The HAIS-1053-P from AC Photonics is a Fiber Optic Isolator with Insertion Loss 1.3 dB to 1.5 dB, Isolation 25 dB, Operating Temperature -20 to 70 Degree C, Optical Power 10 W, Polarization Dependent Loss 0.15 dB. More details for HAIS-1053-P can be seen below.