JPH0296104A - Receptacle with light transmission module - Google Patents
Receptacle with light transmission moduleInfo
- Publication number
- JPH0296104A JPH0296104A JP63248751A JP24875188A JPH0296104A JP H0296104 A JPH0296104 A JP H0296104A JP 63248751 A JP63248751 A JP 63248751A JP 24875188 A JP24875188 A JP 24875188A JP H0296104 A JPH0296104 A JP H0296104A
- Authority
- JP
- Japan
- Prior art keywords
- ferrule
- optical fiber
- emitting element
- light
- transmission module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 14
- 239000013307 optical fiber Substances 0.000 claims abstract description 24
- 230000003287 optical effect Effects 0.000 claims description 22
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 230000006866 deterioration Effects 0.000 abstract description 3
- 230000007774 longterm Effects 0.000 abstract description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 2
- 230000010355 oscillation Effects 0.000 abstract description 2
- 239000000919 ceramic Substances 0.000 abstract 1
- 238000001465 metallisation Methods 0.000 abstract 1
- 238000005498 polishing Methods 0.000 abstract 1
- 238000005476 soldering Methods 0.000 abstract 1
- CNQCVBJFEGMYDW-UHFFFAOYSA-N lawrencium atom Chemical compound [Lr] CNQCVBJFEGMYDW-UHFFFAOYSA-N 0.000 description 9
- 239000011148 porous material Substances 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Light Receiving Elements (AREA)
- Optical Couplings Of Light Guides (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Abstract
Description
【発明の詳細な説明】
「産業上の利用分野」
本発明は、光伝送路を形成するための光伝送用モジュー
ル付レセプタクルに関するものである。DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a receptacle with an optical transmission module for forming an optical transmission path.
「従来の技術」
従来の光伝送に使用される発光ダイオード（ＬＥＤ）、
レーザーダイオード（Ｌ Ｄ）などの発光素子を用いた
電気信号−光信号変換用の発光装置あるいはＰＩＮフォ
トダイオード（ＰＩＮ−ＰＤ）、アバランシェフォトダ
イオード（ＡＰＤ）などを受光素子に用いた光信号−電
気信号変換用の受光装置は、第２図に示すようなものが
ある。すなわち、ハウジング１０１の光軸上にレンズ１
０２を配置し、一端側には受発光素子１０３をマウント
したステム１０４を受発光素子１０３が光軸上に位置す
るように配置し、ステム１０４にはガラスまたはサファ
イアなどの透明プレート１０５を前記レンズ１０２と受
発光素子１０３との間に位置するようにして受発光素子
１０３を保護するキャップ１０６が設けられ、ハウジン
グ１０１の他端側にはコネクタを結合させる筒体１０７
が設けられて、発光素子１０３より発する光はレンズ１
０２により集光して伝送し、あるいは、コネクタ側から
伝送されてきた光はレンズ１０２を経て受光素子１０３
に集光される。"Conventional technology" Light emitting diodes (LEDs) used in conventional optical transmission,
A light emitting device for converting electrical signals to optical signals using a light emitting element such as a laser diode (LD), or an optical signal to electrical signal using a light receiving element such as a PIN photodiode (PIN-PD) or avalanche photodiode (APD). There is a light receiving device for signal conversion as shown in FIG. That is, the lens 1 is placed on the optical axis of the housing 101.
02, a stem 104 with a light receiving/emitting element 103 mounted on one end thereof is arranged so that the light receiving/emitting element 103 is located on the optical axis, and a transparent plate 105 made of glass or sapphire is attached to the stem 104, and A cap 106 is provided between the housing 102 and the light receiving/emitting element 103 to protect the light receiving/emitting element 103, and a cylindrical body 107 to which a connector is connected is provided at the other end of the housing 101.
is provided, and the light emitted from the light emitting element 103 is transmitted through the lens 1.
02 and transmits the light, or the light transmitted from the connector side passes through the lens 102 and is transmitted to the light receiving element 103.
The light is focused on.
コネクタ接続の際、コネクタ側へ送伝される光の、発光
素子１０３から放射される全光量に対する割合は、シン
グルモードファイバ用コネクタの場合およそ１５％以上
、マルチモードファイバ用コネフタの場合およそ３０％
以上である。これらの結合効率を維持するために発光素
子１０３から発する光を集光して光コネクタフェルール
中心に位置する光フアイバコア部へ投光するために光学
的な位置合わせを高精度に行っている。また、レンズ１
０２の両端面より反射する光量を減少させるため無反射
コーティングが行われている。さらに、温度変化および
振動などの環境に対する特性を維持するためにレンズ１
０２、モジュールの固定方法およびハウジング１０１、
筒体１０７の材料、構造などに種々の工夫がなされてい
る。When connecting a connector, the ratio of the light transmitted to the connector side to the total amount of light emitted from the light emitting element 103 is approximately 15% or more in the case of a single mode fiber connector, and approximately 30% in the case of a multimode fiber connector.
That's all. In order to maintain these coupling efficiencies, optical alignment is performed with high precision in order to condense the light emitted from the light emitting element 103 and project it to the optical fiber core located at the center of the optical connector ferrule. Also, lens 1
Anti-reflection coating is applied to reduce the amount of light reflected from both end faces of 02. In addition, the lens 1
02, module fixing method and housing 101,
Various improvements have been made to the material, structure, etc. of the cylindrical body 107.
「発明が解決しようとする問題点」
上記のように、従来の発光受光装置では光コネクタのフ
ェルール中心部に位置する光フアイバコア部と受発光素
子１０３とがレンズ１０２の集光点に位置するように高
精度な位置合わせが必要である。“Problems to be Solved by the Invention” As described above, in the conventional light emitting and light receiving device, the optical fiber core portion located at the center of the ferrule of the optical connector and the light receiving/emitting element 103 are located at the light focusing point of the lens 102. Highly accurate positioning is required.
また、高精度位置合わせを要求されていることは逆に温
度変化、振動などの環境条件および長期使用における位
置関係のわずかなズレにより特性が変化することを表し
ている。−さらに、結合効率の特性はレンズ１０２の性
能に左右されるため、レンズ１０２の特性値のバラツキ
などにより完成品全体の特性が低下する。上記理由によ
り量産が困難であり低コスト化の障害となっている。Furthermore, the fact that highly accurate positioning is required means that the characteristics change due to environmental conditions such as temperature changes and vibrations, and even slight deviations in the positional relationship during long-term use. -Furthermore, since the characteristics of the coupling efficiency depend on the performance of the lens 102, the characteristics of the entire finished product deteriorate due to variations in the characteristic values of the lens 102. For the above reasons, mass production is difficult and is an obstacle to cost reduction.
「問題点を解決するための手段」
そこで、本発明は光学的位置合わせを１箇所にし、また
、完成品全体の特性を左右するレンズの使用をやめ、温
度変化、振動などの環境条件および長期使用に対して特
性の劣化をふせぎ、且つ量産可能な光伝送モジュール付
レセプタクルを提供しようとするものである。``Means for Solving the Problems'' Therefore, the present invention makes optical alignment at one location, eliminates the use of lenses that affect the characteristics of the entire finished product, and eliminates environmental conditions such as temperature changes and vibrations. The present invention aims to provide a receptacle with an optical transmission module that prevents deterioration of characteristics during use and can be mass-produced.
上記の如き不都合を解消するための手段として、中心部
に細孔をあけたフェルール内に光ファイバを挿通し、光
ファイバをフェルール端面より露出させ、フェルール細
孔部で該光ファイバを固定する。また、フェルールの一
端より露出する光ファイバを先球加工し、他端のフェル
ールは光ファイバと共に研磨し、ステム上にマウントさ
れた受光または発光素子にフェルールの先球形状の光フ
ァイバを対向させて受光または発光素子を覆うキャップ
に取付けたものである。As a means to solve the above-mentioned disadvantages, an optical fiber is inserted into a ferrule having a pore in the center, the optical fiber is exposed from the end face of the ferrule, and the optical fiber is fixed at the ferrule's pore. In addition, the optical fiber exposed from one end of the ferrule is processed to have a spherical tip, and the other end of the ferrule is polished together with the optical fiber, and the spherical tip of the ferrule is made to face the light-receiving or light-emitting element mounted on the stem. It is attached to a cap that covers the light receiving or light emitting element.
「実施例」
本発明を第１図に示す具体的な実施例に基いて詳細に示
す。"Example" The present invention will be described in detail based on a specific example shown in FIG.
アルミナセラミックからなる外径２．４９９ ±０・０
０１鶴のフェルール１の中心軸部の細孔２にコア径１０
μｍ１クラツド１２５μｍのシングルモードの光ファイ
バ３を挿通しフェルール１両端面より光ファイバ３をそ
れぞれ露出させる。フェルール１外径と細孔２の同心度
は１μｍとした。このフェルール１の一端は光ファイバ
３と共に３０’のテーパ加工を行い光フアイバ３先端を
先球加工し先球半径１０μｎ〜１２μｍに形成し、テー
パ付近のフェルール１外周はメタライズ処理を行う。Made of alumina ceramic, outer diameter 2.499 ±0.0
01 Tsuru's ferrule 1 has a core diameter of 10 in the pore 2 of the central shaft.
A single mode optical fiber 3 with a cladding of 1 μm and 125 μm is inserted to expose the optical fiber 3 from both end faces of the ferrule 1. The concentricity between the outer diameter of the ferrule 1 and the pore 2 was 1 μm. One end of the ferrule 1 is processed into a 30' taper along with the optical fiber 3, and the tip of the optical fiber 3 is processed to have a tip radius of 10 to 12 μm, and the outer periphery of the ferrule 1 near the taper is metallized.
光伝送モジュールはステム６上に受発光素子７がマウン
トされ、先端に案内筒８を有するキャップ９で受発光素
子７を覆い、キャンプ９とステム６とを抵抗溶接により
固着する。In the optical transmission module, a light receiving/emitting element 7 is mounted on a stem 6, the light receiving/emitting element 7 is covered with a cap 9 having a guide tube 8 at the tip, and the cap 9 and the stem 6 are fixed by resistance welding.
前記フェルール１の先球加工した端部を光伝送モジュー
ルの案内筒８に嵌め、位置合わせの後フェルール１とキ
ャップ９とをＰｂ／Ｓｎ共晶半田により半田付けを行い
固着封止する。The tip end of the ferrule 1 is fitted into the guide tube 8 of the optical transmission module, and after alignment, the ferrule 1 and the cap 9 are soldered using Pb/Sn eutectic solder to firmly seal them.
キャンプ９から突出した前記フェルール１に、全長にわ
たり割り溝を設は径方向に拡開して弾性的に保持するジ
ルコニア製の割スリーブ１１を外嵌めし、ステンレス製
ハウジング１２に割スリーブ１１、フェルール１、光伝
送モジュールを収容し、ネジリング１３を螺着して固定
する。A split groove is provided over the entire length of the ferrule 1 protruding from the camp 9, and a split sleeve 11 made of zirconia that expands in the radial direction and is held elastically is fitted onto the outside of the ferrule 1, and the split sleeve 11 and the ferrule are fitted into the stainless steel housing 12. 1. The optical transmission module is accommodated and fixed by screwing the screw ring 13.
連結する光ファイバをそのフェルールを図示状態で上方
より割スリーブ１１に挿入して下方に位置するフェルー
ル１の光ファイバ３と当接させネジ１４に螺締して連結
する。The optical fibers to be connected are inserted into the split sleeve 11 from above with their ferrules in the illustrated state, brought into contact with the optical fibers 3 of the ferrule 1 located below, and then screwed into the screws 14 to connect them.
ここで使用した発光素子７のレーザーダイオード（Ｌ
Ｄ）の発振波長は１．３μｍとした。The laser diode (L) of the light emitting element 7 used here
The oscillation wavelength of D) was 1.3 μm.
「発明の効果」
上記の本発明によると、レーザーダイオード（ＬＤ）よ
り発光する全光量の３５％以上を光コネクタ側に伝送で
き、１００℃２４時間加熱後常温にもどして測定した場
合の光量は加熱前の光量に対する変化量は１ｄＢ以下で
あり、従来の光伝送モジュ−ル付レセプタクルの特性と
比較して結合効率でおよそ２倍、温度変化による変動は
ほぼ同等の特性が得られた。また従来の光伝送モジュー
ルイ］レセプタタルは２個を基準にして光学的位置合わ
せが必要であったが、本発明は１個所で良く、位置合わ
せの自動化が容易であり量産化が可能である。"Effects of the Invention" According to the invention described above, more than 35% of the total amount of light emitted from the laser diode (LD) can be transmitted to the optical connector side, and the amount of light measured after heating at 100°C for 24 hours and returning to room temperature is The amount of change with respect to the amount of light before heating was less than 1 dB, and compared to the characteristics of a conventional receptacle with an optical transmission module, the coupling efficiency was approximately twice as high, and the fluctuation due to temperature change was approximately the same. In addition, while conventional optical transmission modules (i) receptors require optical positioning for two units, the present invention requires only one position, and alignment can be easily automated and mass-produced.
第１図は本発明の具体的な一実施例の光伝送モジュール
付レセプタクルの縦断面図、第２図は従来例の光伝送モ
ジュール付レセプタタルの縦断面図である。
７・・・受光または発光素子
６・・・ス テ ム
９・・・キャップ
３・・・光ファイバ
ト・・フェルールFIG. 1 is a longitudinal sectional view of a receptacle with an optical transmission module according to a specific embodiment of the present invention, and FIG. 2 is a longitudinal sectional view of a conventional receptacle with an optical transmission module. 7... Light receiving or light emitting element 6... Stem 9... Cap 3... Optical fiber... Ferrule
Claims (1)
キャップに、光ファイバを軸方向に収容したフェルール
の光ファイバを受光または発光素子と対向させて取付け
、前記フェルールの受光または発光素子と対向する端部
を先球形状に形成し他端を光ファイバと共に研磨してあ
る光伝送モジュール付レセプタクル(1) Attach the optical fiber of a ferrule containing the optical fiber in the axial direction to a cap covering the stem on which the light receiving or light emitting element is mounted, facing the light receiving or light emitting element, and attaching the end of the ferrule facing the light receiving or light emitting element. A receptacle with an optical transmission module that has one end shaped into a spherical shape and the other end polished together with the optical fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63248751A JPH0296104A (en) | 1988-09-30 | 1988-09-30 | Receptacle with light transmission module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63248751A JPH0296104A (en) | 1988-09-30 | 1988-09-30 | Receptacle with light transmission module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0296104A true JPH0296104A (en) | 1990-04-06 |
Family
ID=17182830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63248751A Pending JPH0296104A (en) | 1988-09-30 | 1988-09-30 | Receptacle with light transmission module |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0296104A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52123248A (en) * | 1976-04-07 | 1977-10-17 | Fujitsu Ltd | Processor for optical fiber |
| JPS6022326U (en) * | 1983-07-20 | 1985-02-15 | 日本石油化学株式会社 | Automotive interior materials |
| JPS61295518A (en) * | 1985-06-24 | 1986-12-26 | Sumitomo Electric Ind Ltd | Electrooptic converter |
-
1988
- 1988-09-30 JP JP63248751A patent/JPH0296104A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52123248A (en) * | 1976-04-07 | 1977-10-17 | Fujitsu Ltd | Processor for optical fiber |
| JPS6022326U (en) * | 1983-07-20 | 1985-02-15 | 日本石油化学株式会社 | Automotive interior materials |
| JPS61295518A (en) * | 1985-06-24 | 1986-12-26 | Sumitomo Electric Ind Ltd | Electrooptic converter |
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