Relationship between structure regularity and the propagation loss of
Langmuir-Blodgett(LB) film waveguides was investigated. The LB film wi
th a homogeneous surface morphology could be constructed from the mech
anically stable monolayer prepared by the multi-step creep method. The
propagation loss of the LB film waveguide was decreased by the surfac
e flatness of the LB film.