What are the advantages of optical fiber

Optical fiber is the abbreviation of optical fiber, which is a light transmission tool achieved by the principle of total reflection of light in fibers made of glass or plastic. Usually, the transmitting device at one end of the optical fiber uses a light emitting diode (LED) or a laser beam to transmit light pulses to the optical fiber, and the receiving device at the other end of the optical fiber uses a photosensitive element to detect the pulse.

Fiber cabling process

What are the advantages of optical fiber

1. Bandwidth

The width of the frequency band represents the size of the transmission capacity. The higher the frequency of the carrier, the wider the frequency bandwidth over which the signal can be transmitted. In the VHF frequency band, the carrier frequency is 48.5MHz ~ 300Mhz. The bandwidth is about 250MHz, and it can only transmit 27 sets of TV sets and dozens of sets of FM radio. The frequency of visible light reaches 100,000 GHz, which is more than one million times higher than the VHF frequency band. Although the optical fiber has different losses for different frequencies of light, the frequency bandwidth is affected, but the frequency bandwidth in the lowest loss region can reach 30000 GHz.

2. Low loss

In a system composed of coaxial cables, the best cables have a loss of more than 40dB per kilometer when transmitting 800MHz signals. In contrast, the loss of optical fiber is much smaller. When transmitting 1.31um light, the loss per kilometer is less than 0.35dB. If it transmits 1.55um light, the loss per kilometer is even smaller, which can reach less than 0.2dB. That's 100 million times less power loss than coaxial cable, allowing it to travel much farther. In addition, there are two characteristics of optical fiber transmission loss. One is that it has the same loss in all cable TV channels, and it does not need to be equalized by an equalizer like a cable trunk; the other is that its loss hardly changes with temperature, so don't worry about it. Fluctuations in mains level due to changes in ambient temperature.

3. Light weight

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

4. 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 signal transmitted in it is not affected by electromagnetic fields, so optical fiber transmission has strong resistance to electromagnetic interference and industrial interference. Also because of this, the signal transmitted in the optical fiber is not easy to be eavesdropped, which is conducive to confidentiality.

5. High fidelity

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. Actual tests show that the triple beat ratio C/CTB of a good AM fiber optic system is above 70dB, and the intermodulation index cM is also above 60dB, which is much higher than the nonlinear distortion index of a general cable trunk system.

6. Reliable working performance

We know that the reliability of a system is related to the number of devices that make up the system. The more equipment there is, the greater the chance of failure. Because the fiber optic system contains a small number of devices (not dozens of amplifiers like the cable system), the reliability is naturally high, and the life of the fiber optic equipment is very long, with a trouble-free working time of 500,000 to 750,000 hours. Among them, the laser in the optical transmitter has the shortest life span, and the minimum life span is more than 100,000 hours. Therefore, the working performance of a well-designed, correctly installed and debugged optical fiber system is very reliable.

7. Costs keep falling

Due to the abundant sources of materials (quartz) for making optical fibers, the cost will be further reduced with the advancement of technology; while the copper raw materials required for cables are limited, and the price will become higher and higher. Obviously, optical fiber transmission will occupy an absolute advantage in the future and become the most important transmission means for establishing cable TV network.

Provide fiber optic network cabling services for newly replaced offices, workshops, computer rooms, etc. such as factories:

1. Fiber optic wiring: fiber optic network planning, fiber optic network design, fiber optic wiring scheme design, fiber optic wiring construction, etc.

2. Optical fiber network integrated wiring: fiber material selection, fiber optic network bandwidth planning, line construction, fiber optic network relocation, etc.

3. Broadband network integrated wiring: LAN establishment, wireless network coverage, broadband network rectification.

What are the processes of fiber optic cabling

1. Understand the customer's network requirements, network bandwidth usage, field visits, investigate and study the fiber optic network environment and the building structure of the wiring site, and collect architectural drawings, wiring materials and other relevant information.

2. Provide fiber optic cabling solutions according to customer needs and provide fiber optic cabling and network equipment references.

3. Carry out standardized and standardized construction according to the optical fiber wiring solution, and test and inspect each information point of the optical fiber.

4. Customer acceptance and completion of fiber optic wiring project.

The above is the whole content of what are the advantages of optical fiber and what are the processes of optical fiber wiring. I think you have a more substantial understanding of optical fiber after seeing this, and I hope to give you some help.