CN207067446U - 光学次模组 - Google Patents

光学次模组 Download PDF

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Publication number
CN207067446U
CN207067446U CN201720429318.0U CN201720429318U CN207067446U CN 207067446 U CN207067446 U CN 207067446U CN 201720429318 U CN201720429318 U CN 201720429318U CN 207067446 U CN207067446 U CN 207067446U
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secondary group
lens
lock pin
optical secondary
short fiber
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许伟宏
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Foxconn Kunshan Computer Connector Co Ltd
Foxconn Interconnect Technology Ltd
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Foxconn Kunshan Computer Connector Co Ltd
Foxconn Interconnect Technology Ltd
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    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24Coupling light guides
    • G02B6/36Mechanical coupling means
    • G02B6/38Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807Dismountable connectors, i.e. comprising plugs
    • G02B6/3833Details of mounting fibres in ferrules; Assembly methods; Manufacture
    • G02B6/3863Details of mounting fibres in ferrules; Assembly methods; Manufacture fabricated by using polishing techniques
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B19/00Single-purpose machines or devices for particular grinding operations not covered by any other main group
    • B24B19/22Single-purpose machines or devices for particular grinding operations not covered by any other main group characterised by a special design with respect to properties of the material of non-metallic articles to be ground
    • B24B19/226Single-purpose machines or devices for particular grinding operations not covered by any other main group characterised by a special design with respect to properties of the material of non-metallic articles to be ground of the ends of optical fibres
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24Coupling light guides
    • G02B6/36Mechanical coupling means
    • G02B6/38Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807Dismountable connectors, i.e. comprising plugs
    • G02B6/3833Details of mounting fibres in ferrules; Assembly methods; Manufacture
    • G02B6/3854Ferrules characterised by materials
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24Coupling light guides
    • G02B6/42Coupling light guides with opto-electronic elements
    • G02B6/4201Packages, e.g. shape, construction, internal or external details
    • G02B6/4204Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
    • G02B6/421Packages, 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
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24Coupling light guides
    • G02B6/42Coupling light guides with opto-electronic elements
    • G02B6/4201Packages, e.g. shape, construction, internal or external details
    • G02B6/4204Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
    • G02B6/4214Packages, 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
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24Coupling light guides
    • G02B6/42Coupling light guides with opto-electronic elements
    • G02B6/4292Coupling light guides with opto-electronic elements the light guide being disconnectable from the opto-electronic element, e.g. mutually self aligning arrangements
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24Coupling light guides
    • G02B6/36Mechanical coupling means
    • G02B6/38Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807Dismountable connectors, i.e. comprising plugs
    • G02B6/381Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres
    • G02B6/3818Dismountable 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
    • G02B6/3822Dismountable 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 beveled fibre ends
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24Coupling light guides
    • G02B6/42Coupling light guides with opto-electronic elements
    • G02B6/4201Packages, e.g. shape, construction, internal or external details
    • G02B6/4204Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
    • G02B6/4212Packages, 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

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Optical Couplings Of Light Guides (AREA)

Abstract

一种光学次模组,其包括透镜及与所述透镜相组装的短光纤插芯,所述透镜包括收容所述短光纤插芯的收容孔,所述短光纤插芯包括与所述透镜相对接的对接面,所述对接面具有APC型端面。

Description

光学次模组
【技术领域】
本实用新型涉及一种光学次模组,尤其涉及具有短光纤插芯的光学次模组。
【背景技术】
现有技术请参阅图1至图3所示,一种光学次模组100包括透镜1及与所述透镜1相组装的短光纤插芯2,所述短光纤插芯2与透镜1相对接的对接面21为PC(PhysicalContact)型端面,所述PC型端面为球面研磨的端面。但随着光传输速度要求越来越高,使用上述光学次模组,光回波损耗分析图请参图3所示,其中,第一线条400为透镜1的光回波损耗曲线,第二线条500为光学次模组100的光回波损耗曲线,光回波损耗的dB值有很大面积位于标准的26dB以下,因光回波损耗的dB值越小,光回波损耗越大,故,图 3中产品良率很低。为了提高光回波损耗的dB值,降低光回波损耗,通常在 PC型端面上套设一个防反射层,然而增加防反射层也无法很大程度上降低损耗,无法大面积提升良率,反而,增加防反射层还大大提高了生产成本。
因此,有必要设计一种新的光学次模组,降低光回波损耗以提升产品良率。
【实用新型内容】
本实用新型所要解决的技术问题是提供一种具有较低的光回波损耗的光学次模组。
为解决上述技术问题,本实用新型可以采用如下技术方案:一种光学次模组,其包括透镜及与所述透镜相组装的短光纤插芯,所述透镜包括收容所述短光纤插芯的收容孔,所述短光纤插芯包括与所述透镜相对接的对接面,所述对接面具有APC型端面。
进一步的,所述透镜还包括位于所述收容孔底部且与所述短光纤插芯对接的底面。
进一步的,所述对接面还具有与所述底面相配合的配合端面。
进一步的,所述配合端面与所述底面相互平行。
进一步的,所述配合端面与所述APC型端面相互连接,且所述配合端面位于所述APC型端面的上部。
进一步的,所述APC型端面为具有一定角度的球面。
进一步的,所述APC型端面的研磨角度范围为4°~45°。
进一步的,所述APC型端面的研磨角度为8°。
进一步的,所述短光纤插芯还具有远离所述透镜的另一端面,所述另一端面为PC型端面。
进一步的,所述透镜还包括用于发射光线的反射面。
进一步的,所述透镜还包括用于发射光线的反射面,所述短光纤插芯还包括设置于所述对接面上且用于降低光回波损耗的折射率匹配的环氧树脂。
相较于现有技术,本实用新型的优点在于:本实用新型光学次模组通过将短光纤插芯中与透镜对接的对接面设计为APC型端面,降低光回波损耗,大大提升产品良率。
【附图说明】
图1是现有技术光学次模组的立体分解图。
图2是现有技术光学次模组的剖视图。
图3是图2所示光学次模组的回波损耗分析图。
图4是本实用新型光学次模组的立体图。
图5是本实用新型光学次模组的第一实施例的立体分解图。
图6是本实用新型光学次模组的第一实施例另一视角的立体分解图。
图7是本实用新型光学次模组的第一实施例沿图4中A-A线的剖视图。
图8是图5中所示光学次模组中的短光纤插芯的主视图。
图9是本实用新型光学次模组的第二实施例沿图4中A-A线的剖视图。
图10是本实用新型光学次模组的第二实施例中的短光纤插芯的主视图。
图11是图6所示光学次模组的回波损耗分析图。
【主要元件符号说明】
光学次模组 100、200、300 透镜 1、3
收容孔 30 底面 31
反射面 34 短光纤插芯 2、4、4’
对接面 21、41 配合端面 411
APC型端面 412 另一端面 42
第一线条 400 第二线条 500
第三线条 600 第四线条 700
如下具体实施方式将结合上述附图进一步说明本实用新型。
【具体实施方式】
如图4-7所示为本实用新型第一实施例,本实施例中,光学次模组200 用以耦合光传输介质(未图示)与光电模组(未图示)。所述光学次模组200 包括透镜3及与所述透镜3相组装的短光纤插芯4。
所述透镜3包括反射面34、收容所述短光纤插芯4的收容孔30、位于所述收容孔30底部且与所述短光纤插芯4对接的底面31。所述反射面34用于将输入光反射到光电二极体(未图示)上。所述短光纤插芯4包括与所述透镜3对接的对接面41及远离所述透镜3的另一端面42。所述对接面41包括与所述底面31配合的配合端面411及连接所述配合端面411的APC (Angled-Physical Contact)型端面412。所述APC型端面为斜球面研磨的端面。短光纤插芯4与透镜组装时,因配合端面411与底面31为平行面或者近似平行的面,使得通过配合端面411与底面31对接,形成一个基准面,实现 APC型端面412的定位。本实施例中,APC型端面412的研磨角度范围优选 4°~45°,当研磨角度为8°时,光回波损耗最低。图11为图6所示的光学次模组200的光回波损耗分析图,其中,第三线条600为透镜3的光回波损耗曲线,第四线条700为光学次模组200的光回波损耗曲线。由图11可以看出,本实用新型光学次模组200的光回波损耗值大部分大于37dB,100%超出标准的26dB的要求,产品的良率大大提升。本实施例中,另一端面42为 PC型端面,在其他实施例中,也可以根据实际需求,将另一端面41也设置为另一APC型的端面。本实施例中,对接面41通过设置可以与底面31平行或者近似平行的配合端面411,使得短光纤插芯4在与透镜3对接时,配合端面411与底面31能够形成一个对接基准面。同时,又通过设置与配合端面 411相连的APC型端面412,实现降低光回波损耗的效果。本实用新型中,短光纤插芯4还可以增设一个设置于所述对接面41上的折射率匹配的环氧树脂(未图示),通过在对接面41上涂一层折射率匹配的环氧树脂以降低光回波损耗。
第一实施例仅为本实用新型的最佳实施例,在其他实施例中,对接面只要设有APC型端面即可,不限于第一实施例的结构,例如不设置配合端面 411,或者再增设其他端面也可。例如,请参图9至图10所示,为本实用新型第二实施例,光学次模组300包括透镜3及与所述透镜3相组装的短光纤插芯4’。所述短光纤插芯4’包括与所述透镜3对接的对接面及远离所述透镜 3的另一端面42。其中,对接面仅包括APC型端面412。此实施例中,APC 型端面412也可以大大提升回波损耗,满足良率需求。

Claims (10)

1.一种光学次模组,其包括透镜及与所述透镜相组装的短光纤插芯,所述透镜包括收容所述短光纤插芯的收容孔,其特征在于:所述短光纤插芯包括与所述透镜相对接的对接面,所述对接面具有APC型端面。
2.如权利要求1所述的光学次模组,其特征在于:所述透镜还包括位于所述收容孔底部且与所述短光纤插芯对接的底面。
3.如权利要求2所述的光学次模组,其特征在于:所述对接面还具有与所述底面相配合的配合端面。
4.如权利要求3所述的光学次模组,其特征在于:所述配合端面与所述底面相互平行。
5.如权利要求3所述的光学次模组,其特征在于:所述配合端面与所述APC型端面相互连接,且所述配合端面位于所述APC型端面的上部。
6.如权利要求1所述的光学次模组,其特征在于:所述APC型端面为具有一定角度的球面。
7.如权利要求6所述的光学次模组,其特征在于:所述APC型端面的研磨角度范围为4°~45°。
8.如权利要求6所述的光学次模组,其特征在于:所述APC型端面的研磨角度为8°。
9.如权利要求1所述的光学次模组,其特征在于:所述短光纤插芯还具有远离所述透镜的另一端面,所述另一端面为PC型端面。
10.如权利要求1所述的光学次模组,其特征在于:所述透镜还包括用于发射光线的反射面,所述短光纤插芯还包括设置于所述对接面上且用于降低光回波损耗的折射率匹配的环氧树脂。
CN201720429318.0U 2017-04-21 2017-04-21 光学次模组 Active CN207067446U (zh)

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JP2003215388A (ja) * 2002-01-25 2003-07-30 Hitachi Metals Ltd レンズ付き光ファイバー組立体とその製造方法
JP4903120B2 (ja) * 2007-10-03 2012-03-28 株式会社フジクラ 光路変更部材
JP4896231B2 (ja) * 2007-11-15 2012-03-14 日本電信電話株式会社 光回路およびそれを用いた光信号処理装置
KR101144665B1 (ko) * 2010-09-20 2012-05-24 옵티시스 주식회사 파장 분할 다중화 및 역다중화 장치
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US9304266B2 (en) * 2014-01-08 2016-04-05 Avago Technologies General Ip (Singapore) Pte. Ltd. Optical communications module having an optical port that prevents relative movement from occurring between the optical port and a ferrule that is mated with the optical port
CN105093430B (zh) * 2014-04-25 2017-11-28 祥茂光电科技股份有限公司 光耦合元件及应用光耦合元件的光学模块
CN106154444B (zh) * 2015-04-28 2018-12-28 华为技术有限公司 光收发器及光通信产品

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