Standard Fiber Adapter ( Fiber Flange/ Mating Sleeves ) is a fiber passive device designed for connection between two connectors. There is a variety of adapters of high accuracy, low insertion loss, superior durability, excellent interconnection and adaptability to temperature. This for type adapters also have good in and mechanical and widely used in distribution frame (), communications and measurement equipments. machining size, high reliability, stability Low insertion loss, high return loss, good interchangeability Insertion loss: ≤0.2dB Return Loss: ≥50dB