The HPIDI- A-Grade from HJ Optronics, Inc. is a Fiber Optic Isolator with Insertion Loss 0.6 to 0.9 dB, Isolation 45 dB, Operating Temperature -5 to 70 Degree C, Optical Power 5 or 10 W, Polarization Dependent Loss 0.1 dB. More details for HPIDI- A-Grade can be seen below.