公开(公告)号：US20070086697A1

公开(公告)日：2007-04-19

申请号：US10555157

申请日：2004-05-21

申请人： Ryo Yamamoto ,  Ilirokazu Tanaka ,  Masayasu Onishi ,  Yoichi Nakanishi ,  Ryuji Kawamoto ,  Yuichi Suzuki

发明人： Ryo Yamamoto ,  Ilirokazu Tanaka ,  Masayasu Onishi ,  Yoichi Nakanishi ,  Ryuji Kawamoto ,  Yuichi Suzuki

IPC分类号： G02B6/26

CPC分类号： G02B6/3582 ,  G02B6/32 ,  G02B6/352 ,  G02B6/3556 ,  G02B6/3572 ,  G02B6/358

摘要： To decrease an insertion loss by shortening an optical path length between an input side optical fiber and an output side optical fiber, and to decrease a stroke of a drive component. Input side optical fibers and a preliminary optical fiber arranged in parallel to one another and output side optical fibers arranged in parallel to one another are arranged in two stages, and a fixed prism 14 is arranged to be opposite to end surfaces of these. A preliminary optical fiber prism 15b is provided on one oblique surface of the fixed prism 14 to be opposite to a preliminary optical fiber 20, and a driven prism 15a can be made to come in contact with and separated from the one oblique surface of the fixed prism 14, and the driven prism 15a can be moved along the input side optical fibers. At a position where the driven prism 15a comes in contact with the oblique surface of the fixed prism 14, outgoing light from the input side optical fiber is not totally reflected at the oblique surface of the fixed prism 14, but is incident on the driven prism 15a, and after it is sent from the driven prism 15a to the preliminary optical fiber prism 15b, it is incident on the preliminary optical fiber 20 from the preliminary optical fiber prism 15b.

摘要翻译： 通过缩短输入侧光纤和输出侧光纤之间的光路长度来减小插入损耗，并且减小驱动部件的行程。 输入侧光纤和彼此平行布置的预备光纤和彼此平行布置的输出侧光纤被布置成两级，并且固定棱镜14布置成与它们的端面相对。 预定光纤棱镜15b设置在与预备光纤20相对的固定棱镜14的一个倾斜表面上，并且从动棱镜15a可以与一个倾斜表面接触并从其分离 固定棱镜14和从动棱镜15a可以沿输入侧光纤移动。 在从动棱镜15a与固定棱镜14的倾斜表面接触的位置处，来自输入侧光纤的出射光在固定棱镜14的倾斜表面处不被全反射，而是被入射到被驱动 棱镜15a，从从动棱镜15a发送到预备光纤棱镜15b后，从预备光纤棱镜15b入射到预备光纤20上。