  Focusing on La_{2-x}Sr_{x}CuO_{4}, we study the stripe structure by the
self-consistent mean-field theory of the Hubbard model. By introducing the
realistic Fermi surface topology, the SDW-gapped insulator is changed to
metallic. The solitonic features of the stripe structure and the contribution
of the mid-gap states are presented. We consider the band dispersion, the local
density of states, the spectral weight, and the optical conductivity,
associated with the solitonic structure. These results may provide important
information for the experimental research of the stripe structure, such as the
angle-resolved photoemission experiments. The ``Fermi surface'' shape is
changed depending on the ratio of the incommensurability delta and the hole
density n_h. In real space, only the stripe region is metallic when delta/n_h
is large.
