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1.发明授权
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.
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2.发明授权Method and apparatus for fusion-splicing polarization maintaining optical fibers 失效用于熔接偏振保持光纤的方法和装置
公开(公告)号：US4911524A
公开(公告)日：1990-03-27
申请号：US355919
申请日：1989-05-23
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.
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3.发明授权Apparatus for fusion-splicing a pair of polarization maintaining optical fibers 失效用于融合分离保持光纤的极化对象的装置
公开(公告)号：US5147434A
公开(公告)日：1992-09-15
申请号：US686750
申请日：1991-04-16
CPC分类号： G02B6/2555 , G02B6/2551 , G02B6/3805
摘要： An apparatus for fusion splicing optical fibers has one rotatable clamp mechanism that is manually operated, a second rotatable clamp mechanism that is operated by a motor and a twist preventing means removably coupled to the apparatus with an arm member. A rapid fine adjustment of the alignment of the polarization maintaining optical fibers can be made.
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公开(公告)号：US5156663A
公开(公告)日：1992-10-20
申请号：US686747
申请日：1991-04-16
CPC分类号： G02B6/2555 , G02B6/2551 , G02B6/3805
摘要： An apparatus for fushion splicing optical fiber with three pairs at clamps; the outermost pair of clamps has one rotatable clamp mechanism that is manually operated and a second rotatable clamp mechanism that is operated by a motor. A rapid fine adjustment of the alignment of the polarization maintaining optical fibers can be made.
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5.发明授权
公开(公告)号：US5149350A
公开(公告)日：1992-09-22
申请号：US633764
申请日：1990-12-26
CPC分类号： G02B6/2555 , G02B6/2551 , G02B6/3805
摘要： An apparatus for fusion splicing optical fibers has one rotatable clamp mechanism that is manually operated and a second rotatable clamp mechanism that is operated by a motor. A three position stopper functions in the first position as a stopper against the optical fibers when the optical fibers are moved toward each other and in the second position as a mirror for reflecting an image of respective end faces of the optical fibers. A rapid fine adjustment of the alignment of the polarization maintaining optical fibers can be made.
摘要翻译： 用于熔接光纤的装置具有手动操作的一个可旋转夹紧机构和由电动机操作的第二可旋转夹紧机构。 当光纤彼此相对移动并且在第二位置中时，三位置限位器作为阻挡光纤的阻挡器在第一位置中起作用，用于反射光纤的各个端面的图像。 可以进行极化保持光纤的对准的快速微调。
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6.发明授权
公开(公告)号：US4986843A
公开(公告)日：1991-01-22
申请号：US379690
申请日：1989-07-11
CPC分类号： G02B6/2555 , G02B6/2551 , G02B6/3805
摘要： An apparatus for fusion splicing optical fibers has one rotatable clamp mechanism that is manually operated and a second rotatable clamp mechanism that is operated by a motor. A rapid fine adjustment of the alignment of the polarization maintaining optical fibrs can be made.
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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
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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.
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公开(公告)号：US5013345A
公开(公告)日：1991-05-07
申请号：US278602
申请日：1988-12-01
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.
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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
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.
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