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negele electrical components are devices for detachable (active) connection between optical fibers. They precisely align the two end faces of the optical fibers to maximize the coupling of light energy output from the transmitting fiber into the receiving fiber, and minimize the impact on the system caused by their insertion into the optical link. This is the basic requirement for fiber optic connectors. To a certain extent, fiber optic connectors affect the reliability and various performance metrics of optical transmission systems. negele electrical components principle Fuel cells are energy conversion devices that operate based on electrochemical principles, namely