stay fairly static and make up the backbone of the Internet. Others are more peripheral.
These elements are connections. Some are end points — the computer, smartphone or other device you’re using to read this may count as one. We call those end points clients. Machines that store the information we seek on the Internet are servers. Other elements are nodes which serve as a connecting point along a route of traffic. And then there are the transmission lines which can be physical, as in the case of cables and fiber optics, or they can be wireless signals from satellites, cell phone or 4G towers, or radios.
Two of the most important protocols are the transmission control protocol (TCP) and the Internet protocol (IP). We often group the two together — in most discussions about Internet protocols you’ll see them listed as TCP/IP.
What do these protocols do? At their most basic level, these protocols establish the rules for how information passes through the Internet. Without these rules, you would need direct connections to other computers to access the information they hold. You’d also need both your computer and the target computer to understand a common language.
You’ve probably heard of IP addresses. These addresses follow the Internet protocol. Each device connected to the Internet has an IP address. This is how one machine can find another through the massive network.
First, you open your Web browser and connect to our Web site. When you do this, your computer sends an electronic request over your Internet connection to your Internet service provider (ISP). The ISP routes the request to a server further up the chain on the Internet. Eventually, the request will hit a domain name server (DNS).
This server will look for a match for the domain name you’ve typed in (such as www.howstuffworks.com). If it finds a match, it will direct your request to the proper server’s IP address. If it doesn’t find a match, it will send the request further up the chain to a server that has more information.
The request will eventually come to our Web server. Our server will respond by sending the requested file in a series of packets. Packets are parts of a file that range between 1,000 and 1,500 bytes. Packets have headers and footers that tell computers what’s in the packet and how the information fits with other packets to create an entire file. Each packet travels back up the network and down to your computer. Packets don’t necessarily all take the same path — they’ll generally travel the path of least resistance.
Read more: How does the Internet work?
More in-depth technicality can be found here: How Internet Infrastructure Works