REFLECTION PREVENTING FILM FORMING DEVICE FOR OPTICAL FIBER END FACE

PURPOSE:To form a reflection preventing film on the end face of an optical fiber in a vacuum state of high quality by connecting an auxiliary vacuum chamber to a vacuum chamber used for forming the reflection preventing film on each end face of bundled optical fibers and inserting bundled optical fi...

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Bibliographische Detailangaben
1. Verfasser:	TSUBOI SHUNGO
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL GLASS INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL JOINING GLASS TO GLASS OR OTHER MATERIALS METALLURGY MINERAL OR SLAG WOOL OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHYSICS SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION
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Beschreibung
Zusammenfassung:	PURPOSE:To form a reflection preventing film on the end face of an optical fiber in a vacuum state of high quality by connecting an auxiliary vacuum chamber to a vacuum chamber used for forming the reflection preventing film on each end face of bundled optical fibers and inserting bundled optical fibers into the vacuum chamber through the auxiliary vacuum chamber and forming the reflection preventing film on each end face of bundled optical fibers. CONSTITUTION:Bundled optical fibers 9 are set, and a cover of an auxiliary vacuum chamber 15 is closed, and an exhauster 2 and a subexhauster 14 are operated to evacuate a vacuum chamber 1 and the auxiliary vacuum chamber 15, and end faces of bundled optical fibers 9 are heated by a heater 7. When the degree of vacuum in the vacuum chamber 1 becomes