The PIIS-S-8-P from COMCORE Technologies is a Fiber Optic Isolator with Insertion Loss 1.5 dB to 2 dB, Isolation 35 dB, Operating Temperature -5 to 70 Degree C, Optical Power 300 mW, Polarization Dependent Loss 0.1 dB. More details for PIIS-S-8-P can be seen below.