What is Underwater Fiber Optic Cable?
Underwater fiber optic cable is one kind of communication fiber optic cable that is laid under water through rivers, lakes and beaches and other places. This cable laying environment conditions are much worse than the pipeline laying and direct burial laying .
How Does Underwater Fiber Optic Cable Work?
Underwater fiber optic cable has layers of steel wire or steel tape armored structure. The structure of the inner sheath and outer sheath are also needed to take into consideration according to the hydrogeological situation of the river.
For example, in the stony soil, scouring seasonal riverbed, fiber optic cable suffers from wear and tear and high tension, not only thick steel wire is needed for armoring, but even double layer of armoring is required. The method of construction should also be selected according to the river width, water depth, flow rate, river bed, flow speed, river bed soil and so on.
How Can Underwater Fiber Optic Cable Has Great Performance?
The performance of underwater fiber cable comes from its cable design, materials quality, production quality, and the laying techniques.
A perfect fiber cable design for a underwater fiber cable should consider all the conditions in its actual site, such as river bed soil quality, river width, water depth, flow rate, and other site conditions.
The raw materials and production all affect the final quality and performance of a underwater fiber optic cable. So a trustworthy brand or manufacturer is very important.
They will solve you all the problem of materials comparison with reliable quality inspection and experienced and advanced production technology.
First of all, the laying speed and specified position of the optical cable shall be controlled.
During the laying process, the optical cable shall not be vacated in the riverbed, and shall not make a small circle. It is also necessary to monitor whether the underwater fiber cable is in good condition, and solve the problem in time to ensure the laying quality of the underwater optical cable.
The laying length should be based on the length of the optical cable determined during the re-measurement route. Generally, the underwater optical cable should extend out of the embankment or the shore for 50 meters. When the design stipulates that the optical cable is laid in an arc at the bottom of the river, it should be based on the baseline at the time of measurement, and the arc should be laid upstream.
What are the Applications of Underwater Fiber Optic Cable?
Underwater fiber optic cable takes following measures to ensure the waterproof performance of the fiber optic cable to laid in lakes, rivers and beaches.
- Single wire center reinforcement
- Loose tube filled with special waterproofing compound
- Complete core filling
- Plastic coated aluminum tape (APL) moisture barrier
- Double-sided plastic-coated steel tape (PSP) improves the moisture resistance of the optical cable
- Good water blocking material to prevent longitudinal water seepage of the optical cable
When laying fiber optic cables in mountainous or hilly areas, these areas generally have steep terrain, many trees, more rocks and less soil. It is unavoidable to use a protective and good mechanical fiber optic cables.
Because underwater fiber cable has excellent tensile and flattening properties, and has a certain ability to withstand rock crushing and excessive tensile force, it is also suitable for these aeras as climbing fiber cables.
Although underwater fiber cables are laid in the lakes or rivers, it is also cab be considered as a directly buried fiber optic cable. Moreover, it has more strict requirements than normal directly buried fiber cable on the ground. So a underwater fiber optic cable is also suitable for direct burial applications.
What are the Benefits of Underwater Fiber Optic Cable?
Most fiber optic cables are installed by aerial, duct and direct buried. But when it comes to places with rivers, lakes and beaches, traditional fiber cable laying method would require lot of fiber optic cables and installation costs.
And underwater fiber optic cable perfectlly solve this problem by connecting the both ends with underwater laying. It saves lots of fiber cables, and the laying is also simplified.
Other than that, with the fiber optic cable under the rivers and lakes, it won’t be affected by wind and most animals above ground. Actually, it provide more reliable optical communication networks.
What is the Difference Between Underwater Fiber Optic Cable and Submarine Fiber Optic Cable?
As its name suggests, submarine fiber optic cable (or subsea/undersea fiber optic cable) is fiber optic cable that is laid in the ocean.
To meet the application requirements, the structure of submarine fiber optic cable requires strong and light materials, but not light metal aluminum, because aluminum and seawater will produce hydrogen by electrochemical reaction, and hydrogen molecules will diffuse into the glass material of the fiber, making the loss of the fiber larger.
Therefore, the submarine fiber optic cable must prevent both the internal generation of hydrogen and the infiltration of hydrogen into the fiber optic cable from the outside.
Most of the submarine fiber optic cables are under the sea at a certain depth and are not subject to damage from natural environment such as wind and waves and interference from human production activities. So the submarine fiber cables are safe and stable, with strong anti-interference ability and good confidentiality performance.
What is the Difference Between Underwater Fiber Optic Cable and Direct Buried Fiber Optic Cable?
Direct buried fiber optic cable refer to a fiber optic cable which has good performance of resisting external mechanical damage and preventing soil erosion.
Fiber optic units is normally armored with steel tape and other materials such as double sheath and steel wire outside, and make it is available for directly buried in the ground. Direct burial is the most convenient laying method for fiber optic cable and also save the duct and aerial installation costs.
And the major difference is that the laying environment of underwater fiber optic cable is much worse than the conditions of direct burial laying. So the underwater fiber cable must use steel wire or steel tape heavy armored structure. Which make most underwater fiber optic cable are available for direct buried laying.
In addition, the repair underwater fiber optic cable failure techniques and measures are also much more difficult, so the reliability requirements for underwater fiber optic cable is also higher than direct burial fiber optic cable.
What are the Types of Fiber Optic Cable?
According different aspect of fiber optic cable, there are many types of fiber optic cables.
Due to different transmission mode of an optical fiber, there are single mode fiber optic cable and multimode fiber optic cable.
How the fiber optic cable is structured is also an important specification of a fiber cable. There are tight buffer fiber cable, loose tube fiber cable, uni-tube fiber cable (or central loose tube), MLT (multi loose tube) fiber cable.
Different application of a fiber optic cable has different requirements on the cable installation and laying. For instance, there are overhead/aerial fiber optic cable, duct fiber optic cable, direct burial fiber optic cable and underwater fiber optic cable.
Where a fiber optic cable is used affect its specifications too. At a larger scale, we can divide them into the outdoor fiber optic cable type and indoor fiber optic cable type.
For different application and specs to meet, the fiber optic cable armoring also varies. From light armored aluminum tape fiber optic cable, corrugated steel tape armored fiber optic cable, steel wire armored fiber optic cable, and heavy armored fiber optic cable with both steel tape and steel wires.
Besides all mentioned above, some industries and network system has specific type of fiber optic cable, such as mining fiber optic cable, FTTH fiber cable, power line fiber optic cable and so on.
What are the Materials for Underwater Fiber Optic Cable?
Like all the fiber optic cables, underwater fiber optic cable are made of optical fibers in loose tubes. All loose tubes are stranded along an dielectric FRP central strength member in the inner sheath with water-blocking materials.
Sometimes, there is also a layer of corruggated steel tape wrapping the fiber core, to provide extra mechanical performance for the underwater fiber cable.
Outside the inner fiber core, there are a layer of steel wire armor (SWA) and another layer of water-blocking tape to make the underwater fiber optic cable more compact and protected from its application environment. Finally, there is an outer sheath made of PE sheath.
Does HOC Offers Underwater Fiber Optic Cable Services?
Yes, HOC provides you underwater fiber optic cable solutions with the most experienced designing and manufacturing with extreme quality, reliability, and robustness.
Moreover, thanks to our vast experience in fiber optic cable production, we know how to optimize to save your costs.
Whether it’s your first purchase or multiple purchases, you can get super solutions.
Is HOC’s Underwater Fiber Optic Cable Expensive?
Not at all. HOC underwater fiber optic cable is affordable and of high performances.
With extensive manufacturing experiences on the underwater fiber cables, we know every aspect of the required specifications and how to optimize the underwater fiber cable designing and materials costs.
How Long Does It Take for HOC’s Underwater Fiber Optic Cable to be Delivered?
It is mainly depends on your project.
For regular designs of underwater fiber cable, it generally takes 2-3 weeks to produce and to be delivered. But if the quantity is large and special fiber cable designs, it will take a little bit longer.
How Did HOC Ship the Underwater Fiber Optic Cable to Me?
For underwater fiber optic cables, we will ship the fiber cable in drums to your port.
For better coordination of all your purchased goods, we offer mix-loading services and you can also collect it at our warehouse here in China with your logistics agent.
How to Order?
You can order underwater fiber optic cable by sending your detailed requirements to our sale experts, such as specifications, length, customizations and so on.
Our specialists will get back to you with 12 hours with formal offer to move forward on productions and delivery terms. Any questions, feel free to discuss with us at any time.