The acronym FC means “Ferrule Connector” but is often used as an acronym for “Fiber Channel” as well. A fiber optic connector is a mechanical device that allows two fibers to be joined precisely, enabling light to pass with minimal insertion loss and reflection. Of the more than a dozen types of fibre-optic connectors available, the four most commonly used today are. Understanding fiber connector types—SC/APC, SC/PC, LC/UPC, LC/APC, ST/PC, FC/PC, and FC/APC—is essential for selecting the right interface for your application. Each type varies by shape, polish (APC, PC, or UPC), and return loss performance, which affect PC, UPC, and APC Polish Styles: What's the. The FC connector is a fiber-optic connector with a threaded body, which was designed for use in high-vibration environments. It is commonly used with both single-mode optical fiber and polarization-maintaining optical fiber. FC connectors are used in datacom, telecommunications, measurement. SC, Abbreviation for Square Connector or Standard Connector. Designed to be simple to use and inexpensive to produce, SC uses a push-pull design similar to LC but utilizes a locking tab instead of a latch to secure the unit. What is a Fiber Optic Patch Cord? Fiber optic patch cords refer to fiber optic cables with connectors at both ends and a thick protective layer.