Ang presidente sa Egypt bag-o lang nakig-istorya kay Dimitri Kopilosis, tsirman sa Greek power company nga Kopilosis, the construction of a submarine cable to transport Egyptian-generated renewable energy through Greece to Europe.
Cables are not only underground and overhead, but also submarine cables. Submarine cables are wires wrapped in insulating materials and laid under the sea and rivers for telecommunications transmission.
The following ZMS cable editor will introduce some basic lines of submarine cables in the world.
Una, understand some basic information about submarine cables.
Ang istruktura sa pagkakabukod sa kable sa dagat parehas ra sa kable sa yuta. Apan tungod kay ang kable gigamit sa labi ka komplikado nga palibot kaysa sa yuta, the designers have given it an extra set of “soft Hedgehog armor” to protect it from damage.
Ang mga kable sa submarino mahimong maklasipikar sa upat ka paagi.
Kini nag-una nga gibahin ngadto sa tulo ka-core submarino kable ug single-core submarino kable.
Ang mga linya sa medium ug ubos nga boltahe kasagaran naggamit sa tulo ka mga kable sa dagat, while high voltage lines mostly use single-core sea cables.
Half a century ago, sea cables were only used for power transmission.
Today’s cables integrate two functions: electricity and signals are sent on the same cable.
It can be divided into oil-filled insulating sea cables and plastic insulating sea cables.
It can be divided into DC cable and AC cable.
Dc submarine cable is characterized by low loss, and easy to achieve long-distance transmission.
Hinuon, the application experience of DC submarine cable is not rich, the cost of supporting construction such as DC converter station is high, and the loss of AC submarine cable is high.
Undersea communications are 100 years older than the Internet. It’s just that undersea communication was done by cable.
The Anglo-French Telegraph Company began laying the world’s first submarine cable between Britain and France in 1850 when it could only transmit Morse telegraph codes.
In 1866, Britain successfully laid a transatlantic submarine cable between the United States and Britain.
The first transatlantic telegraph communication between Europe and the United States was realized.
Into the 1950s, as the Internet began to emerge.
People have higher requirements for the quality of calls and the speed of data transmission in submarine communication.
And that’s when the world’s first laser came out in 1960.
People begin to try to transmit data in an optical fiber by means of a laser.
In 1988, the first Transocean Undersea cable (TAT-8) system between the United States, Britanya, and France was completed.
The speed is much faster than the submarine cable, which also marks the official arrival of the submarine cable era.
With the rapid development of the Internet, the construction of global Haitian optical cable is also accelerating.
There are currently more than 230 submarine cables in use, connecting six continents except for Antarctica.
So far, how many undersea cables has China connected to the world?
The answer is eight submarine cables (not including Hong Kong and Taiwan), which are described in detail below.
In terms of submarine optical cables, we will first introduce the Asia Pacific region:
The AP-2 submarine optical cable is 19,000 kilometers long and uses four pairs of fiber cores, each pair of 64*10Gbps DWDM fiber technology, with a design capacity of 2.56Tbps/s.
It mainly connects China, Japan, South Korea, Singapore, Malaysia, and other regions. Among them, the landing station on the mainland is Shanghai and Shantou.
The East Asia Undersea cable System and city-to-city undersea cable are 36,800 kilometers long.
It mainly connects mainland China, Hong Kong, Japan, South Korea, Taiwan, Singapore, and the Philippines, with landing stations in Qingdao and Shanghai in mainland China.
The Sino-Japanese submarine optical cable, nga adunay kinatibuk-ang gitas-on sa 1,300 kilometro, adopts PDH System teknolohiya sa optical fiber nga adunay kapasidad nga optical fiber nga 560Mbps.
Kini kasagarang gigamit alang sa internasyonal nga long-distance nga telepono ug digital circuit nga mga serbisyo tali sa China ug Japan, ug ang landing station sa mainland China mao ang Shanghai.
Southeast Asia ug Japan submarine optical cable, nag-una nga nagkonektar 8 mga nasud ug rehiyon sa Southeast Asia ug Japan.
Ang kinatibuk-ang gitas-on mao ang 10,700 kilometro, naggamit 6 mga parisan sa fiber cores, 64*40Gbps DWDM fiber nga teknolohiya, ug fiber nga kapasidad hangtod sa 15Tbps.
Taliwala niini, the landing station in the mainland area is Shantou.
If you look at the undersea cables connecting Southeast Asia connecting the Middle East connecting Europe and so on, global submarine cable
It is the world’s first major international undersea cable system connecting Asia, sa Middle East, and Europe simultaneously.
A total length of 27,000 kilometro, using two pairs of fiber cores, each pair of 5Gbps DWDM fiber technology, with fiber capacity up to 10Gbps, among which the mainland landing station is Shanghai.
Sa pagkakaron, ang Eurasian submarine optical cable mao ang pinakamahal ug pinakadugay (39,000 km) submarine optical cable, moagi sa kadaghanang nasod ug rehiyon sa kalibotan.
Gisagop niini ang duha ka parisan sa fiber cores, matag parisan sa 48*10 Gbps DWDM optical fiber nga teknolohiya, ug ang optical fiber nga kapasidad mao ang 960Gbps.
Ang mga landing station sa mainland mao ang Shanghai ug Shantou.
Sa kataposan, ang duha ka ilawom sa dagat nga mga kable nga nagkonektar sa North America:
Ang sino-us submarine cable nag-una nga nagkonektar sa Asia ug North America, nga adunay kinatibuk-ang gitas-on sa 30,800 kilometro.
Nagsagop kini 4 mga parisan sa fiber cores, each pair of 8*2.488Gbps SDH over DWDM fiber technology, and the optical fiber capacity is 80Gbps.
The landing stations in mainland China are Shanghai and Shantou.
The Sino-US direct submarine optical cable is the world’s first direct submarine high-speed (trans-Pacific) optical fiber cable, nga adunay kinatibuk-ang gitas-on sa 26,000 kilometro. Nagsagop kini 8 mga parisan sa fiber cores, 64*10Gbps DWDM optical fiber nga teknolohiya, and the optical fiber capacity is 5.12Tbps.
The landing stations in mainland areas are Shanghai and Qingdao.
Through the above introduction, sayon nga makita ang gidaghanon sa mga landing station ug ang gidaghanon sa submarine fiber optic cables.
Ang Mainland China gamay ra kung itandi sa mga ugmad nga mga nasud sa Europe ug Estados Unidos.
But the benefits are obvious – to strengthen network security protection.
Nahibal-an nimo, ang parehas nga submarino nga fiber optic cable magdala sa mga hulga sa seguridad sa network, ug ang China aduna ray upat ka landing station nga gitugotang makasulod.
Naghatag kini og dakong kasayon alang sa pagpanalipod sa seguridad.
Kana mao, kinahanglan ra nimo nga palig-onon ang mga kapabilidad sa pagpanalipod sa seguridad niining upat ka mga entrada aron mapanalipdan batok sa mga hulga sa seguridad sa gawas sa network.
Ang naa sa ibabaw mao ang impormasyon nga gidala sa Ang tiggama sa ZMS cable.
Ingon nga ang kalibutan paspas kaayo nga milambo, ang paggamit sa elektrisidad nagkadaghan ug ang lainlaing mga kahinguhaan nga magamit nga padayon nga gipalambo.
Ang mga kable kinahanglanon alang sa paggamit sa elektrisidad, mao nga nagkadako usab ang panginahanglan matag tuig.
Ang kompanya sa kable sa ZMS kanunay nga nabalaka bahin sa pag-uswag sa kable, kanunay nagsunod sa paghatag og taas nga kalidad nga cable, maayong bili, mahunahunaon nga serbisyo, ang produkto human sa higpit nga manual qualification audit, kasaligan.
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