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Fiber circular act as signal routers, transmitting light from an input fiber to an output fiber, but directing light that returns along that output fiber to a third port. Fiber circulators perform a similar function as an optical isolator, protecting the input fiber from return power, but also allowing the rejected light to be employed.
Application of fiber circulator
Fiber circulator is a necessary component in the fiber optic network to direct an optical light signal from one port to another port sequentially in only one direction. Typical working wavelength for fiber circulator is at 1310nm or 1550nm. Fiber circulators are used in dispersion compensation devices and in add/drop passive WDM, MUXs/DEMUXs
Structure of Fiber circulator
Typical fiber circulators include 3-port type, 4-port type and 6-port type. Passing all the intermediate ports in sequence. Optical light transmitted from any of the port in such circulators can be redirected to any other port.
We provide fiber circulator with extra high isolation, Low insertion and return loss, Low polarization dependent loss and polarization mode dispersion. ...Specification
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