Method for producing an optical fiber bundle

Abstract

Abstract METHOD FOR PRODUCING AN OPTICAL FIBER BUNDLE BY WINGING AT LEAST ONE OPTICAL FIBER ELEMENT ONTO A DRUM WHILE IT IS ROTATED IN ONE DIRECTION SO THAT A LAYER OF THE HELICALLY CLOSELY WOUND WINDINGS OF THE OPTICAL FIBER ELEMENT IS FORMED ON THE DRUM. THE OPTICAL FIBER ELEMENT IS FOLDED BACK UPON ITSELF AT THE END OF THE THUS FORMED LAYER OF THE OPITICAL FIBER ELEMENT WHILE THE ROTATION OF THE DRUM IS REVERSED SO THAT A SUCCEEDING LAYER OF THE OPTICAL FIBER ELEMENT IS FORMED ON THE PRECEDING LAYER. THE SENSE OF THE HELICAL ANGLE OF THE WINDINGS IN EACH OF THE LAYERS IN THUS KEPT THE SAME. THE UNIT OPITICAL FIBER BUNDLES EACH HAVING THE CROSSSECTION IN THE FORM OF A TRAPEZOID OR A REGULAR TRIANGLE, THE TRAPEZOID HAVING A BOTTOM SIDE THE LENGTH OF WHICH IS TWO TIMES AS LONG AS THAT OF THE REMAINING THREE SIDEDS OF THE SAME LENGTH AND OPPOSITE TWO SIDE SYMMETRICALLY INCLINED WITH RESPECT TO THE CENTER LINE OF THE CROSS-SECTION WITH THE INCLUDED ANGLE OF 60* FORMED THEREBETWEEN. THE UNIT OPTICAL FIBER BUNDLES ARE BONDED WITH EACH OTHER AT THE RESPECTIVE ENDS THEREOF SO AS TO FORM A COMPOSITE OPTICAL FIBER BUNDLE HAVING A LARGE CROSS-SECTIONAL AREA. EACH OF THE UNIT OPTICAL FIBER BUNDLES COMPRISES A PLURALITY OF OPTICAL FIBER ELEMENTS BONDED WITH EACH OTHER THROUGH THE LENGTH THEREOF SO THAT THE CROSS-SECTION OF THE SAME IS MADE IN THE FORM OF A TRIANGLE. THE UNIT OPTICAL FIBER BUNDLES ARE BONDED WITH EACH OTHER AT THE RESPECTIVE ENDS THEREOF SO THAT A COMPOSITE OPTICAL FIBER BUNDLE HAVING A LARGE CROSS-SECTIONAL AREA IS FORMED.

Inventors

• 👤 Masaharu Fukkami
• 👤 Heizaburo Takagi
• 👤 Toshio Nakatsubo

Bibliographic Details