7/7/20195/215: Optical Fiber SECURE Products.To complement the CommScope fiber connector range, there is a wide range of LC connectors available includingkeyed types, that prevent improper connections in segregated networks. A range of colors is offered for easymatching of different types of connection. Secure connectors are available for both single-mode and multimode andthey interface with standard test equipment. The key component in the LC connector, and similar types, is the ferrulethat holds the end of the fiber. Ferrules may be made of ceramic, metal, or plastic. Ceramics are the most durable ofthe materials, but are more expensive than plastic. Plastic and metal ferrule materials may 'shave off' during matingand re-mating, creating debris that must be cleaned off.