Abstract: An optical communication device includes a dispersion unit and a switching unit that are disposed in a cavity of a closed housing. The optical communication device further includes a monitoring unit and a drive unit. The monitoring unit may monitor in real time offsets of light spots formed on the switching unit. The drive unit can drive the switching unit based on a variation obtained by the monitoring unit, so that the switching unit compensates for the offsets of the light spots. In addition, the optical communication device may further include a dustproof and waterproof unit and a humidity control unit.