CN102959446A - 具有减小的偏心载荷的mpo型连接器 - Google Patents

具有减小的偏心载荷的mpo型连接器 Download PDF

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CN102959446A
CN102959446A CN2011800325953A CN201180032595A CN102959446A CN 102959446 A CN102959446 A CN 102959446A CN 2011800325953 A CN2011800325953 A CN 2011800325953A CN 201180032595 A CN201180032595 A CN 201180032595A CN 102959446 A CN102959446 A CN 102959446A
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J·D·夸斯尼
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Panduit Corp
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807—Dismountable connectors, i.e. comprising plugs
    • G02B6/3873—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls
    • G02B6/3885—Multicore or multichannel optical connectors, i.e. one single ferrule containing more than one fibre, e.g. ribbon type
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
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    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4202—Packages, e.g. shape, construction, internal or external details for coupling an active element with fibres without intermediate optical elements, e.g. fibres with plane ends, fibres with shaped ends, bundles
    • G—PHYSICS
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    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
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    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4202—Packages, e.g. shape, construction, internal or external details for coupling an active element with fibres without intermediate optical elements, e.g. fibres with plane ends, fibres with shaped ends, bundles
    • G02B6/4203—Optical features
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    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
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    • G02B6/4206—Optical features
    • G—PHYSICS
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    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
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    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
    • G02B6/4207—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms with optical elements reducing the sensitivity to optical feedback
    • G—PHYSICS
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    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
    • G02B6/4207—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms with optical elements reducing the sensitivity to optical feedback
    • G02B6/4208—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms with optical elements reducing the sensitivity to optical feedback using non-reciprocal elements or birefringent plates, i.e. quasi-isolators
    • G—PHYSICS
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    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
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    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
    • G02B6/4207—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms with optical elements reducing the sensitivity to optical feedback
    • G02B6/4208—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms with optical elements reducing the sensitivity to optical feedback using non-reciprocal elements or birefringent plates, i.e. quasi-isolators
    • G02B6/4209—Optical features
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
    • G02B6/421—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical component consisting of a short length of fibre, e.g. fibre stub
    • G—PHYSICS
    • G02—OPTICS
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    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
    • G02B6/4212—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical element being a coupling medium interposed therebetween, e.g. epoxy resin, refractive index matching material, index grease, matching liquid or gel
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
    • G02B6/4214—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical element having redirecting reflective means, e.g. mirrors, prisms for deflecting the radiation from horizontal to down- or upward direction toward a device
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807—Dismountable connectors, i.e. comprising plugs
    • G02B6/381—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres
    • G02B6/3818—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres of a low-reflection-loss type
    • G02B6/3821—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres of a low-reflection-loss type with axial spring biasing or loading means
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807—Dismountable connectors, i.e. comprising plugs
    • G02B6/3873—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls
    • G02B6/3882—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls using rods, pins or balls to align a pair of ferrule ends
    • G02B6/3883—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls using rods, pins or balls to align a pair of ferrule ends using rods, pins or balls to align a plurality of pairs of ferrule ends

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  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Coupling Of Light Guides (AREA)

Abstract

本申请描述了具有内部组件的MPO型连接器，该内部组件具有针夹具（110）、插芯（112）以及光纤阵列。该针夹具具有一对邻接插芯的接触表面（118）。接触表面位于沿插芯的高度的中间点在光纤阵列的任一侧上并靠近光纤阵列。

Description

具有减小的偏心载荷的MPO型连接器
发明领域
本发明总地涉及多光纤推入（multifiberpush-on）（MPO）型连接器，且具体涉及将弹簧载荷引导到更靠近连接器纵向中心线的插芯上的MPO型连接器的内部组件。
发明背景
由于对提高密度和高速多光纤（多通道）数据传输协议的发展的需求，MPO型连接器逐渐变得受欢迎。这些需求甚至导致制造出具有大于12根光纤芯数的MPO连接器。但是，该增加的光纤芯数密度使得MPO连接器更容易受到由偏心载荷引起的冲击作用的影响。偏心载荷在插芯端面上产生不均匀的压力，致使物理接触减少并致使插入损耗增加和回波损耗降低。过去的方案通常包括增加由弹簧施加给插芯的载荷；但是，增加每个光纤的载荷以确保良好的物理接触通常不是理想的，因为这致使在光纤末梢处高的应力并随着时间的流逝在施加时可致使光纤损坏或光纤活塞式运动。
发明内容
本申请描述了具有内部组件的MPO型连接器，该内部组件具有针夹具、插芯，以及光纤阵列。该针夹具具有一对毗邻插芯的接触表面。接触表面位于沿插芯的高度的中间点在光纤阵列的任一侧上并靠近光纤阵列。
附图简介
图1是偏心载荷降低的MPO型连接器的立体图。
图2和3是图1所示连接器的立体剖视图。
图4是图1所示连接器的内部组件的俯视图。
图5是图1所示连接器的内部组件的侧视图。
图6a和6b是图1所示连接器的内部组件的立体图，重点关注针夹具。
图7是图1所示连接器的正视图。
图8是图1所示连接器的内部组件的针夹具和插芯的侧视图，突出沿y方向的降低的偏移力。
图9是图1所示连接器的内部组件的针夹具和插芯的侧视图，突出沿x方向的降低的偏移力。
图10是偏移载荷降低的MPO型连接器的第一替代实施例的内部组件的俯视图，重点关注针夹具。
图11是图10所示内部组件的正视图。
图12是图10所示内部组件的立体图。
图13是图10所示内部组件的针夹具和插芯的侧视图，突出沿y方向的降低的偏移力。
图14是图10所示内部组件的针夹具和插芯的侧视图，突出沿x方向的降低的偏移力。
图15a和15b是偏移载荷降低的MPO型连接器的第二替代实施例的插芯和光纤阵列的立体图。
图16是图15a和15b所示实施例的针夹具、插芯以及光纤阵列的侧视图。
图17是图15a和15b所示实施例的针夹具、插芯以及光纤阵列的俯视图。
图18是偏心载荷降低且具有可伸缩销组件特征的MPO型连接器的内部组件的第二实施例的俯视图。
图19是图18所示内部组件的剖视侧视图。
较佳实施例的详述
图1-9示出了偏心载荷降低的MPO连接器100。如图2-9所示，连接器的内部组件包括弹簧推件102（在图4和5中示出）、弹簧104、纤维阵列106、插芯导入件108、针夹具110、插芯112（一实施例中，插芯可以是标准的FOCIS-5标准插芯），以及多个磨光的光纤末梢114（在图7中示出）。光纤芯数可以是从1-72或更多光纤。弹簧104可以围绕纤维阵列106并在一端接合弹簧推件102，而在另一端接合针夹具110。如图6a和6b所突出的，弹簧104位于弹簧夹座116以关于插芯112的中心中心地定位接触表面。针夹具110将载荷从弹簧104传递到插芯112。
针夹具110经由一对接触表面118接触插芯112的后部。接触表面118位于沿插芯112的高度的中间点（在图4-9中，接触表面沿x轴线，x轴线沿插芯的宽度方向，而y轴线则沿插芯的高度方向）并在纤维阵列106的任一侧上在纤维阵列106的大小的允许范围内尽量靠近宽度的中心线（尽量靠近y轴线）。该设计防止沿插芯112的y方向任何实质性的偏心载荷并限制沿x方向的偏心载荷。或者，接触表面可以延伸成使得附加地或替代于在每个对齐孔122和光纤阵列106之间形成的接触，与对齐孔122的插芯外侧形成接触（见图6a和6b）。
12之后的下一普遍采用的光纤芯数是24，其每个采用两排12光纤。图7示出了24芯数MPO连接器的前连接器面。由于该纤维布置，重要的是将弹簧力直接集中到纤维末梢区域而不将一排或列偏向另一排或列。目前的MPO连接器通常存在问题，其中，一排或象限纤维表现良好而另一排或象限纤维表现不好。
图8和9示出了由弹簧104产生的力如何通过针夹具110定心在插芯112上，获得纤维末梢114所位于的插芯112的前部上的反作用力。在某些实施例中，沿y方向的偏移力的位置同时从标准24芯数MPO连接器的顶部和底部显著地降低差不多1.5mm。某些实施例中，沿x方向的偏移也从每侧降低约0.5mm。沿y方向的偏移的降低减少了关于x轴线施加的任何力矩，这改善了各排之间的纤维接触。沿x方向的偏移的降低减少了关于y轴线施加的任何力矩，这改善了各象限之间的纤维接触。目标是最小化沿插芯的x中心线和y中心线形成的力矩。
图10-14示出了偏心载荷降低的连接器的第一替代实施例，其中，接触表面118改为位于沿插芯112的宽度的中间点（在图10-14中，接触点沿y轴线，y轴线沿插芯的高度方向，而x轴线沿插芯的宽度方向）并在纤维阵列106的任一侧上在纤维阵列106的大小的允许范围内尽量靠近高度的中心线（尽量靠近x轴线）。
图13和14示出了沿x方向的偏移力如何从标准24芯数MPO连接器的两侧显著地降低差不多2.4mm。沿y方向的偏移也从同时顶部和底部降低约0.6mm。
图15-17示出第二替代实施例，其中，凸起的表面118可位于插芯112上而不是针夹具110上。
图18和19示出了内部组件200的一实施例，内部组件200包括可伸缩针组件，其类似于美国专利申请No.12/909,974中描述的可伸缩针组件，该申请整体以参见的方式纳入本文。该实施例中，内部组件200具有修改的针夹具210，其容纳连接到对齐针248的突片242。突片242和对齐针248可相对于内部组件200的其他部分轴线向向前移动和向后移动，允许连接器具有公构造或母构造。突片242可具有柔性腿244，柔性腿244可与间隙246组合以允许对齐针相对于针夹具210径向移动（而保持相对于插芯112静止）以帮助降低偏心载荷。
虽然已说明和描述了本发明的特定实施例和应用，但是应理解本发明并不被限于本文中公开的确切构造和组成，并且各种修改、改变和变型从前述内容可能变得明显而不脱离所述的本发明的精神和范围。

Claims (16)

1.一种用于光纤连接器的内部组件，包括：
插芯；
附连至所述插芯的光纤阵列；
针夹具，所述针夹具具有一对凸起的接触表面，所述一对凸起的接触表面邻接所述插芯的后表面，靠近所述插芯的高度的中心线并位于所述光纤阵列的相对侧上；以及
弹簧，所述弹簧构造成对弹簧夹具施加力以使所述弹簧夹具毗邻所述插芯。
2.如权利要求1所述的内部组件，其特征在于，还包括弹簧推件，其中，所述弹簧的第一端与所述针夹具接触，而所述弹簧的第二端则与所述弹簧推件接触。
3.如权利要求1所述的内部组件，其特征在于，所述针夹具还包括弹簧夹具座，所述弹簧构造成位于所述弹簧夹具座中。
4.如权利要求1所述的内部组件，其特征在于，所述凸起的接触表面靠近所述纤维阵列定位。
5.如权利要求1所述的内部组件，其特征在于，所述插芯还包括位于所述光纤阵列的相对侧上的对齐孔，所述凸起的接触表面靠近所述高度的中心线定位在所述纤维阵列的相对侧上，并位于对齐孔的外侧。
6.如权利要求1所述的内部组件，其特征在于，所述弹簧夹具还包括可伸缩针组件。
7.一种用于光纤连接器的内部组件，包括：
插芯；
附连至所述插芯的光纤阵列；
针夹具，所述针夹具具有一对凸起的接触表面，所述一对凸起的接触表面邻接所述插芯的后表面，靠近所述插芯的宽度的中心线并位于所述光纤阵列的相对侧上；以及
弹簧，所述弹簧构造成对弹簧夹具施加力以使所述弹簧夹具毗邻所述插芯。
8.如权利要求7所述的内部组件，其特征在于，还包括弹簧推件，其中，所述弹簧的第一端与所述针夹具接触，而所述弹簧的第二端则与所述弹簧推件接触。
9.如权利要求7所述的内部组件，其特征在于，所述针夹具还包括弹簧夹具座，所述弹簧构造成位于所述弹簧夹具座中。
10.如权利要求7所述的内部组件，其特征在于，所述凸起的接触表面靠近所述纤维阵列定位。
11.如权利要求7所述的内部组件，其特征在于，所述弹簧夹具还包括可伸缩针组件。
12.一种用于光纤连接器的内部组件，包括：
针夹具；
插芯；
附连至所述插芯的光纤阵列，其中所述插芯具有一对凸起的接触表面，所述一对凸起的接触表面靠近所述插芯的高度的中心线并位于所述光纤阵列的邻接所述针夹具的对侧上；以及
弹簧，所述弹簧构造成对弹簧夹具施加力以使所述弹簧夹具毗邻所述插芯。
13.如权利要求12所述的内部组件，其特征在于，还包括弹簧推件，其中，所述弹簧的第一端与所述针夹具接触，而所述弹簧的第二端则与所述弹簧推件接触。
14.如权利要求12所述的内部组件，其特征在于，所述针夹具还包括弹簧夹具座，所述弹簧构造成位于所述弹簧夹具座中。
15.如权利要求12所述的内部组件，其特征在于，所述凸起的接触表面靠近所述纤维阵列定位。
16.如权利要求12所述的内部组件，其特征在于，所述弹簧夹具还包括可伸缩针组件。
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