| 摘要 |
PURPOSE:To form a light demultiplexing transmission line by an optical fiber used in an optical data bus as the one with low loss, low cost, and high reliability. CONSTITUTION:A lens 13 provided with a large degree of aperture and a lens 14 with a small degree of aperture are provided between a light emitting element 7 and a bundle part 15 which bundles the optical fibers closely. A light receiving element 12 is coupled with each emitting terminal of the optical fibers 11 arranged separately via a lens 16. Light emitted from the light emitting element 7 is fully converged on the lens 13, and furthermore, it is changed to parallel beams by the lens 14, and they are entered into the optical fibers 11 of the bundle part 15 with sufficient light power and without generating dispersion. Entered light is emitted from each emitting terminal passing each optical fiber 11, and is received by the light receiving element 12. |
