| 摘要 |
PURPOSE:To improve the precision of an optical demultiplexer and a multiplexer, by forming a plane microlens in one body in a plane transparent base material so that the plane part of a planoconvex lens part is level with the surface of the transparent base material, and using a laminated body stacked with the microlens through a half-mirror between. CONSTITUTION:An optical fiber 3 for incidence and an optical fiber 4 for projection are connected to one end surface 2a of a laminated body 2 and an optical fiber 5 for projection is connected to the other surface 2b. Light entering a compound lens 9 from the optical fiber 3 strikes a half-mirror 11 through lens parts 7a and 7b to enter the compound microlens 10 through the half-mirror 11 and is guided to the optical fiber 5 for projection through the lens parts 7c and 7d; part of the light is reflected by the half-mirror 11 and transmitted again through the lens parts 7a and 7b to be converged to the end surface of the optical fiber 4 for projection. Thus, the light from the optical fiber 3 is demultiplexed to the optical fibers 4 and 5. |
