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OPGW Composite Ground Wire Optical Cable

Product Introduction:

Product Number: OPGW-24B1-90

■ Application Performance

- Suitable for various newly built power lines and the renovation of existing power lines

Chapter 1 Fiber Optic Fundamentals

1.1 Classification of Fiber Optics

The same optical fiber may have different names depending on the classification method and rules.

1.1.1 By Application

Based on application, optical fibers are mainly divided into two categories: communication optical fibers and non-communication optical fibers.

For example: optical fibers inserted into various communication cables are communication optical fibers; those inserted into various light guiding and image transmission cables such as those used in endoscopes are non-communication optical fibers. Some optical fibers can also be used to make optical devices for both communication and sensors, and for non-communication applications.

As global digital infrastructure continues evolving, fiber optic cables are playing an increasingly important role in various real-world communication scenarios. From smart cities and 5G base stations to industrial factories and data centers, fiber optic technology is becoming the core foundation for high-speed, stable, and efficient data transmission.

For existing power lines, ADSS optical cables serve as an "addition." Consequently, ADSS cables must be designed to adapt as closely as possible to the original line conditions. These conditions include (but are not limited to) meteorological loads, pole and tower strength and geometry, the phase arrangement and diameter of existing conductors, sag and tension parameters, span lengths, and safety clearances. Although the external appearance of an ADSS cable may resemble that of ordinary "all-plastic" or "non-metallic" optical cables, they are, in fact, two entirely different types of products.

Optical fiber cabling in power systems utilizes the light-guiding properties of optical fibers to convert a measured quantity into a corresponding change in optical characteristics (such as intensity, phase, polarization state, frequency, or wavelength). This process involves transmitting light from a source through an optical fiber into a modulator. Within the modulation zone, the parameter under measurement interacts with the incoming light, causing a change in the light's optical properties (e.g., intensity, wavelength, frequency, phase, polarization state, etc.). This modified light—referred to as the "modulated signal light"—is then transmitted through another fiber to a photodetector, where it undergoes demodulation to yield the value of the measured parameter.

Basic Selection Guide for Fiber Optic Cables

Although fiber optic cables are widely used in communication engineering, many people lack in-depth understanding of their selection. We frequently receive inquiries from customers online or by phone about how to choose the right fiber optic cable. Today, we'll explain how to select fiber optic cable products from the perspectives of structure, materials, and manufacturing processes.

ADSS optical cable has a different structure from overhead conductors. Its tensile strength is borne by aramid fiber rope. The elastic modulus of aramid fiber rope is more than half that of steel, and its coefficient of thermal expansion is a fraction of that of steel. This makes the sag of ADSS optical cable more sensitive to changes in external load. Under icing conditions, the elongation of ADSS optical cable can reach 0.6%, while that of conductors is only 0.1%. The sag is relatively insensitive to temperature changes, remaining essentially unchanged with temperature variations. Under strong wind conditions, its wind deflection angle is very large, reaching 80° at a wind speed of 30 m/s, while the wind deflection angle of conductors is only about half that of optical cable.

A milestone has recently been reached in the global fiber optic communication field. A new generation of "hollow-core fiber," jointly developed by internationally renowned research institutions and leading technology companies, has achieved a key breakthrough in a laboratory environment. Its data transmission performance far surpasses that of currently widely used solid-state silica fiber, laying the foundation for next-generation ultra-high-speed, low-latency global communication networks.