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公开(公告)号：EP0774678A1
公开(公告)日：1997-05-21
申请号：EP96850176.7
申请日：1996-10-22
发明人： Zheng, Wenxin
IPC分类号： G02B6/255
CPC分类号： G02B6/2551
摘要： In the determination of the angular rotational position of an axial asymmetry, such as of optically inhomogeneous regions, in an optically transparent body, e.g. stress concentration zones of optical PM-fibers, where the body is located in arbitrary angular start positions, the body is illuminated during rotations thereof to different angular positions around its longitudinal axis. For different angular positions the difference is then determined between light, which has passed through the fiber end and in its position corresponds to the central part of the fiber, and light, which has passed through the fiber end and in its position corresponds to the region of the fiber located immediately outside the central part. These differences, considered as a function of the rotation angle, constitute a curve having a shape typical of the considered body. This curve is compared to a reference curve, for different translational positions of the reference curve, and that translation position is found, where a maximum agreement is obtained of the curves. The translation value of this translational position gives the angular offset of the body from a reference position. By this method a correct alignment can be made of for example two optical PM-fibers of different types and also the basic type of an unknown PM-fiber can be determined.
摘要翻译： 在光学透明体中，例如光学不均匀区域的轴不对称角旋转位置的确定中，例如， 光学PM光纤的应力集中区域，其中身体位于任意角度起始位置，身体在其旋转期间被照射到围绕其纵向轴线的不同角位置。 对于不同的角度位置，然后在已经通过光纤端部的光线和其对应于光纤的中心部分的光线之间确定差异，并且已经穿过光纤端部并且在其位置中的光线对应于该区域 位于紧邻中心部分的纤维上。 被认为是旋转角度的函数的这些差异构成具有被考虑体的典型形状的曲线。 将该曲线与参考曲线进行比较，对于参考曲线的不同平移位置，并且找到平移位置，其中获得曲线的最大一致性。 该平移位置的平移值给出了身体与参考位置的角度偏移。 通过这种方法，可以对例如不同类型的两个光学PM-纤维进行正确的对准，并且还可以确定未知的PM-纤维的基本类型。
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2.发明公开Determination of angular position of weak axial asymmetries of optical fibers and alignment of and splicing fibers 失效确定光学纤维的弱轴不对称和对准和纤维的剪接的角位置
公开(公告)号：EP0819958A1
公开(公告)日：1998-01-21
申请号：EP97850115.3
申请日：1997-07-15
发明人： Zheng, Wenxin
IPC分类号： G02B6/255
CPC分类号： G01M11/37 , G02B6/2551
摘要： In the determination of the angular rotational position of axial asymmetries of bodies like optical PM-fibers such a body or fiber is illuminated during rotations (201) thereof to different angular positions around its longitudinal axis. For different angular positions the difference is then determined between light, which has passed through the fiber end and in its position corresponds to the central part of the fiber, and light, which has passed through the fiber end and in its position corresponds to the region of the fiber located immediately outside the central part. These differences, considered as a function of the rotation angle, constitute a curve that is analyzed (205) for finding the regions thereof having the steepest descent or increase, such as a valley region. Only these regions are then used (207, 209) for determining the position of the optical asymmetries. Thus the fiber can be rotated (207) during only this interval determining the curve more accurately by using more densely spaced measurement points within the interval. Such a determination is particularly suited for PM-fibers having very small optical asymmetries such as fibers having an elliptical core.
摘要翻译： 在像光学PM-纤维体的轴向不对称的角度旋转位置的确定检查的身体或纤维被旋转（201）到其围绕其纵向轴线的不同角位置期间照亮。 对于不同的角位置的差然后确定性光，其具有通过纤维端部，并在其位置对应于所述纤维的中心部分，和光，其具有通过纤维端部，并在其位置通过传递之间开采对应于区域 的紧位于中央部的外侧的纤维。 这些差异，考虑作为旋转角度的函数，构成了曲线也被用于发现的区域及其具有最陡下降或上升，检查作为谷区域进行分析（205）。 然后仅将这些区域中使用（207，209），用于确定采矿光学不对称的位置。 因此，纤维可以在此间隔仅确定性采矿曲线更精确地由间隔内使用更密集间隔的测量点设定过程中旋转（207）。 这样的确定是特别适用于具有非常小的光纤不对称PM-纤维：诸如具有到椭圆芯。
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公开(公告)号：EP0774678B1
公开(公告)日：2010-02-24
申请号：EP96850176.7
申请日：1996-10-22
发明人： Zheng, Wenxin
IPC分类号： G02B6/255
CPC分类号： G02B6/2551
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公开(公告)号：EP0687928B1
公开(公告)日：2002-08-28
申请号：EP95850111.6
申请日：1995-06-15
发明人： Zheng, Wenxin , Ström, Joakim
IPC分类号： G02B6/255
CPC分类号： G02B6/2551
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5.发明授权Determination of angular position of weak axial asymmetries of optical fibers and alignment of and splicing fibers 失效确定光学纤维的弱轴不对称和对准和纤维的剪接的角位置
公开(公告)号：EP0819958B1
公开(公告)日：2007-09-12
申请号：EP97850115.3
申请日：1997-07-15
发明人： Zheng, Wenxin
IPC分类号： G02B6/255
CPC分类号： G01M11/37 , G02B6/2551
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公开(公告)号：EP0740171B1
公开(公告)日：2005-06-22
申请号：EP96850082.7
申请日：1996-04-26
发明人： Zheng, Wenxin , Hultén, Ola
CPC分类号： G02B6/2551 , G02B6/266
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公开(公告)号：EP0890853A1
公开(公告)日：1999-01-13
申请号：EP98850099.7
申请日：1998-06-09
发明人： Zheng, Wenxin , Hultén, Ola
CPC分类号： G02B6/2551
摘要： When splicing optical fibers of different kinds to each other by means of arc welding, a matching of the mode field diameters of the fibers is desired. This is accomplished by prolonging (period 55) the heating after making the splice (period 53). During the prolonged heating the hot-fiber indices of the two fiber ends are continuously determined. Either one of these indices or some suitable quantity derived therefrom is all the time compared to a threshold value and when it is reached the heating is stopped. The threshold value has been determined in a preceding stage using test fiber pieces of the same kind in a splicing operation with prolonged heating. Then, in such a threshold level determining stage in addition to the hot-fiber indices, the transmission of light is constantly measured during the heating and when it has its maximum value the corresponding hot-fiber indices are stored and used for deriving the threshold value. This method of matching mode field diameters is simple and takes a short time.
摘要翻译： 当通过电弧焊接将不同种类的光纤彼此拼接时，需要匹配纤维的模场直径。 这是通过在制作拼接之后延长（期间55）加热（期间53）来实现的。 在长时间加热期间，连续确定两个纤维端部的热纤维指数。 与阈值相比，这些指标中的任何一个或从其导出的一些合适的量都是时间，并且当达到加热停止时。 在前一阶段中，使用具有长时间加热的拼接操作中的相同种类的测试纤维片来确定阈值。 然后，除了热纤维指数之外，在这样的阈值水平判定阶段，在加热期间持续测量光的透射，并且当其具有其最大值时，相应的热纤维索引被存储并用于导出阈值 。 这种匹配模场直径的方法简单，花费的时间很短。
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8.发明公开Automatic fusion-temperature control for optical fiber splicers 失效Automatische Steuerung der SchmelztemperaturfürSpleissgerätevon optischen Fasern
公开(公告)号：EP0740172A1
公开(公告)日：1996-10-30
申请号：EP96850083.5
申请日：1996-04-26
发明人： Zheng, Wenxin
CPC分类号： G01K11/06 , G02B6/2551
摘要： For measuring and controlling the temperature of a splice portion between two optical fiber (1, 1') ends, during the splicing process when the material of the ends is heated to be fusioned, the time-dependency of the surface tension effect for viscous liquids is utilized. Then the fiber (1, 1') ends are placed for splicing with a relatively large lateral offset in the retainers (39) of fiber splicer and are spliced by the heat of an electric arc generated between the welding electrodes (43). The heating of the fiber ends is continued, whereby the offset of the fiber ends will gradually decrease due to the surface tension. The offset is then measured at different times during the continued heating and from these determined values and the times when they were measured the temperature of the heated fiber end portions is determined. This temperature value may then be compared to a predetermined set value for control of the heating of the splice region. Hereby also offset attenuators can be made having relatively accurate, predetermined attenuation values.
摘要翻译： 为了测量和控制两个光纤（1,1'）端之间的接合部分的温度，在接头处理期间当端部的材料被加热以被熔化时，粘性液体的表面张力效应的时间依赖性 被利用。 然后将纤维（1,1'）端部放置成用于在纤维捻接器的保持器（39）中具有相对大的侧向偏移的拼接，并且通过在焊接电极（43）之间产生的电弧的热而被接合。 纤维端部的加热继续进行，纤维端部的偏移由于表面张力而逐渐降低。 然后在连续加热期间的不同时间测量偏移量，并测定这些测定值和测量加热纤维端部部分的温度时的时间。 然后将该温度值与预定设定值进行比较，以控制接合区域的加热。 因此，也可以使衰减器具有相对准确的预定衰减值。
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公开(公告)号：EP0740171A1
公开(公告)日：1996-10-30
申请号：EP96850082.7
申请日：1996-04-26
发明人： Zheng, Wenxin , Hultén, Ola
CPC分类号： G02B6/2551 , G02B6/266
摘要： Optical fiber attenuators are produced by splicing two fiber ends by melt-fusioning. The fiber ends are initially placed with a large lateral offset and the heating of the spliced portion is continued during a long time period to completely align the fiber ends, in particular the cores (3) and claddings (2) thereof, and to make material of the fibers cores (3) diffuse (23) into the neighbouring regions of the fiber claddings. By properly choosing the extended time for prolonged heating attenuators can be produced with a good repeatability. The prolonged heating period is significantly shortened by the use of a large initial offset.
摘要翻译： 光纤衰减器是通过熔融融合将两个纤维端接合而产生的。 纤维端部最初放置有较大的侧向偏移，并且接合部分的加热在长时间内持续，以完全对准纤维端部，特别是芯部（3）和包层（2），并使材料 的纤维芯（3）扩散（23）到纤维包层的相邻区域。 通过适当选择长时间加热的延长时间可以产生具有良好重复性的衰减器。 通过使用大的初始偏移量，延长的加热周期被显着缩短。
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公开(公告)号：EP0687928A1
公开(公告)日：1995-12-20
申请号：EP95850111.6
申请日：1995-06-15
发明人： Zheng, Wenxin , Ström, Joakim
IPC分类号： G02B6/255
CPC分类号： G02B6/2551
摘要： When splicing optical fibers (1, 1') by melt-fusioning in an electric arc (7), the electric arc (7) is started, in order to give the fiber splice a large strength, before the ends of the fibers (1, 1') have entered the arc (7) and before they have contacted each other. The arc (7) is in this stage switched on with a low intensity which is increased in the stage when the fiber ends are fusioned to each other. When the electric arc (7) is established having this low intensity and immediately before the contact of the end surfaces and the melt-fusioning, the fiber ends are finely aligned with each other in the lateral direction. It can be performed by means of the optical system and the control means which are provided in commercially available fiber welding apparatus, and the fine alignment will give the splice a low attenuation. For standard fibers of the single-mode type a welding current through the electrodes (5) of approximately 6.5 mA is suitable.
摘要翻译： 当通过在电弧（7）中熔融熔接来接合光纤（1,1'）时，开始电弧（7），以便在纤维（1）的端部之前使纤维接合强度大 ，1'）已经进入电弧（7），并且在它们彼此接触之前。 电弧（7）在该阶段以低强度接通，当光纤端部彼此熔合时，该强度增加。 当电弧（7）被建立为具有这种低强度并且在端面接触之前和熔体熔融时，纤维端在横向彼此精细对准。 可以通过在市售的纤维焊接装置中提供的光学系统和控制装置来执行，并且精细对准将使接头具有低衰减。 对于单模式的标准光纤，通过约6.5mA的电极（5）的焊接电流是合适的。
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