公开(公告)号：US4945776A

公开(公告)日：1990-08-07

申请号：US285701

申请日：1988-12-16

申请人： Takeshi Yamada ,  Tsutomu Onodera ,  Hiroyuki Taya

发明人： Takeshi Yamada ,  Tsutomu Onodera ,  Hiroyuki Taya

IPC分类号： G02B6/12 ,  C03B23/207 ,  G01M11/00 ,  G02B6/255

CPC分类号： G01M11/37 ,  G02B6/2551

摘要： In a method of testing a spliced portion of exposed fiber portions of optical fibers, the optical fibers are arranged with each other in line so that ends of the exposed fiber portions are spaced apart from each other by a predetermined distance. The ends of the exposed fiber portions are heated and melted by discharge heating. The optical fibers are then moved in the abutment or closing directions by a predetermined distance, so that the ends of the exposed fiber portions abut against each other to form a spliced portion. The minimum outer diameter value d of the spliced portion is measured. Ratio d/D of minimum value d to value D of the outer diameter of exposed fiber portion is calculated. Spliced portions having splicing defects can be detected by detecting of spliced portions having ratio d/D of less than 1 (d/D

公开(公告)号：US5158591A

公开(公告)日：1992-10-27

申请号：US595265

申请日：1990-10-09

申请人： Tsutomu Onodera ,  Takeshi Yamada ,  Hiroyuki Taya

发明人： Tsutomu Onodera ,  Takeshi Yamada ,  Hiroyuki Taya

IPC分类号： G02B6/255

CPC分类号： G02B6/2551

摘要： In an optical fiber ribbon fusion-splicing device, a TV camera is set such that the horizontal direction of an image sensor contained in the TV camera in which direction a horizontal scanning is carried out and the resolution of the image sensor is higher than that in the vertical direction in which a vertical scanning is carried out is a direction perpendicular to the coaxial direction of a pair of grooved supporting members for supporting fibers of a pair of optical fiber ribbons to be fusion-spliced. Thus, when the fibers of the pair of optical fiber ribbons are set on the supporting members in the coaxial direction thereof, the horizontal direction of the image sensor is perpendicular to the coaxial direction of the fibers of the optical fiber ribbon. Since, therefore, misalignment of the fibers is involved in the high resolution direction, the misalignment can be detected with high precision, without decreasing the power factor of the image sensor.

公开(公告)号：US4978201A

公开(公告)日：1990-12-18

申请号：US302617

申请日：1989-01-26

申请人： Takeshi Yamada ,  Tsutomu Onodera ,  Hiroyuki Taya

发明人： Takeshi Yamada ,  Tsutomu Onodera ,  Hiroyuki Taya

IPC分类号： G01M11/02 ,  G01B11/27 ,  G01M11/00 ,  G02B6/24 ,  G02B6/255 ,  G02B6/38

CPC分类号： G02B6/2555 ,  G01B11/272 ,  G01M11/37 ,  G02B6/2551

摘要： In a method for estimating a splice loss of a spliced portion of a fusion-spliced optical fiber, an amount of axial deviation attained prior to or immediately after heating a pair of optical fibers and an amount of axial deviation attained upon completion of heat treatment on the optical fibers are first detected to provide a difference between the axial deviations, and a splice loss originated from an opposite-phase core distortion is estimated based on the difference between the axial distortions.

公开(公告)号：US5024501A

公开(公告)日：1991-06-18

申请号：US506402

申请日：1990-04-09

申请人： Hiroyuki Taya ,  Mikio Yoshinuma ,  Takeshi Yamada ,  Kenji Nishide ,  Fumio Suzuki ,  Hirohisa Fujimoto ,  Ryozo Yamauchi

发明人： Hiroyuki Taya ,  Mikio Yoshinuma ,  Takeshi Yamada ,  Kenji Nishide ,  Fumio Suzuki ,  Hirohisa Fujimoto ,  Ryozo Yamauchi

IPC分类号： G02B6/28

CPC分类号： G02B6/2843

摘要： The present invention discloses a manufacturing method for polarization maintaining optical fiber couplers which are used for joining light signals and at optical fiber branch points. The disclosed manufacturing method employs polarization maintaining optical fibers, and describes a method for mutually aligning the stress applying parts of such optical fibers so that polarized optical signals are maintained in the polarized state when transiting such couplers.

公开(公告)号：US4911524A

公开(公告)日：1990-03-27

申请号：US355919

申请日：1989-05-23

申请人： Kenichiroh Itoh ,  Mikio Yoshinuma ,  Naomichi Suzuki ,  Takeshi Yamada ,  Hiroyuki Taya

发明人： Kenichiroh Itoh ,  Mikio Yoshinuma ,  Naomichi Suzuki ,  Takeshi Yamada ,  Hiroyuki Taya

IPC分类号： G02B6/255

CPC分类号： G02B6/2551

摘要： .theta.-clamp also serves as a jacket clamp. The clamp comprises a cover mounted on an arm by a hinge and kept closed by a magnet, so that a pusher provided in the cover is urged against a jacketed portion of an optical fiber by a spring. In this state, the fiber is rotated in a .theta. direction by rotating a dial. .theta.-clamp also serves as a jacket clamp. Therefore, 1. The .theta.-clamp can be positioned close to a fiber clamp. For this reason, the optical fiber is not twisted during .theta.-axes alignment, and a follow-up property of rotation of the optical fiber with respect to rotation of the .theta. axis is improved. In addition, the apparatus need not be adjusted so as not to twist the optical fiber. 2. The distance between fiber clamp and .theta.-clamp is shortened. Therefore, when the optical fiber is clamped and moved in the z direction, the jacketed portion is not flexed. For this reason, a follow-up property of movement of the end face of the optical fiber with respect to movement of a table in the z-axis direction is improved.

公开(公告)号：US5013345A

公开(公告)日：1991-05-07

申请号：US278602

申请日：1988-12-01

申请人： Kenichiroh Itoh ,  Nikio Yoshinuma ,  Naomichi Suzuji ,  Takeshi Yamada ,  Hiroyuki Taya

发明人： Kenichiroh Itoh ,  Nikio Yoshinuma ,  Naomichi Suzuji ,  Takeshi Yamada ,  Hiroyuki Taya

IPC分类号： G02B6/255

CPC分类号： G02B6/2551

摘要： Fusion-splicing polarization maintaining optical fibers includes the steps of: observing a polarization maintaining optical fiber containing stress applying members in a predetermined direction, using a core direct monitoring method to obtain a reference image; aligning the pair of polarization maintaining optical fibers to be fusion-spliced; automatically rotating the fibers while observing them with the core direct monitoring method until the images of the pair coincide with the reference image; and fusion splicing the pair together.

公开(公告)号：US08469611B2

公开(公告)日：2013-06-25

申请号：US13052679

申请日：2011-03-21

申请人： Hiroyuki Taya

发明人： Hiroyuki Taya

IPC分类号： G02B6/255

摘要： A method for connecting optical fibers and a connection structure of optical fibers capable of suppressing axial misalignment between cores in end-to-end connection of optical fibers at least one of which has a clad for a non-circular shape.The method includes: a preparing step of preparing a pair of optical fibers 30, 50 including a first optical fiber 30 having a clad 32 of a non-circular shape and a second optical fiber 50 having a clad 52 of a circular shape; a forming step of forming the clad 32 of the first optical fiber 30 at and near one end 35 thereof to have a more circular shape from the non-circular shape; an aligning step of observing in side view the first and second optical fibers 30, 50 and aligning a core 31 of the first optical fiber 30 at and near the one end 35 thereof and a core 51 of the second optical fiber 50 at and near one end 55 thereof in a straight line; and a fusing step of butting the one end 35 of the first optical fiber 30 and the one end 55 of the second optical fiber 50 against each other and fusing the ends together.

公开(公告)号：US08511914B2

公开(公告)日：2013-08-20

申请号：US13052679

申请日：2011-03-21

申请人： Hiroyuki Taya

发明人： Hiroyuki Taya

IPC分类号： G02B6/255

CPC分类号： G02B6/255 ,  G02B6/2551 ,  G02B6/2552

摘要： A method for connecting optical fibers and a connection structure of optical fibers capable of suppressing axial misalignment between cores in end-to-end connection of optical fibers at least one of which has a clad for a non-circular shape.The method includes: a preparing step of preparing a pair of optical fibers 30, 50 including a first optical fiber 30 having a clad 32 of a non-circular shape and a second optical fiber 50 having a clad 52 of a circular shape; a forming step of forming the clad 32 of the first optical fiber 30 at and near one end 35 thereof to have a more circular shape from the non-circular shape; an aligning step of observing in side view the first and second optical fibers 30, 50 and aligning a core 31 of the first optical fiber 30 at and near the one end 35 thereof and a core 51 of the second optical fiber 50 at and near one end 55 thereof in a straight line; and a fusing step of butting the one end 35 of the first optical fiber 30 and the one end 55 of the second optical fiber 50 against each other and fusing the ends together.

摘要翻译： 一种连接光纤的方法和光纤的连接结构，其能够抑制光纤的端对端连接中的芯部之间的轴向未对准，其中至少一个具有非圆形的包层。 该方法包括：制备包括具有非圆形包层32的第一光纤30和具有圆形形状的包层52的第二光纤50的一对光纤30,50的准备步骤; 第一光纤30的包层32在其一端35处和其一端35处形成以从非圆形形状更圆形的形成步骤; 在侧视图中观察第一和第二光纤30,50的对准步骤，并且在其一端35处和第一光纤30的一端35处与第一光纤30的芯部31和第二光纤50的芯部51在一个和接近一个处 其端部55呈直线; 以及将第一光纤30的一端35和第二光纤50的一端55彼此对接并将端部熔合在一起的定影步骤。

公开(公告)号：US20110235982A1

公开(公告)日：2011-09-29

申请号：US13052679

申请日：2011-03-21

申请人： Hiroyuki Taya

发明人： Hiroyuki Taya

IPC分类号： G02B6/255 ,  G02B6/25

CPC分类号： G02B6/255 ,  G02B6/2551 ,  G02B6/2552

摘要： A method for connecting optical fibers and a connection structure of optical fibers capable of suppressing axial misalignment between cores in end-to-end connection of optical fibers at least one of which has a clad for a non-circular shape.The method includes: a preparing step of preparing a pair of optical fibers 30, 50 including a first optical fiber 30 having a clad 32 of a non-circular shape and a second optical fiber 50 having a clad 52 of a circular shape; a forming step of forming the clad 32 of the first optical fiber 30 at and near one end 35 thereof to have a more circular shape from the non-circular shape; an aligning step of observing in side view the first and second optical fibers 30, 50 and aligning a core 31 of the first optical fiber 30 at and near the one end 35 thereof and a core 51 of the second optical fiber 50 at and near one end 55 thereof in a straight line; and a fusing step of butting the one end 35 of the first optical fiber 30 and the one end 55 of the second optical fiber 50 against each other and fusing the ends together.

摘要翻译： 一种连接光纤的方法和光纤的连接结构，其能够抑制光纤的端对端连接中的芯部之间的轴向未对准，其中至少一个具有非圆形的包层。 该方法包括：制备包括具有非圆形包层32的第一光纤30和具有圆形形状的包层52的第二光纤50的一对光纤30,50的准备步骤; 第一光纤30的包层32在其一端35处和其一端35处形成以从非圆形形状更圆形的形成步骤; 在侧视图中观察第一和第二光纤30,50的对准步骤，并且在其一端35处和第一光纤30的一端35处与第一光纤30的芯部31和第二光纤50的芯部51在一个和接近一个处 其端部55呈直线; 以及将第一光纤30的一端35和第二光纤50的一端55彼此对接并将端部熔合在一起的定影步骤。

公开(公告)号：US07699541B2

公开(公告)日：2010-04-20

申请号：US12353645

申请日：2009-01-14

申请人： Koji Ozawa ,  Hiroyuki Taya

发明人： Koji Ozawa ,  Hiroyuki Taya

IPC分类号： G02B6/255

CPC分类号： G02B6/2551

摘要： The present invention is provided for fusion splicing optical fibers with low splice loss even when a shape of a discharge beam for the splicing is distorted. In the present invention, a preliminary discharge is performed with the optical fibers outside a discharge area and an image of the discharge beam thereof is picked up. Based on this image, brightness distributions of the discharge beam are estimated on a plurality of lines in a Z direction that are set in different positions in an X direction, and a discharge center of the beam is found from the plurality of brightness distributions. Then, the abutment portion of the optical fibers is positioned at the discharge center, and a main discharge is performed so as to fusion splice the distal ends of the optical fibers.

摘要翻译： 本发明提供了即使当用于拼接的放电束的形状失真时，具有低接合损耗的熔接光纤。 在本发明中，利用放电区域外的光纤进行预放电，并且其放电光束的图像被拾取。 基于该图像，在设置在X方向上的不同位置的Z方向上的多条线上估计放电光束的亮度分布，并从多个亮度分布中求出光束的放电中心。 然后，光纤的抵接部位于放电中心，进行主放电，从而将光纤的前端熔接。