Difference between Fast Connector and Fiber Optical Adaptor

When setting up a fiber optic network, it's essential to understand the components that ensure stable and efficient connections. Two commonly used devices are fast connectors and fiber optical adaptors. Although both are integral to fiber optic systems, they serve different purposes and have distinct features.

What Is a Fast Connector?

A fast connector, also known as a quick connector or field-assembled connector, is a reusable passive optical component. Its primary function is to establish a direct connection between an optical fiber and fiber optic equipment. Due to its ease of use and reliable performance, it’s one of the most widely used components in optical communication networks.

Fast connectors are available in two types based on the installation method:

• Mechanical connection type

• Hot melt type

The typical fast connector structure includes three main parts:

• Main body

• Outer shell

• Tail cap

Fast connectors simplify the installation process and eliminate the need for fusion splicing, making them ideal for on-site applications.

What Is a Fiber Optical Adaptor?

A fiber optical adaptor is also a passive optical device, but it is designed to connect two fiber optic connectors—either of the same or different types—within a fiber cabling system. It serves as a bridge between patch cords or between patch cords and equipment, enabling signal transmission across the network.

Fiber optical adaptors are frequently used in:

• TV broadcasting systems

• Local Area Networks (LANs)

• FTTH (Fiber to the Home) installations

• General fiber optic communication systems

There are two main types of fiber adaptors:

• With flange – secured with screws

• Without flange – directly snapped onto panels or trays

Key Differences Between Fast Connector and Fiber Optical Adaptor

1. Connector Type

• Fast connectors typically support a single interface type such as SC or LC, used for connecting a fiber to a device.

• Fiber adaptors, on the other hand, support a wide variety of interface conversions, including SC, LC, FC, ST, MTRJ, MPO, and E2000, making them more versatile in mixed setups.

2. Function

• Fast connectors are used to connect a fiber optic cable directly to a device, enabling signal transmission.

• Fiber adaptors serve as a bridge to interconnect different types of fiber connectors, allowing communication between devices with varying interfaces.

3. Design and Structure

• Fast connectors are generally made of plastic and have a long rectangular shape, designed for a specific connector type.

• Fiber adaptors may be plastic or metal, and come in rectangular or cylindrical shapes. They feature connection ports on both ends for different connector types.

4. Application Areas

• Fast connectors are ideal for direct fiber-to-device connections in LANs, WANs, and data centers.

• Fiber adaptors are more common in structured cabling systems, such as patch panels, distribution frames, and network switches.

5. Pluggability

• Fast connectors are designed to be plugged and unplugged as needed, which simplifies maintenance and troubleshooting.

• Fiber adaptors are typically installed once and remain fixed in place; they do not support regular plugging/unplugging.

How to Install a Fast Connector

Installing a fast connector is straightforward. Here's a simplified step-by-step guide:

1. Remove the tail cover and slide it onto the fiber cable.

2. Strip about 45–50mm of the cable jacket using fiber optic strippers.

3. Expose the bare fiber by removing the coating with Miller pliers.

4. Clean the exposed fiber using a lint-free cloth.

5. Fix the fiber into the cable holder securely.

6. Cleave the fiber with a fiber cleaver to ensure a flat end face.

7. Insert the cleaved fiber into the connector until it reaches the stop point.

8. Attach the boot cover by turning it into place.

9. Align the connector housing with the body and snap them together.