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Fiber Optical Coupler
Fiber coupler is a detachable (active) connection device between the fiber and the fiber, it is the two end faces of the fiber precision docking, so that the optical energy output of the transmitting fiber can be coupled to the receiving fiber to the maximum extent, and make it involved in the optical link so as to minimize the impact on the system. For a waveguide fiber coupler, it is generally an element with a Y-branch, by which the optical signal input by a fiber can be bisected.