Inner rubber outer fiber sleeve (also known as inner rubber outer fiber optical cable) is a commonly used protective sleeve structure in the field of optical fiber communication. This structure is widely used for its excellent protection performance and low loss characteristics. This article will provide a detailed introduction to the process of inner rubber outer fiber casing, including process steps, material selection, and application advantages.
Process steps:
Step 1: Prepare the fiber core wire. Firstly, select appropriate fiber core and cladding materials. In general, fiber optic core wires are made of pure silica, while the cladding material can be organic or inorganic substances. These materials require pre-treatment and cleaning to ensure a smooth and pollution-free surface.
Step 2: Apply a layer of glue on the surface of the fiber core wire. The main function of this layer of glue is to fill the gap between the core wire and the outer fiber, providing additional protection and support. Glue can be selected from environmentally friendly, high-temperature, and corrosion-resistant materials to ensure good performance and long-term reliability.
Step 3: Wrap the outer fiber around the fiber core covered with glue. External fibers have high strength and tensile properties, which can provide additional protection and support. Usually, several or dozens of external fibers are used, and the number of layers and tightness can be adjusted as needed.
Step 4: Cure: Place the wrapped fiber sleeve in the curing chamber for baking or photocuring treatment. This step is to solidify the adhesive and firmly bond with the fibers, forming a complete inner and outer fiber sleeve structure. The curing temperature and time should be adjusted according to the requirements of the adhesive and fiber materials to ensure stable curing effect and performance.
Material selection:
Fiber core wire: The selection of fiber core wire usually depends on the application requirements and performance requirements. The most common method is to use single mode or multimode optical fibers as fiber cores, which are characterized by low loss and high transmission efficiency.
Outer fiber: Outer fiber generally adopts a mesh structure or textile fabric to provide sufficient protection and mechanical strength. The selection of external fiber should consider its characteristics such as wear resistance, tension resistance, and environmental erosion resistance.
Glue: The selection of inner glue should be determined based on its mechanical properties, temperature resistance, and chemical resistance characteristics. Common inner glue materials include acrylic emulsion glue, silicone rubber and epoxy resin.
Application advantages:
Protective performance: The inner rubber outer fiber sleeve can provide good mechanical protection to prevent damage to the fiber core caused by external compression, stretching, or bending. The inner adhesive layer can fill the gap between the fibers and the outer fibers, effectively preventing dust, moisture, and other external factors from affecting the fiber.
Low loss characteristic: The inner rubber outer fiber sleeve has lower transmission loss and attenuation. The inner adhesive layer can provide additional optical interfaces, reduce the scattering and reflection phenomena of optical signals, thereby improving transmission efficiency and data quality.
Reliability: The design of the inner rubber outer fiber sleeve ensures the stability and long-term reliability of the optical fiber. The solidification of adhesive and the winding of external fibers increase the strength and mechanical stability of the entire structure, reducing the impact of vibration and temperature changes on the optical fiber.
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