Coherent Corp. announced the introduction of a bi-di circulator adaptor. This adaptor enables bi-directional transmission over a single fiber between two transceivers.

By enabling bi-directional transmission, the fiber count is reduced by a factor of two, which allows significant cost and space savings. In addition to the rapid growth with data centers driven by AI/ML applications, another high-volume application that requires significantly improved use of the deployed fiber through bi-directional transmission plant is the broadband access market. The Coherent bi-di circulator adaptor is a completely passive device, compatible with all transceiver LC connector ports, offering low insertion loss as well as high directivity in a compact footprint.

It is available in O-band, C-band, and L-band versions, and customized designs can be considered as well. Samples of the bi-di adaptor are available and have shipped to selected customers. Volume production will begin in the second half of 2024.