The FITB96483NIM from Fiberinthebox is a Fiber Optic Isolator with Optical Power 500 mW, Isolation 20 to 46 dB, Insertion Loss 0.4 to 0.8 dB, Wavelength 1310 nm, 1550 nm, 1590 nm, Polarization Dependent Loss 0.05 to 0.1 dB. More details for FITB96483NIM can be seen below.