Page 40 - Analysis Report of Global Market in the Submarine Cable Field (2017)

Wire and Cable

idealized that the optical fiber of second layer is located in the traverse Fig.6 The 100km plateful proportion under 250kPsi proof
interval of the first layer, as shown in figure 5.
Fig.5 Schematic diagram of fiber reel capacity

absorption peaks at 1383nm. We also introduced a high dynamic decibel
test instrument to solve the problem of instability in the PMD test.
3.Application
In the ideal case, the reel take up length L (capacity) can be calculated SeaCom marine fiber has been successfully applied to the trunk line
®
according to the formula: communication, using 72 core double armored cable, as shown in Figure 7.
The project has passed the inspection and acceptance, and the optical fiber
(5) has excellent strength performance and less splicing joints, which can meet
Fig.7 SeaCom® Optical fiber engineering application

Where, L1 is the fiber length of first layer, Ln is the fiber length of n
layer, b is the reel inner width, c is traversing pitch, d is the fiber coating
diameter, D is the barrel diameter. The capacity of a certain size reel can
be calculated by the upper mode, and the reel size can be also determined
by its capacity. In addition to capacity, it is necessary to take into account
the compressive strength, the swing amplitude of the lateral plate, as well
as the deformation and impact resistance in various states. the requirements of long distance communication.

The large length reel was designed and manufactured, the delivery 4.Conclusions
standard reel length was achieve to 100km, greatly reduced the splicing In this paper, a high reliability optical fiber (SeaCom®) is developed, which
joints of high strength fiber, meeting the requirements of long haul is suitable for long distance and less connection transmission, through the
improvement of preform manufacturing and optical fiber drawing process.
communication. The proportion of 100km segment length plateful The median tensile strength of the fiber before and after gel aging and damp
under 250kPsi tension proof test is as high as 72.9%, as shown in figure 6. heat aging is higher than 6.0GPa, the dynamic fatigue parameter is higher
than 25, the percent of standard reel length 100km under 250kPsi tension
The project optimized the deuterize processing including deuterium proof test reach 72.9%. The project also solved the deuterize treatment and
gas concentration, tank pressure and processing time, so that it still can PMD test problems of long fiber length. The SeaCom® optical fiber has been
fully replace -OH and fill the fracture of Si-O and Ge-O bond under applied in submarine optical cable, which greatly improves the reliability of
the fiber thickness increasing 8mm, effectively controlled the hydroxyl long distance submarine communication engineering.

continuing from pag 31
Table 10 China’s submarine cable market scale prediction meanwhile under the background of submarine monitoring network
construction’s speeding up, we predict that the total marine cable profit
will be twice of submarine optic cable.

Since 2015,under the background of speeding up construction of
domestic broadband,the is fast increase in demand for optic fiber
and optic cable from ZTT, Hengtong Optic-Electric, Fiberhome and
Tongguang Electric etc. Currently domestic optic fiber and cable
companies are breaking through in upstream optical wand technology,
Except for submarine optic cable, the marine cable demand of domestic with the technical barriers gradually formed. Under the background
offshore areas is also rapidly increasing, which is widely applied in oil of Belt and Road Initiative’s promotion acceleration and the overseas
drilling platforms, offshore wind power stations and cross water power demand for optical fiber and cable, we believe that the industries of
transmission areas. The marine cable and submarine optic cable are domestic submarine optic cable and marine cable etc. will usher in rapid
common in manufacturing process, some whose capacity can also be development; at the same time, the optical fiber and cable industry’s
converted. The current marine cable demand is growing continuously, booming degree is also expected to be maintained.
40 40