The ISO-30-L-1-0-1W from AFW Technologies is a Fiber Optic Isolator with Insertion Loss 1.2 dB, Isolation 25 - 30 dB, Operating Temperature 0 to 50 Degree C, Optical Power 1W, Polarization Dependent Loss 0.15 dB. More details for ISO-30-L-1-0-1W can be seen below.