https://www.otranscomm.com/products/fiber-optic-adapter/
Fiber Optic Adapter
Fiber Coupler (Coupler), also known as adapter, fiber flange, is used to achieve optical signal shunt/junction, or used to extend the fiber link components, belongs to the field of optical passive components, in telecommunications networks, cable TV networks, user loop systems, regional networks will be applied to. As one of fiber optic adapter manufacturers, OTRANS strives to provide you with professional, reliable and comprehensive optical fiber couplers.