Fiber Optic Connector basics

Here is a little overview of Fiber Optic connectors.

Fiber Optic connectors terminates the end of an optical fiber and enables quicker connection and disconnection than splicing. The connectors mechanically couple and align the cores of fibers so light can pass.
Fiber Optic connectors are used to join optical fibers where a connect/disconnect capability is required.

The basic connector unit is a connector assembly. A connector assembly consists of an adapter and two connector plugs.

Due to the polishing and tuning procedures that may be incorporated into optical
connector manufacturing, connectors are generally assembled onto fiber cables in a supplier’s manufacturing facility.
However, the assembly and polishing operations involved can be performed in the

A variety of Fiber Optic connectors are available, but SC and LC connectors are the most common types of connectors on the market. The main differences among types of connectors are dimensions and methods of mechanical coupling.

Here is an Example of a LC Connector and SC Connector.
LC Fiber Optic Connector Duplex


SC Fiber Optic Connector Simplex


Generally, organizations will standardize on one kind of connector,
depending on what equipment they commonly use.

Different connectors are required for multimode, and for single-mode fiber cables.

When picking out a Fiber Optic Connector please think about these options:
Connector Style
Connector Type
Fiber Core Diameter
Fiber Cladding Diameter
Cable Diameter
Mounting Type
Fastening Type
Housing Color
Boot Color
Ingress Protection

Below is a Chart of the Different Types of Fiber Optic connectors that Digi-Key does carry and some information about them.