| 摘要 |
PURPOSE:To realize low loss, and to improve a switching reproducibility by positioning relatively with a high accuracy aligning parts for aligning an output optical fiber of an optical distributor, and an input optical fiber aligning member of optical parts, and providing a movable light shielding plate having at least one minute hole, between the aligning members. CONSTITUTION:Output optical fibers 4-1-4-N of a distributor 3 for distributing uniformly an optical output of a light emitting element, for instance, an LED 1 to plural optical fibers 4-1-4-N are aligned regularly in a shape of an array by an aligning member 5, and plural input side optical fibers 8-1-8-N of an optical start coupler are aligned regularly in a shape of an array by the same aligning member 7 as the aligning member 5. Each end face of the optical fibers which have been aligned by the aligning members 5, 7 is brought to a polishing work, respectively, positioned with a high accuracy and fixed as one body by pressing the aligning members 5, 7 against a positioning member 12. Accordingly, a coupled state which is excellent in a switching reproducibility can be realized, a low loss characteristic can be obtained automatically completely, the measuring accuracy is improved, and the measuring time is shortened remarkably. |
