Bi-directional SFPs

Did you know that Bi-directional SFPs can help save money in refurbishment projects?

When improving and extending networks there isn’t always enough fiber optic cables installed for the new functions needed. This means that new cables must be added at a very high cost for the customer. It might not even be allowed to add cables to a fixed installation due to fire and security regulations.

The answer is to use Bi-directional transceivers (BiDi SFPs); these transceivers can transmit and receive light signals over the same fiber core. Normally there is one core that transmits and one that receives light, thus the two fiber cores in a fiber optic cable. The BiDi SFP transmits at one wavelength and receives at another therefore a blue and a green marking indicates which one to use at each end of the cable. Westermo BiDi SFPs come in a wide variety of versions; Multi Mode, Single Mode, 100Mbit/s up to 120 km, 1Gbit/s up to 80 km, with DDM diagnostics and without.