China Fiber Optic Adapter Manufacturer Carefiber offers Fiber Optic Adapters, in PC, UPC, APC, SM and MM Types, Low Insertion ... . Applications: CATV System. Optical Fiber Communication. Testing Equipment. FTTX. Fiber Optic Network Convergence. Optical fiber access network. Fiber Data Transmission. Optical Fiber Video Transmission. Fiber Multimedia System.