Daily network transmission is mainly optical fiber and network cable. In information transmission, optical fiber seems to have many advantages, such as long transmission distance, stable signal, low attenuation, high speed, etc. Many users will definitely choose optical fiber. But looking at the current situation, the network cable still occupies an important position in many households and production areas. The PK between the two is far from over.

Let's start from the advantages of network cables and optical fibers, and discuss the irreplaceable features of each.

OM2 50/125 multimode fiber optic cable
1. The advantages of optical fiber

1. Optical fiber frequency bandwidth

The width of the frequency band represents the size of the transmission capacity. The higher the frequency of the carrier, the greater the bandwidth of the signal that can be transmitted. In the VHF frequency band, the carrier frequency is 48.5MHz～300Mhz.

2. Optical fiber has strong anti-interference ability

Because the basic component of optical fiber is quartz, it only transmits light, does not conduct electricity, and is not affected by electromagnetic fields. The optical signals transmitted in it are not affected by electromagnetic fields. Therefore, optical fiber transmission has strong resistance to electromagnetic interference and industrial interference.

3. The installation difficulty of optical fiber is less than that of network cable

The diameter of the single-mode optical fiber core wire is generally 4um～10um, and the outer diameter is only 125um. With waterproof layer, reinforcement ribs, sheath, etc., the diameter of the optical cable composed of 4～48 optical fibers is less than 13mm, which is less than the standard coaxial cable. The diameter of 47mm is much smaller, and the optical fiber is glass fiber, which has a small specific gravity, which makes it have the characteristics of small diameter and light weight, and it is very convenient to install.

4. Low optical fiber loss

It has the same loss in all cable TV channels, and there is no need to introduce an equalizer for equalization like a cable trunk; its loss hardly changes with temperature, and there is no need to worry about fluctuations in the trunk level due to changes in ambient temperature.

5. Optical fiber transmission is more reliable

Because optical fiber transmission generally does not require relay amplification, it will not introduce new nonlinear distortion due to amplification. As long as the linearity of the laser is good, TV signals can be transmitted with high fidelity. Because the optical fiber system contains less equipment, the reliability is naturally high.

2. Advantages of network cable

1. Long transmission distance and high transmission quality

Due to the advanced processing technology used in the twisted-pair transceiver, the attenuation of the video signal amplitude and the attenuation difference between different frequencies by the twisted pair are excellently compensated, and the brightness and color of the original image and the real-time performance are maintained. When the transmission distance reaches 1km or more, the image signal is basically without distortion. If the relay mode is adopted, the transmission distance will be longer.

2. Convenient wiring and high cable utilization

Any one of the widely laid network cables in the building can transmit one video signal without additional wiring. If a pair of wires are used to transmit video signals, the other pairs of wires can also be used to transmit audio signals, control signals, power supply or other signals, which improves the utilization of cables and avoids the trouble caused by separate wiring of various signals , Reduce the project cost.

3. Shielded cable has strong interference ability

Like optical fiber, the network cable can also transmit excellent image signals in a strong interference environment. Moreover, the use of several pairs of twisted pairs in a cable to transmit different signals respectively without interference with each other.

4. Professional knowledge is easier to master

Many network cables can be easily installed by themselves through simple instructions. It is also very simple to use, without professional knowledge, and without too much operation. One-time installation, long-term stable work.

5. Affordable price and convenient materials

This is one of the advantages of the network cable. Compared with the optical fiber, the price of the various network cables currently in use is much cheaper and the purchase channels are convenient.