Mining optical cables are mainly composed of optical fibers, plastic sheathes, and plastic shells; internally, they contain no metals like gold, silver, copper, or aluminum and are generally not recyclable. An optical cable consists of a core made up of a certain number of fibers arranged in a specific manner, encased in a protective sheath, and sometimes an additional outer jacket, all for the purpose of transmitting optical signals.
I. Selecting the Transmission Distance for Fiber Optics
Fiber optics are categorized into two types based on the method of light transmission: single-mode and multimode fibers. Multimode fibers are widely used in short-range transmission environments, such as within buildings or in close proximity settings. Single-mode fibers are primarily employed for long-distance transmission and high-speed networks, including long-haul backbone networks and metropolitan area network construction. The transmission speeds of single-mode and multimode fibers are quite similar; however, the transmission distance significantly impacts the performance. Generally, optical cables over two kilometers in length would opt for single-mode fibers.
Material Selection for Optical Cables
The selection of fiber optic cable materials and the manufacturing process directly impact the quality of the cable. Products with stable processes and high quality are generally not included in the production process of additional fiber optic losses, and the losses of cables produced by high-quality manufacturers are ≤0.01dB/km. The main materials of the cable include: core, fiber optic grease, sheath material, and PBT, each with different quality requirements. The core requires high power filling capacity, high signal-to-noise ratio, low bit error rate, large amplifier spacing, and high information transmission capability. The function of the fiber optic grease is to prevent the moisture in the air from eroding the fiber, and also serves as a cushion to buffer the effects of vibration and impact on the fiber.
Section III: Cable Selection Based on Core Count Requirements
The structure of optical cables, which can be divided into different models based on the number of fiber cores, includes central sheath, stranded, backbone, and ribbon types. Users can specify requirements according to their specific applications and line conditions.The SEC fiber optic cables come in 2 to 48 cores, allowing users to select the appropriate cable based on their actual needs.
Select optical cables based on usage conditions.
Fiber optic cables are becoming increasingly popular with a wider range of applications. Categorically divided by actual use, they include overhead fiber optic cables, direct-buried fiber optic cables, pipeline fiber optic cables, submarine fiber optic cables, and non-metallic fiber optic cables. Overhead fiber optic cables require high strength and a low temperature coefficient of expansion; direct-buried fiber optic cables need to have good burial, pressure resistance, moisture resistance, and chemical corrosion resistance; pipeline and submarine fiber optic cables are required to be pressure-resistant, tensile-resistant, and have good waterproofing properties; non-metallic fiber optic cables can be installed alongside high-voltage lines, offering good insulation. Although they lack a metallic reinforcing core, they still possess a certain tensile strength.
