The Fiber Optic Attenuator Inline from Anfkom Telecom is a Fiber Optic Attenuator with Attenuation 1 to 30 dB, Return Loss >50 to 65 dB, Polarization Dependent Loss <0.2 dB, Operating Wavelength 1200 to 1600 nm, Optical Input Power 200 mW. More details for Fiber Optic Attenuator Inline can be seen below.