The trend of optical cable for communication, the development trend of optical fiber communication

In 2010, the overall supply of the global optical fiber and cable industry exceeded demand, and the capacity utilization rate was still at a high level. Since the second half of 2008, the market demand has improved significantly, and the optical fiber and cable industry has been in short supply in 09; Looking forward to 2010, it is expected that the demand for optical fiber will be about 800090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 In addition, from the perspective of global demand, the demand for optical fiber and cable will also increase with the impact of the recovery of global telecom investment.

In 2010, the decline of optical fiber ** has been a consensus. Judging from the survey, several major optical fiber factories are expected to decline in 2010, and the bidding may drop from 86 yuan in 09 to 75-80 yuan, a decline of 7%-13%. In general, due to the high concentration of the optical fiber and cable market, the ability of collaboration and communication between manufacturers has been improved, and the influence on the industry has also been improved, and the decline is expected to be within 10% in the context of still strong industry demand.

Gross profit margin is under pressure at both ends. It is expected that in 2010, the optical fiber will decline, and the probability of the increase in optical fiber raw materials is larger, mainly due to the increase in demand for optical fibers, and the global optical rod production capacity is full, the growth is relatively small, and it is expected that the imported optical rod may increase by 5%-10%; Under the effect of the two, the gross profit margin of the industry will fall, roughly falling back to the level of 08.

In the medium and long term, the prosperity of the optical fiber and cable industry is still supported. There are two main supporting factors: first, the development of the global optical communication industry, especially in China, is in a 5-10 year boom period due to the promotion of 3G, FTTX, triple play and other factors, and the demand is strong; Second, optical fiber preforms are expected to make industry breakthroughs next year, and are expected to achieve localization in the next five years, which will strongly promote domestic optical fiber exports and form a new industry growth momentum.

According to the situation of each family, if conditions permit, every household needs optical cables.

Optical fiber is a very good communication transmission medium at present. Due to the advantages of low cost, fast transmission speed, large capacity and light weight of optical fiber, whether it is in wired or mobile communication, it has to rely on him to complete the transmission of signals. Now telecommunications is carrying out optical advances and copper retreats, and China has carried out several triple play integration pilots, and optical fibers must be used everywhere. ......

The development trend of optical fiber communication: pure optical, that is, the signal is completely processed through the optical path, and there is no longer optical-electrical-optical conversion during the process; Intelligent, that is, all configurations can be intelligently and flexibly modified and controlled; Integration, the integration of all optical devices into the chip, so that the optical devices to achieve the current level of electronic chip integration, of course, this goal is very far away :)

1. The meaning is different.

Communication cables are cables that transmit **, telegraph, fax files, television and radio programs, data, and other electrical signals.

Fiber optic cables are manufactured to meet optical, mechanical, or environmental performance specifications, and are communications cable assemblies that utilize one or more fibers placed in a jacket as the transmission medium and can be used individually or in groups.

2. The composition is different.

A communication cable is made up of more than one pair of wires that are insulated from each other stranded together.

Fiber optic cables are mainly made of optical fibers.

Thin as a hair-thin glass filament) and plastic protective sleeve and plastic sheath, there is no gold, silver, copper and aluminum and other metals in the optical cable, and there is generally no value. A fiber optic cable is a certain number of optical fibers composed of a cable core in a certain way, covered with a sheath, and some are also covered with an outer sheath.

3. The transmission signal is different.

Cables transmit electrical signals. Optical cable transmission is a kind of communication line that realizes optical signal transmission.

A through-wire cable is a cable that transmits **, telegraph, fax files, television and radio programs, data, and other electrical signals. It is made by twisting more than one pair of wires that are insulated from each other. Compared with overhead open wires, communication cables have the advantages of large communication capacity, high transmission stability, good confidentiality, and less affected by natural conditions and external interference.

Optical fiber cable is a communication cable assembly that utilizes one or more optical fibers placed in an enveloping jacket as the transmission medium and can be used individually or in groups.

First, there is a difference in material. The cable is made of metal (mostly copper and aluminum) as the conductor; Fiber optic cables use glass fibers as conductors.

Second: there is a difference in the transmission signal. Cables transmit electrical signals. Fiber optic cables transmit optical signals.

Third: there is a difference in the scope of application. Cables are now mostly used for energy transmission and low-end data information transmission (e.g. **). Fiber optic cables are mostly used for data.

Communication cables are usually rope-like cables made up of several or groups of wires (at least two in each group), each group of wires insulated from each other, and often twisted around a center, with a highly insulating covering on the outside; Specifically refers to submarine cables.

The metal can be seen when the cable is cut, but the fiber optic cable can not be seen when it is cut!

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With the continuous progress of science and technology and the continuous development of informatization, optical fiber and cable, as an important technology in the field of information transmission, is facing a number of development opportunities. The following are the four development opportunities faced by optical fiber and cable:1

The rapid development of communication services: With the wide application of new technologies such as mobile networks, Internet of Things, and communications, the demand for high-speed, large-capacity, and low-latency information transmission is also increasing, and optical fiber and cable is an important technology to meet these needs. 2.

Push for 5G network construction: The construction of 5G networks requires faster and more stable data transmission rates and larger bandwidth, and fiber optic cable is one of the important technologies to meet these needs. 3.

Acceleration of urbanization: The rapid advancement of urbanization has put forward higher requirements for the construction of urban information infrastructure, and the application of optical fiber and cable can accelerate the process of urban information infrastructure construction and improve the level of urban informatization. 4.

The rise of the industrial Internet: The development and popularization of the industrial Internet requires faster and more reliable data transmission, and the low latency, high speed and low interference characteristics of optical fiber and cable can meet the needs of the industrial Internet and become an important foundation for the construction of the industrial Internet. Hope mine can help you <>

Do you have any other questions?

Optical fiber cable is a communication cable assembly that utilizes one or more optical fibers placed in an enveloping jacket as the transmission medium and can be used individually or in groups. The optical cable is mainly composed of optical fibers (glass filaments as thin as hair) and plastic protective sleeves and plastic sheaths, and there are no metals such as gold, silver, copper and aluminum in the optical cable, and generally have no value. Optical cable is a communication line that a certain number of optical fibers are composed of a cable core in a certain way, covered with a sheath, and some are also covered with an outer sheath to realize optical signal transmission.

That is: the cable formed by the optical fiber (optical transmission carrier) through a certain process. The basic structure of the optical cable is generally composed of several parts such as the cable core, reinforcing wire, filler and sheath, and there are also waterproof layers, buffer layers, insulated metal wires and other components as needed.

Characteristics of optical fibers.

1. Loss characteristics:

Light waves are transmitted in optical fibers, and with the increase of transmission distance, and the intensity of optical power gradually decreases, the optical fiber has an attenuating effect on light waves, which is called the loss (attenuation or attenuation) of optical fibers, and the loss can be expressed as follows:

a=-10lg(pout/pin) (db)

The loss characteristics of an optical fiber are also characterized by an attenuation coefficient, which refers to the amount of attenuation caused by the optical signal traveling in a unit (typically 1 km) distance in the fiber.

a/l (db/km)

The attenuation of optical fiber** mainly includes absorption attenuation, scattering attenuation, optical fiber microbending attenuation and joint attenuation.

2. Dispersion characteristics.

Different frequencies or modes in the optical pulse have different group velocities in the optical fiber, and these frequency components and modes reach the optical fiber terminal first, so that the optical pulse is broadened, which is the dispersion of the optical fiber. Three wavelengths are transmitted in the same fiber and arrive at the receiving end, resulting in pulse broadening. There are three types of dispersion:

Mode dispersion: Different modes have different speeds and phases, resulting in different arrival times, which is the main factor affecting the bandwidth of multimode fibers.

Material dispersion: It varies with different doping concentrations and is closely related to wavelength;

Waveguide dispersion: that is, structural dispersion, which is caused by geometric structure, size, refractive index difference, etc.