News

Connectors

What are the types of fibre optic connectors available and how do I know which one I need?

Types of fibre optic connectors Nowadays, we can see how the use of fibre optics for data transmission is becoming more and more common in all types of communications systems. With fibre, millions of bots per second can be transmitted, allowing access to a high-speed, high-quality service. Connectors do not distinguish between single-mode (SM) and multimode (MM) fibre, as even if they have a different core (9-10μ” for single-mode and 62.5 or 50μ” for multimode), the cladding or cladding is 125μ” for both. In plastic connectors such as LC or SC the body will be of a different colour and will indicate the type of fibre used and the polish of the ferrule. SC, LC, ST and FC connectors have a ferrule through which the fibre passes. When connectors are fitted to the equipment, through …

What are the types of fibre optic connectors available and how do I know which one I need? Read More »

Fibre optic measure instruments

Fibre optic measuring instruments

Blog – Fibre optic measuring instruments As well as copper installations have measuring instruments, in fibre optic installations it is also necessary to have fibre optic measuring equipment, with which to check that everything is working correctly (read power values, detect faults, etc.). In this new blog entry we list the main equipment available at Keynet Systems : Visual Fault Locator VFL To check a fibre for continuity with the naked eye, we use a visual fault locator (VFL). This is a device that emits visible laser light, usually red, and we can see whether or not it reaches the other end to detect a fault or identify a fibre in a bundle. The beam of light can be continuous or discontinuous and, depending on the power of the model, it can be used over …

Fibre optic measuring instruments Read More »

Submarine cables

Submarine cables. They transfer 98% of intercontinental data

Submarine cables If we ask on the street how data travel between Europe and America or Asia, most people would tell us via satellite. The reality is quite different, 98% of the data intercontinental transference is done through submarine cables. There is a gigantic network of cables that redundantly guarantee this service. The transmission capacity of these cables is absolutely amazing. In 2022, a 6,600 km long cable, owned by Google, has been inaugurated between Sopelana beach in Vizcaya and Shirley in the state of New York. The cable is about 20mm wide in diameter and has 16 pairs of fibers inside. The capacity of the whole cable is 340 million Tbits/sec. It could support each Spanish person transmitting 2,000 videos in HD simultaneously. This is the capacity we are talking about. Submarine cables are …

Submarine cables. They transfer 98% of intercontinental data Read More »

Underground cables. Different cables for different applications

Underground cables We understand by underground cables those installed below ground level. These cables may or may not be tubed. In the case of being tubed, the characteristics do not differ much from cables that are tubed in other places. Perhaps rodent attacks just have to be considered as a certain possibility. Cables can be laid by hand or pneumatically. In long runs, pneumatic laying is usually used, known as the “blowing system”. Basically the process runs using a hydraulic motor to pull the cable, while injecting pressurized air through the channel at the same time. This way, the friction between the cable and the conduit decreases and the operation is simple and fast. That is, we do not launch the cable with compressed air, the air only facilitates the sliding inside the tube. This …

Underground cables. Different cables for different applications Read More »

The jackets. Different cables for different applications

The jackets We have been emphasizing in the previous entries of this blog that different applications require different cables. And one of the most important criteria when choosing the right cable for our project is the jacket. As a general rule, we can divide fiber optic cables into single-jacket and double-sheath cables. Normally we will find double-jacket cables in outdoor uses and mainly inside pipes and aerial lines. Single PE jacket fibre cable Cable with two PE jackets When a double jacket is used, a reinforcing element is added in between them, usually fiberglass, aramid or steel reinforcement. Following the regulatory standards, if the cable is going to be installed inside a home, public place or when the projecting engineer so determines, the jacket must be made of halogen-free material and classified in accordance with …

The jackets. Different cables for different applications Read More »

Scroll to Top