What is single fiber bi-directional wdm bidi sfp optical transceivers modules ?

Single fiber bi-directional: namely BiDi

Using WDM technology, send and receive two directions with different wavelength. A single fiber bi-directional transmission optical signals. General light module has two ports, TX port for launch, RX for receiving port;
BIDI module only one port, light through the optical module in the filter filter, at the same time to complete 1310 nm light signal launch and 1550 nm light signal receiving, or vice versa. So the module must be used in pairs, his biggest advantage is to save fiber resources.


BIDI module used light wavelength of 1310 nm / 1550 nm; 1310 nm / 1490 nm; 1510 nm / 1590 nm.