| 摘要 |
PURPOSE: To provide a converter, which utilizes the polling characteristic unique to nonlinear polymer and the optical anisotropy to be induced at polling and the electrical and optical effect, by forming an optical axis, which has the specified angle against the electric field direction of the TE mode and the TM mode, inside a core layer as a nonlinear polymer waveguide layer. CONSTITUTION: An optical axis having angles of 45 degrees to the respective electric field directions of the TE mode and the TM mode is formed inside a core as a nonlinear polymer waveguide layer. Periphery of the core layer 1 as a waveguide path is a clad layer 2 made of an electrically anisotropic material or non-linear material, which has an electrical and optical coefficient and optical anisotropy like the core layer 1 but of which refractive index is lower than that of the core. Direction of the polling electric field is arranged so that the meanθ=45 deg. in relation to the x-ray on a figure near the waveguide path, then, the non-linear molecules doped in the non-linear polymer core layer 1 are arranged in the electric field direction, and the macroscopic optical axes of the nonlinear polymer are formed at 45 deg. mean angle against the x-axis. |
