I. Introduction

With the rapid development of science and technology, optical fiber communication has become the mainstream mode of modern communication. Its high efficiency, large capacity and anti-interference characteristics make it widely used in telecommunications, networks, data centers and other fields. In fiber optic communication, the type of fiber optic interface plays a crucial role, which determines the transmission rate of information, the transmission distance, and the compatibility of the system. This topic describes several common types of fiber optic interfaces in detail.

2. Common types of optical fiber interfaces

    

1. LC interface (small square head)  

The LC interface, also known as Lucent Connector, is an optical fiber interface used in Ethernet switches. The LC interface is developed using an easy-to-use modular jack (RJ) latching mechanism. This interface has the characteristics of high density, high speed, high reliability, and miniaturization, and is very widely used.

2. SC interface (large square head)

 

The SC interface, full name Square Connector, is a snap-on interface developed by NTT Corporation of Japan. This kind of interface has the advantages of convenient plugging and unplugging, good mating stability and high durability, so it has been widely used in the field of data transmission.

3. ST interface    

 

The ST connector, or Straight Tip, is a round quick connector originally developed by Corning. Due to its high reliability and stable connection, it is widely used in optical fiber connection of various network equipment.

4. FC interface (large round head)

        

The FC interface, also known as Fiber Channel, is a kind of abrasive interface, which generally uses a special fiber ferrule when connecting. The external reinforcement method is a metal sleeve, and the fastening method is a screw buckle. Generally used on the ODF side (most commonly used on patch panels), this interface has the advantages of stable connection and high transmission rate, and is mainly used between high-performance network equipment.

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