The ISOD-15-C-2-3 from AFW Technologies is a Fiber Optic Isolator with Optical Power 300 mW, Isolation 32 to 46 dB, Insertion Loss <0.5 to 0.55 dB, Wavelength 1550 nm, Polarization Dependent Loss 0.05 dB. More details for ISOD-15-C-2-3 can be seen below.