VOA Variable Attenuators

VOA (Variable Optical Attenuators) are devices used in fiber optic communication systems to control the power level of an optical signal, ensuring optimal network performance. They allow for precise adjustment of signal strength, which is crucial for preventing receiver overload and balancing power across channels in Wavelength Division Multiplexing (WDM) systems. VOAs can be manually or automatically controlled, with designs based on technologies like MEMS, LCD, or fiber bending. Commonly used in testing, signal equalization, and dynamic power control in DWDM systems, VOAs play a vital role in maintaining signal quality and enhancing the reliability of optical networks.