The MMHPI-850 from OF-Link Communications is a Fiber Optic Isolator with Insertion Loss 0.8 to 1 dB, Isolation 25 dB, Operating Temperature -5 to 50 Degree C, Optical Power 0.5, 1, 3, 5, 10, 20, 30 W, Polarization Dependent Loss 0.15 dB. More details for MMHPI-850 can be seen below.