Fiber optic connectors are used to align and join two or more fibers together to provide a means for attaching to, or decoupling from, a transmitter, receiver, or any other fiber optic equipment. A connector is a mechanical device used to align and join two or more fibers together to provide a means for attaching to and decoupling from a transmitter, receiver, or any other fiber optic equipment or devices.  An adapter is a mechanical device used to align and join two or more fibers with different connection types.