Fiber Optics - Attenuators are in stock at Tenco Electronics. An attenuator is an electronic device that reduces the power of a signal without appreciably distorting its waveform.An attenuator is effectively the opposite of an amplifier, though the two work by different methods. While an amplifier provides gain, an attenuator provides loss, or gain less than 1.Tenco offers inventory, pricing, & datasheets for Fiber Optics - Attenuators. To know more, please view our large section of Fiber Optics - Attenuators below.