The Manual Variable Fiber Optical Attenuator allow the user to manually vary the attenuation of the signal in the fiber as it is transmitted through the device. These VOAs can be used to to precisely balance the signal strengths in fiber circuits or to balance an optical signal when evaluating the dynamic range of the measurement system. The Manual Variable Optical Attenuator have single mode or PM fiber pigtails with a 900um jacket. The VOAs are offered unterminated or terminated with FC/PC or FC/APC connectors. For other connector styles or custom requests, please contact Technical Support.