| 摘要 |
PROBLEM TO BE SOLVED: To make it possible to obtain an optical isolator which does not require the impression of a magnetic field as an optical rotator and is adequate for optical integration of optical integrated circuits, photoelectric integrated circuits, etc., by consisting the optical isolator of a liquid crystal polymer which is formed to a three- dimensional waveguide shape and has the mesogene groups oriented perpendicularly in the progressing direction of incident light. SOLUTION: This three-dimensional waveguide optical rotator 16 consists of the liquid crystal polymer layer 12' which is formed to the three-dimensional waveguide shape and has the mesogene groups oriented perpendicularly in the progressing direction of the incident light. The liquid crystal polymer layer 12', therefore, has a difference in the refractive index between the orientation direction of the mesogene groups and the arrangement direction and the direction perpendicular to the progressing direction of the incident light, i.e., the thickness direction of the liquid crystal polymer layer 12'. The resulted three-dimensional waveguide type optical rotator 16 constitutes the optical rotator which does not require permanent magnets and magnetic field generating circuits, etc., as the arrangement direction of the mesogene groups in the liquid crystal polymer layer 12' is held as it is without requiring the impressed magnetic fields, etc. |
