The difference between layer twisted optical cables and indoor single -mode central beam tube -type optical cables

Optical fiber cables are an essential part of modern telecommunications infrastructure. Two common types of optical fiber cables are layer twisted optical cables and indoor single-mode central beam tube-type optical cables. In this article, we will discuss the differences between these two types of cables.

Layer Twisted Optical Cables

Layer twisted optical cables, also known as multi-loose-tube cables, are a type of optical fiber cable that contains multiple loose tubes, each of which houses multiple fibers. The loose tubes are twisted around a central strength member to form a cable. The fibers within each loose tube are color-coded for identification.

Layer twisted optical cables are commonly used in outdoor applications, such as long-haul telecommunications networks, because they are rugged and resistant to environmental factors like moisture, heat, and cold. Layer twisted optical cables can be installed in ducts or directly buried in the ground.

Indoor Single-Mode Central Beam Tube-Type Optical Cables

Indoor single-mode central beam tube-type optical cables, also known as tight-buffered cables, are a type of optical fiber cable that contains a single central tube, which houses one or more fibers. The fibers are tightly buffered with a protective coating and color-coded for identification. The central tube is surrounded by strength members and a protective jacket.

Indoor single-mode central beam tube-type optical cables are commonly used in indoor applications, such as office buildings and data centers, because they are easy to install and terminate. They are typically installed in conduit or trays and can be routed easily to the desired location.

Differences Between Layer Twisted Optical Cables and Indoor Single-Mode Central Beam Tube-Type Optical Cables

The following are the main differences between layer twisted optical cables and indoor single-mode central beam tube-type optical cables:

3.1. Cable Construction

The most significant difference between layer twisted optical cables and indoor single-mode central beam tube-type optical cables is their construction. Layer twisted optical cables contain multiple loose tubes, while indoor single-mode central beam tube-type optical cables contain a single central tube. This difference in construction affects the cable's flexibility, size, and weight.

Layer twisted optical cables are generally larger and heavier than indoor single-mode central beam tube-type optical cables, making them more difficult to handle and install in confined spaces. In contrast, indoor single-mode central beam tube-type optical cables are smaller and more flexible, making them easier to install in tight spaces.

3.2. Fiber Count

Layer twisted optical cables typically have a higher fiber count than indoor single-mode central beam tube-type optical cables. Layer twisted optical cables can contain up to several hundred fibers, while indoor single-mode central beam tube-type optical cables typically have fewer fibers, ranging from 2 to 24.

3.3. Environmental Resistance

Layer twisted optical cables are designed to withstand harsh outdoor environments, including exposure to moisture, heat, and cold. They have a rugged construction that provides protection against damage from water, rodents, and other environmental factors.

In contrast, indoor single-mode central beam tube-type optical cables are designed for indoor use and are not as resistant to environmental factors. They are not designed to withstand exposure to moisture or extreme temperatures and can be damaged by rodents or other pests.

3.4. Installation

Layer twisted optical cables are typically installed in ducts or directly buried in the ground, while indoor single-mode central beam tube-type optical cables are installed in conduit or trays. Layer twisted optical cables are more difficult to install than indoor single-mode central beam tube-type optical cables because they are larger and heavier.

Conclusion

In conclusion, layer twisted optical cables and indoor single-mode central beam tube-type optical cables are two common types of optical fiber cables used in telecommunications infrastructure. The main differences between these two types of cables are their construction, fiber count, environmental resistance, and installation requirements.