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Fiber Optic Patch Cords: A Detailed Explanation of Various Interface Types and Signal Stability
In modern communications networks, fiber optic patch cords, as a crucial component of optical fiber transmission systems, play a crucial role in connecting fiber-optic devices and enabling signal transmission. Whether in data centers, communication base stations, or local area networks, high-quality fiber optic patch cords directly impact network stability and transmission efficiency. This article will provide an in-depth introduction to the characteristics of fiber optic patch cords, common interface types, and how to ensure stable signal transmission through low insertion loss.
What is a fiber optic patch cord?
A fiber optic patch cord is a connecting cable used in fiber optic communication systems. It consists of an optical fiber and an optical interface. Its primary function is to transmit optical signals from one optical fiber device to another while maintaining signal quality. Fiber optic patch cords come in two types: single-mode (SM) and multimode (MM), suitable for long-distance and short-distance transmission, respectively. High-quality fiber optic patch cords require not only low fiber loss but also excellent pluggable and unpluggable interface performance to ensure long-term stable network operation.
Common Fiber Optic Patch Cable Connector Types
In the practical application of fiber optic patch cables, choosing the right connector type is crucial. The following are some common connector types on the market:
LC Connector
The LC connector (Lucent Connector) is a compact fiber optic connector, half the size of a standard SC connector, making it ideal for high-density cabling environments. Its push-pull design allows for easy insertion and removal, and it features low insertion loss (typically ≤0.3dB). It is widely used in data centers and high-speed networks.
SC Connector
The SC connector (Subscriber Connector) is a square, snap-on connector with a simple structure and easy installation. It offers low insertion loss (typically ≤0.3dB) and excellent resistance to repeated insertion and removal, making it ideal for applications in fiber optic patch panels and fiber optic terminal boxes.
ST Connector
The ST connector (Straight Tip Connector) features a round pin design that requires a twist lock for insertion and removal. The ST connector is highly durable and is commonly used in campus, enterprise, and local area network fiber optic cabling systems. Its low insertion loss ensures stable signal transmission.
FC Connector
The FC connector (Ferrule Connector) uses a threaded fastening method, providing extremely stable connections and is particularly suitable for locations sensitive to vibration and mechanical shock. The FC connector offers low insertion loss and high return loss, making it suitable for high-precision fiber optic instruments and long-distance fiber transmission.
Low Insertion Loss and Signal Stability
The key to fiber optic patch cable performance lies in insertion loss and return loss. Low insertion loss means minimal signal attenuation as it passes through the connector, ensuring data transmission integrity. High return loss prevents signal reflections back to the source, which could affect device performance. When selecting a fiber optic patch cable, in addition to the connector type, consider the fiber type (single-mode/multimode), length accuracy, and manufacturing process to ensure stable and efficient signal transmission.
コンタクトパーソン: Ms. Jonay Xie
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