The SN1x4 from Sercalo Microtechnology is a Fiber Optic Switch with Insertion Loss 0.7 - 1.2 dB, Operating Temperature 0 to 70 Degree C, Polarization Dependent Loss 0.05 - 0.10 dB, Storage Temperature -40 to 85 Degree C, Wavelength 1240 - 1640 nm. More details for SN1x4 can be seen below.