The FOBC-2-15-50-L-1-S-1 from AFW Technologies is a Fiber Optic Coupler with Wavelength 1550 nm, Directivity 65 dB, Insertion Loss 3.4 dB, Polarization Dependent Loss 0.05 dB, Operating Temperature -5 to 70 Degree C. More details for FOBC-2-15-50-L-1-S-1 can be seen below.