  From the Feynman path integration theory of view, the Hanbury Brown--Twiss
effect would not be observed for one definite two-photon propagation path, as
well as the superbunching effect. Here, temporal and spatial superbunching
effects are measured from a pair of modulated distinguishable classical light.
These interesting phenomena are realized by passing two orthogonal polarized
laser beams through two rotating ground glass plates in sequence. To understand
the underlying physical process, the intensity fluctuation correlation theory
is developed to describe the superbunching effect in the temporal and spatial
domain, which agrees with experimental results well. Such experimental results
are conducive to the study of superbunching effect which plays an important
role in improving the performance in related applications, such as the contrast
of ghost imaging.
