The FC/UPC Variable Fiber Optic Attenuator (VOA) is a versatile diagnostic and system-balancing tool designed for precise, real-time control of optical power levels. 1 Unlike fixed-value components, this manual attenuator allows technicians to incrementally adjust signal strength. FS fixed and variable fiber optic attenuators with leading attenuating fibers guarantee consistent and stable fiber attenuation (0~60dB) in WDM transmission. The input of the attenuator has a 2. 2 mm wide key female connector, making it compatible with. In-line Fiber optic Attenuator,Singlemode VOA,0-30dB range These VOAs are available unterminated or with FC/PC or FC/APC connectors. For product datasheet and latest catalog of Fiber Optic & FTTx Solution, ODN solution products, please contact us soon.