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    • 4. 发明授权
    • Optical coupler having a tapered fused region
    • 具有锥形熔融区域的光耦合器
    • US5410626A
    • 1995-04-25
    • US81479
    • 1993-06-23
    • Michitaka OkutaTetsuya SugaAkio TsugawaKiyohiko Kuramoto
    • Michitaka OkutaTetsuya SugaAkio TsugawaKiyohiko Kuramoto
    • G02B6/28G02B6/34G02B6/00G02B6/26
    • G02B6/29332G02B6/2835G02B6/2856
    • An optical coupler having a tapered fused region produced by locally heating the periphery of a plurality of aligned optical fibers, each having a core and a cladding, so that the optical fibers fuse together at the heated part, and then drawing the resulting fused region by pulling. The length of the fused region is not longer than 10 mm. The tapered fused region may be provided in such a manner that a plurality of optical fibers are disposed to intersect each other at a predetermined angle, and the intersecting portions are locally heated so as to fuse together and then subjected to pulling. The tapered fused region may be provided at each of two or more positions. Also disclosed is an optical coupler wherein at least one of a plurality of optical fibers each having a core and a cladding is previously heat-treated at a high temperature to enlarge the core in a portion thereof, and the enlarged-core portion of this optical fiber is fused to the other optical fibers and then subjected to pulling, thereby forming a tapered fused region.
    • 一种具有锥形熔融区域的光耦合器,其通过局部加热多个对准的光纤的周边而产生,每个具有芯和包层,使得光纤在加热部分处熔合在一起,然后通过 拉扯 熔融区域的长度不大于10mm。 锥形熔融区域可以以使得多个光纤以预定角度彼此相交的方式设置,并且交叉部分被局部加热以熔合在一起然后进行拉伸。 可以在两个或更多个位置中的每一个处设置锥形熔合区域。 还公开了一种光耦合器,其中每个具有芯和包层的多个光纤中的至少一个预先在高温下进行热处理以在其一部分中扩大芯部,并且该光学器件的放大芯部分 纤维与其他光纤熔合,然后进行拉伸,从而形成锥形的熔融区域。