Packaging structure for double light filters

The invention discloses a packaging structure for double light filters. The packaging structure comprises an outer sleeve, a first optical fiber collimator, a second optical fiber collimator, a connection pipe, a first WDM film, a second WDM film, a first transition pipe and a second transition pipe, wherein the first optical fiber collimator is fixed at one end inside the outer sleeve through theconnection pipe; the second optical fiber collimator is fixed at the other end inside the outer sleeve; one end, toward the second optical fiber collimator, of the connection pipe is connected with the first transition pipe through an adhesive layer and one end of the first transition pipe is matched with the connection pipe through a spherical surface; the first WDM film is fixed at the other end of the first transition pipe; the second transition pipe sleeves the outside of the first transition pipe and is connected with one end, toward the second optical fiber collimator, of the connectionpipe through the adhesive