How to Choose PBT Tube Optical Fiber Cable solution?

OPGW stands for &#;Optical Ground Wire,&#; which is used in overhead power lines for grounding and communication. OPPC stands for &#;Optical Phase Conductor,&#; and&#;it&#;s&#;a&#;cable&#;with the function of phase and communication in the system.&#;OPGW and OPPC are primarily used in the energy industry. OPGW and OPPC provide telecommunication paths for internal and third-party communications.&#; 

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In addition to telecommunications, optical fiber can alert a control center of any changes to the temperature by using Distributed Temperature Sensing (DTS), providing operators with precise real-time information on the behavior and condition of the line.&#;Having&#;access to real-time&#;temperature&#;data is vital in OPPC lines.&#;Operators&#;can streamline more power through a given branch when the temperature is within the operational limit, effectively&#;creating a &#;smart&#; grid.&#; 

PBT Loose Tube and FIMT are two separate fiber optic constructions that are integratable within&#;ground wire and phase conductors.&#;This post will explore the design and properties of each cable to provide a comprehensive breakdown and determine which solution performs better in the field.&#; 

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What is PBT Loose Tube?&#;

 

Polybutylene Terephthalate (PBT) is a standout&#;material for high-end engineering applications&#;due to its excellent stain resistance, machining characteristics, and excellent short-term mechanical properties, such as high strength, toughness, and stiffness. It provides good creep resistance, dimensional stability, and low moisture absorption characteristics. The properties of PBT experience little change even in high-temperature and moist environments, making it a suitable&#;&#;material for high-voltage environments, such as power lines.&#; 

PBT Loose Tube is designed to perform in outdoor conditions, aerial, duct, and direct-buried applications. A gel is also positioned within the tube with the optical fibers underneath the protective layers. As the fibers are &#;loose&#; inside the protective jacket, they are more immune to the effects of outside forces.&#; 

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What is FIMT?&#;

 

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In contrast to PBT Loose Tube, FIMT replaces the PBT layer of protection with a metal layer that shields the optical fiber. There are countless possible configurations of FIMT, but the basic setup is a steel strip, gel, optical fibers. Optionally&#;an additional outer aluminum layer can be added to protect against environmental influences and prevent issues such as galvanic corrosion&#;for example.&#; 

Although optical fiber is widely used for long-distance transmission in integrated wiring, not many people have a deep understanding of its purchase. Today, we will explain to you how to choose high-quality optical fiber products from the aspects of optical fiber structure, materials, and craftsmanship.

Tip 1. Select fiber optic cable according to the material

Materials used in optical cables and production process The selection of optical cable materials is the key to the service life of optical cables. The manufacturing process is an important link that affects the quality of optical cables. Products with stable processes and high quality are basically not included in the additional loss of optical fibers during the entire process of optical cable production. &#;0.01dB/km is the basic data to measure the manufacturing process level of manufacturers&#; optical cables. . The main materials of optical cable are: fiber core, fiber optic ointment, sheath material, PBT (polybutylene terephthalate), they all have different quality requirements, and the fiber core requires a large power charging capacity. Higher signal-to-noise ratio, lower bit error rate, longer amplifier spacing, higher information carrying capacity; optical fiber ointment refers to the ointment filled in the optical fiber bundle tube, its function is to prevent moisture in the air Erosion of the optical fiber, the second is to act as a cushion for the optical fiber to buffer the optical fiber from vibration or impact.

Tip 2. Select fiber optic cable according to the number of cores

According to the number of cores, the structure of different types of optical cables can be divided into central beam tube type, layer twisted type, skeleton type and ribbon type. Different structures are different for different purposes. Users can put forward corresponding requirements according to the line conditions. Generally, the central beam tube type is used for the cores below 12. The center beam tube type has a simple process and low cost, and is competitive in the overhead laying or branch network with good pipeline protection; Steel wire reinforcement, using SZ continuous synthetic cable, the number of cables can reach 144 cores. Its biggest advantage is waterproof, anti-strong pulling force, strong side pressure. Can be used for direct burial. At the same time, it is easy to fork, that is, when some optical fibers of the optical cable need to be used separately, it is not necessary to disconnect the entire optical cable, but only need to disconnect the optical fiber to be bifurcated, which is very important for data communication networks. It is beneficial to add optical nodes along the cable TV network; the number of cores of the ribbon cable can be thousands of cores. It arranges 4 to 12 core optical fibers in rows to form a ribbon optical fiber unit, and then connects multiple ribbon units according to a certain Arranged into cables, our network-level optical cables generally use two types: bundle tube type and layered type.

Tip 3. Choose fiber optic cable according to the purpose

Choose the corresponding optical cable according to the purpose According to the different uses, the optical cable can be divided into overhead optical cable, direct buried optical cable, pipeline optical cable, submarine optical cable and metal-free optical cable. Aerial optical cables require high strength and a small temperature difference coefficient; direct-buried optical cables require good resistance to burial, compression, moisture, humidity, and chemical erosion; pipeline optical cables and submarine optical cables must withstand water pressure, tension, and waterproof properties; Metal optical cables can be erected together with high-voltage lines, and the insulation is better. Although there is no iron reinforcement core, it must also have a certain tensile capacity. Therefore, when purchasing an optical cable, the user should choose according to the use of the optical cable, and put forward requirements to the manufacturer to ensure that the optical cable is stable and reliable.

To sum up, the purchase of optical fiber is far more complicated than coaxial cable, and it cannot be simply measured by the price of several cores, but should be comprehensively based on the structure of the optical cable, the selection of raw materials, production technology and technical indicators. Considering that we should not just choose products that are too cheap. Because I have to consider many aspects, not only its service life, but also the standard of the entire engineering performance.

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