A Fiber Optic Attenuator is a device used to reduce the strength of an optical signal in a fiber optic communication system. It works by intentionally introducing optical loss into the signal path. Type: Adjustable and Fixed Attenuators, Inline Attenuators and Pluggable Attenuators, Simplex or Duplex. Applications: Preventing Receiver Overload, Testing and Measurement, Equalizing Power Levels, Fiber-to-the-Home (FTTH).