The DL-PCPMFC-TT-U-VV-W-X-Y-Z-B from DenseLight Semiconductors is a Fiber Optic Coupler with Wavelength 1310 to 1550 nm, Optical Power 0 to 0.3, (300 mW), Return Loss 50 dB, Operating Temperature -5 to 70 Degree C, Storage Temperature -45 to 85 Degree C. More details for DL-PCPMFC-TT-U-VV-W-X-Y-Z-B can be seen below.