ASU (All-Dielectric Self-Supporting) fiber optic cable is a type of fiber optic cable specifically designed for aerial installations without the need for additional support structures, As their name suggests, they are more suitable for transmission over a span of 80m, 100m, 120m. Here are its characteristics, construction, and applications:
Characteristics of ASU Cable:
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All-Dielectric Construction:
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Contains no metallic components, making it non-conductive.
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Suitable for installations near power lines and in areas with high electrical interference.
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Self-Supporting:
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Designed to support its weight and withstand environmental stress without additional support from messenger wires or other structures.
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Reduces installation time and cost by eliminating the need for separate supporting elements.
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Lightweight and Flexible:
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Easier to handle and install compared to cables with metallic support structures.
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Can be deployed in a variety of aerial scenarios, including along utility poles and across spans.
Construction of ASU Cable:
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Optical Fiber Core:
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Typically contains multiple optical fibers that carry the data signals.
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Loose Tube or Central Tube Design:
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Loose tube design where fibers are housed in buffer tubes filled with water-blocking gel or powder.
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Central tube design with all fibers contained in a single central tube for added protection.
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Strength Members:
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Incorporates strength members made of aramid yarns or other dielectric materials to provide tensile strength and support.
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Outer Jacket:
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The outer jacket is made of durable materials like polyethylene (PE) to protect against environmental factors such as UV radiation, moisture, and temperature variations.
Applications of ASU Cable:
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Aerial Installations:
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Used extensively in aerial deployments along utility poles, telephone poles, and across spans.
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Suitable for both short and long-span installations, providing reliable data transmission over distances.
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Power Line Installations:
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Ideal for installation along power lines due to its non-conductive nature, preventing electrical hazards.
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Can be safely installed in high-voltage environments without risk of interference or electrical faults.
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Telecommunications:
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Commonly used in telecommunications networks to provide high-speed data transmission between communication hubs, central offices, and distribution points.
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Fiber to the Home (FTTH):
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Deployed in FTTH applications to bring high-speed internet and telecommunications services directly to residential and commercial buildings.
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Provides a robust and reliable connection for last-mile connectivity in urban and suburban areas.
ASU fiber optic cables are a versatile and reliable solution for various aerial fiber optic installations, offering robust performance and easy deployment in diverse environments.