LC Fiber Cable Accessories Share Facebook Twitter LinkedIn Email LC Fiber Optic Adapters A fiber adapter, sometimes called a coupler, is a small device designed to terminate or connect a fiber optic cable or fiber optic connector between two fiber optic lines. View more LC Fiber Attenuators Attenuator is a light passive device, mainly used in optical fiber debugging optical power performance. we have simplex, duplex and quad LC adapters. View more