- Fiber optic circulator is a special fiber-optic component that can be used to separate optical signals that travel in opposite directions in an optical fiber, analogous to the operation of an electronic circulator. Fiber Optic 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 optical circulator is at 1310nm or 1550nm. Ingellen supply fiber optical circulators include 3-port type and 4-port type. These circulators are all used in dispersion compensation devices and in add/drop passive WDM, MUXs/DEMUXs.
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