When connecting to the London Internet exchange most members will connect using a fibre pair or cross-connect. One fibre is dedicated to receiving data from network equipment and the other fibre will be dedicated to transmitting data to the network. Bi-directional optical transceivers (or BiDi transceivers for short) allow the transmitting and receiving of data on a single fibre. There is no additional charge for using BiDi transceivers, other than a £200 installation charge.
BiDi transceivers split light into different wavelengths using wave division multiplexors (WDM). They must work as a matched pair having the correct receive and transmit wavelength. A usual naming convention has one device referred to as upstream and one as downstream. For delivery of the LINX BiDi product LINX will always be the upstream device. The member will have to purchase the corresponding downstream device.
If you are interested in ordering a BiDi tranceiver please complete the usual order form and in the "additional information" box please state that you require BiDi optics.
For additional information please view our Bi-Directional Optical Transceivers data sheet.