PHOTONIK'S C band fiberoptic circulator is a compact, high performance lightwave component that works to transmit the incoming signal from port 1 to port 2, and another incoming signal from port 2 to port 3 simultaneously. The component provides high isolation, low insertion loss, low PDL, low PMD and excellent environmental stability. It is widely used in combination with fiber gratings and other reflective components in DWDM systems, high speed systems and bi-direction communication systems. Besides, our new version with full Corning MetroCor fiber pigtailed design may work for dispersion-cared high speed systems, most applicable to short pulse fiber laser use. 3 - 10 ports circulators are available and reciprocally-designed circulators upon request.