JPH04177303A - Light receiving module - Google Patents
Light receiving moduleInfo
- Publication number
- JPH04177303A JPH04177303A JP30657690A JP30657690A JPH04177303A JP H04177303 A JPH04177303 A JP H04177303A JP 30657690 A JP30657690 A JP 30657690A JP 30657690 A JP30657690 A JP 30657690A JP H04177303 A JPH04177303 A JP H04177303A
- Authority
- JP
- Japan
- Prior art keywords
- optical
- holder
- receptacle
- light receiving
- receiving 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
- 230000003287 optical effect Effects 0.000 claims abstract description 49
- 239000004065 semiconductor Substances 0.000 claims abstract description 16
- 239000013307 optical fiber Substances 0.000 claims abstract description 10
- 238000003466 welding Methods 0.000 abstract description 15
- 230000008878 coupling Effects 0.000 abstract description 9
- 238000010168 coupling process Methods 0.000 abstract description 9
- 238000005859 coupling reaction Methods 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 abstract 1
- 239000008188 pellet Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
Landscapes
- Optical Couplings Of Light Guides (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は受光モジュールに関し、′特にレセプタクルと
受光用光半導体装置との位置調整の容易なレセプタクル
型受光モジュールに関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a light receiving module, and particularly to a receptacle type light receiving module in which the position of a receptacle and a light receiving optical semiconductor device can be easily adjusted.
従来のレセプタクル型受光モジュールを第５図、第６図
を用いて説明する。A conventional receptacle type light receiving module will be explained using FIGS. 5 and 6.
第５図は従来構造のレセプタクル型受光モジュールの断
面図である。FIG. 5 is a sectional view of a receptacle-type light receiving module having a conventional structure.
第５図において、レンズホルダ８は、固定されたＧＲＩ
Ｎレンズ９を有し、かつ受光ペレット１１を設けた受光
用光半導体装置１０かＹ Ａ Ｇレーザ溶接により所定
の孔に固定された構造になっている。In FIG. 5, the lens holder 8 has a fixed GRI
It has a structure in which a light receiving optical semiconductor device 10 having an N lens 9 and provided with a light receiving pellet 11 is fixed in a predetermined hole by YAG laser welding.
また、レセプタクル３は、光コネクタと係合可能ナフロ
ントシェル１にフェルールホルダ２を圧入し、カバー４
て田われた構造になっている。In addition, the receptacle 3 is constructed by press-fitting the ferrule holder 2 into the front shell 1 that can be engaged with the optical connector, and then press-fitting the ferrule holder 2 into the cover 4
It has a tiled structure.
このレセプタクル型受光モジュールの組立工程は、第６
図に示すように、最初にレセプタクル３に、レーザ光を
入射する光ファイバ１３か結合されたマスター光コネク
タ１２を係合し、光ファイバ１３には例えば０．３ｍＷ
のレーザ光を入射する。レンズホルダ８内の半導体装置
１０には、バイアス５■を印加して、光電流をモニター
する。The assembly process of this receptacle type light receiving module is the sixth step.
As shown in the figure, the receptacle 3 is first engaged with the master optical connector 12 connected to the optical fiber 13 into which the laser beam is incident, and the optical fiber 13 has a power of, for example, 0.3 mW.
Inject the laser beam. A bias 5■ is applied to the semiconductor device 10 in the lens holder 8, and the photocurrent is monitored.
次に、ｘ、ｙ、ｚの３方向にミクロン（μｍ）オーダで
微調整可能な台に固定された、レンズホルダ保持部１４
により、レンズホルダ８を固定する。そして、レセプタ
クル３に係合されたマスター光フ不りタ１２からのレー
ザ光との光結合効率か最大となる位置にレンズホルダ８
を調整し、ＹＡＧレーザ溶接により、スライドリング５
とレンズホルダ８をＹＡＧレーザ溶接ポイント（Ａ）７
の位置で固定する。通常、ＹＡＧ溶接固定前後では、数
μｍ程度ずれてしまう。したがって、再度、Ｘ、Ｖ方向
の光軸調整を行った後、ＹＡＧレーザ溶接ポイント（Ｂ
）６の位置で、スライドリング５とフェルールホルダ２
を固定する。Next, the lens holder holder 14 is fixed to a table that can be finely adjusted in the order of microns (μm) in three directions: x, y, and z.
This fixes the lens holder 8. Then, the lens holder 8 is placed at a position where the optical coupling efficiency with the laser beam from the master optical filter 12 engaged with the receptacle 3 is maximized.
Adjust the slide ring 5 by YAG laser welding.
and lens holder 8 at YAG laser welding point (A) 7
Fix it in position. Normally, there is a difference of several μm before and after fixing YAG by welding. Therefore, after adjusting the optical axis in the X and V directions again, the YAG laser welding point (B
) At position 6, slide ring 5 and ferrule holder 2.
to be fixed.
光軸調整の際には、当然スライドリング５は、レンズホ
ルダ８およびレセプタクル内のフェルールホルダ２とは
互いに面を接触し、摺り合わせなから行う。When adjusting the optical axis, the slide ring 5 naturally contacts the surfaces of the lens holder 8 and the ferrule holder 2 in the receptacle without sliding them together.
前述した従来のレセプタクル型受光モジュールでは、受
光用光半導体装置１０およびＧＲＩＮレンズ９を有する
レンズホルダ８と、マスター光コネクタ１２と係合済の
レセプタクル３との光軸調整および過程をスライドリン
グ５を介して行っている。そのため、ＹＡＧレーザ溶接
前後の位置変動は約±２μｍ以内と精度良く固定できる
が、２回にわたって行う必要があり、組立工数か多くな
ってしまう。また、部品数も多くなり、製造コストを上
げている。In the conventional receptacle-type light-receiving module described above, the slide ring 5 is used to adjust the optical axis of the lens holder 8 having the light-receiving optical semiconductor device 10 and the GRIN lens 9, and the receptacle 3 that is already engaged with the master optical connector 12. It is done through. Therefore, although the positional variation before and after YAG laser welding can be fixed accurately within about ±2 μm, it is necessary to perform the welding twice, which increases the number of assembly steps. Additionally, the number of parts increases, increasing manufacturing costs.
本発明の目的は、前記欠点を解決し、１回の位置調整で
済み、安価に製造できるようにした受光モジュールを提
供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a light receiving module that solves the above-mentioned drawbacks, requires only one position adjustment, and can be manufactured at low cost.
本発明の構成は、受光用光半導体装置と、光ファイバと
光結合させる集光用レンズと、前記光ファイバとコネク
タにより係合可能なレセプタクルとを備えた受光モジュ
ールにおいて、前記光半導体装置のステム又は前記集光
用レンズのホルダが、光軸方向に対して垂直であり、か
つ前記レセプタクルを摺り合わせて位置調整する平面を
有していることを特徴とする。The structure of the present invention provides a light receiving module including a light receiving optical semiconductor device, a condensing lens optically coupled to an optical fiber, and a receptacle that can be engaged with the optical fiber by a connector. Alternatively, the holder of the condensing lens has a plane that is perpendicular to the optical axis direction and that adjusts the position by sliding the receptacle.
次に本発明について図面を参照して説明する。 Next, the present invention will be explained with reference to the drawings.
第１図は本発明の第１の実施例の受光モジュールを示す
断面図、第２図は第１図の組立杖態を示す斜視図である
。FIG. 1 is a cross-sectional view showing a light receiving module according to a first embodiment of the present invention, and FIG. 2 is a perspective view showing the assembled structure of FIG. 1.
第１図、第２図において、本実施例は、レンズホルダ８
′の所定の孔に、ＧＲＩＮレンズ９をＡｕＳｎ半田によ
って固定し、また受光ペレット１１を有する受光用光半
導体装置１０をＧＲＩＮレンズ９に対向するように、Ｙ
ＡＧレーザ溶接により固定する。In FIG. 1 and FIG. 2, this embodiment has a lens holder 8.
The GRIN lens 9 is fixed to a predetermined hole in the Y with AuSn solder, and the light-receiving optical semiconductor device 10 having the light-receiving pellet 11 is placed so as to face the GRIN lens 9.
Fix by AG laser welding.
また、光コネクタと係合可能なフロントシェル１にフェ
ルールホルダ２を圧入して、レセプタクル３を組立てる
。Further, the receptacle 3 is assembled by press-fitting the ferrule holder 2 into the front shell 1 which can be engaged with the optical connector.
レンズホルダ８′とレセプタクル３との固定について以
下に説明する。Fixing of the lens holder 8' and the receptacle 3 will be explained below.
ます、第２図に示すように、レセプタクル３にマスター
光コネクタ１２を係合し、光ファイバ１３には、例えば
０．３ｍＷのレーザ光を入射する。First, as shown in FIG. 2, the master optical connector 12 is engaged with the receptacle 3, and a laser beam of, for example, 0.3 mW is input into the optical fiber 13.
次に、Ｘｒ Ｖ、２の３方向にミクロン（μｍ）オーダ
で微調整可能な台に固定されたレンズホルダ保持部１４
により、レンズホルダ８′を固定する。Next, the lens holder holder 14 is fixed to a table that can be finely adjusted in the order of microns (μm) in three directions: XrV, 2.
This fixes the lens holder 8'.
このレンズホルダ８′は、光軸調整用リング５′を有し
ており、前記光軸調整用リング５′の下面とホルダ２の
上面を密着させたときに、Ｚ軸方向に関して、光ファイ
バ１３との光結合効率が最大の位置になるように距離か
決められている。This lens holder 8' has an optical axis adjustment ring 5', and when the lower surface of the optical axis adjustment ring 5' and the upper surface of the holder 2 are brought into close contact, the optical fiber 13 The distance is determined so that the optical coupling efficiency with the
従って、まず最初に光軸調整用リング５′のホルダ２の
面を互いに密着した後、受光用光半導体装置１０の光電
流をモニタしなから、ＸＩ ｙ方向に微調整し、光結
合効率が最大となる位置におく。その後、ＹＡＧレーザ
溶接をポイン） （Ｂ）６′で唯１回するだけで、レン
ズホルダ８′とレセプタクル３のホルダ２が固定される
。最後に、受光用光半導体装置１０を保護するカバー４
を所定の位置にＹＡＧレーザ溶接で固定する。Therefore, first, after the surfaces of the holder 2 of the optical axis adjustment ring 5' are brought into close contact with each other, the photocurrent of the light receiving optical semiconductor device 10 is monitored and then finely adjusted in the XI and y directions to improve the optical coupling efficiency. Place it in the maximum position. After that, YAG laser welding is performed (B) 6' only once to fix the lens holder 8' and the holder 2 of the receptacle 3. Finally, a cover 4 that protects the light-receiving optical semiconductor device 10
is fixed in place by YAG laser welding.
例えば、受光径８０μｍの受光用光半導体装置１０をＧ
ＲＩＮレンズ９を用いて、コア径５０μｍのマルチモー
ドファイバと結合した場合、第３図（ａ）、第３図（ｂ
）に示すように、トレランスはＸ方向で±３０μｍｌ
ｚ方向で±２００μｍある。For example, the light receiving optical semiconductor device 10 with a light receiving diameter of 80 μm is
When coupled to a multimode fiber with a core diameter of 50 μm using the RIN lens 9, the results are shown in Fig. 3(a) and Fig. 3(b).
), the tolerance is ±30 μml in the X direction.
It is ±200 μm in the z direction.
同図より明らかなように、Ｚ方向に関しては過剰な設計
になっている。そのため、本発明の実施例のように、光
結合効率か最大の位置になるときの２軸方向の距離を、
レンズホルダ８′の光軸調整用リング５′により規定し
ても、量子効率は従来構造のレセプタクル型受光モジュ
ールと同程度で、約９０％の値が得られる。As is clear from the figure, the design is excessive in the Z direction. Therefore, as in the embodiment of the present invention, the distance in the two axis directions when the optical coupling efficiency is maximized is
Even when defined by the optical axis adjustment ring 5' of the lens holder 8', the quantum efficiency is comparable to that of a receptacle-type light receiving module having a conventional structure, and a value of about 90% can be obtained.
第４図は本発明の第２の実施例を部分的に示す断面図で
ある。FIG. 4 is a sectional view partially showing a second embodiment of the invention.
第４図において、本実施例は、レセプタクル３が第１の
実施例と同様であるか、受光用光半導体装置１０’が集
光用レンズとしてマイクロレンズ１６を有したキャップ
を持つ。また、レンズホルダ８′がない。受光ペレット
１１．ステム１７は、第１の実施例と同様な位置に設け
られる。In FIG. 4, in this embodiment, either the receptacle 3 is the same as in the first embodiment, or the light receiving optical semiconductor device 10' has a cap having a microlens 16 as a condensing lens. Furthermore, there is no lens holder 8'. Light receiving pellet 11. The stem 17 is provided at the same position as in the first embodiment.
本箱２の実施例においては、フェルールホルダ２の面と
、受光用光半導体装置１０′のステム１７の面を密着さ
せ、互いに摺り合わせて光軸調整を行っている。In the embodiment of the bookcase 2, the surface of the ferrule holder 2 and the surface of the stem 17 of the light-receiving optical semiconductor device 10' are brought into close contact and rubbed against each other to adjust the optical axis.
本実施例の場合も、ＹＡＧ溶接固定は唯１回でよく、ま
た部品点数が少ないために、容易で安価なレセプタクル
型受光モジュールを作ることかできる。In the case of this embodiment as well, the YAG is welded and fixed only once, and since the number of parts is small, a receptacle type light receiving module can be manufactured easily and inexpensively.
以上説明したように、本発明では、光コネクタと係合可
能なレセプタクルと、受光用光半導体装置および集光用
レンズから成る系との固定において、光結合効率が最大
となる位置の２軸方向（即ち光軸方向）の距離が、あら
かじめ決まっているから、従って、この光軸調整用の面
とレセプタクルの該当する面を摺り合わせて、Ｘ、ｙ′
ｙ５向の位置調整を行うのみで、ＹＡＧレーサ溶接によ
り同定すればよく、光結合効率の低下をまねくことかな
く、かつ組立工数を少なくすることかでき、容易に安価
なレセプタクル型受光モジュールを作ることができる。As explained above, in the present invention, in fixing a receptacle that can be engaged with an optical connector and a system consisting of a light-receiving optical semiconductor device and a condensing lens, the optical coupling efficiency is maximized in two axial directions. Since the distance in the optical axis direction (that is, in the optical axis direction) is predetermined, therefore, by sliding this optical axis adjustment surface and the corresponding surface of the receptacle,
Just by adjusting the position in the y5 direction and identifying by YAG laser welding, it is possible to easily create an inexpensive receptacle-type light receiving module without reducing the optical coupling efficiency and reducing the number of assembly steps. be able to.
第１図は本発明の第１の実施例の受光モジュールを示す
断面図、第２図は第１図の実施例の組立状態を示す斜視
図、第３図（ａ）、第３図（ｂ）は第１図の実施例の光
特性を示す特性図、第４図は本発明の第２の実施例の受
光モジュールを示す断面図、第５図は従来の受光モジュ
ールの一例を示す断面図、第６図は第５図の受光モジュ
ールの組立状態を示す斜視図である。
１・・・フロントシェル、２・・・フェルールホルダ、
３・・・レセプタクル、４・・・カバー、５・・・スラ
イドリング、５′・・・光軸調整用リング、６・・・Ｙ
ＡＧ溶接ポイント（Ｂ）、７・・・ＹＡＧ溶接ポイント
（Ａ）、８・・・レンズホルダ、９・・・ＧＲＩＮレン
ズ、１０・・・受光用光半導体装置、１１・・・受光ペ
レット、１２・・・マスター光コネクタ、１３・・・光
ファイバ、１４・・・レンズホルダ保持部、１５・・・
ソケット、１６・・・マイクロレンズ、１７・・・ステ
ム。1 is a sectional view showing a light receiving module according to a first embodiment of the present invention, FIG. 2 is a perspective view showing an assembled state of the embodiment of FIG. 1, and FIGS. 3(a) and 3(b). ) is a characteristic diagram showing the optical characteristics of the embodiment shown in FIG. 1, FIG. 4 is a sectional view showing a light receiving module according to the second embodiment of the present invention, and FIG. 5 is a sectional view showing an example of a conventional light receiving module. , FIG. 6 is a perspective view showing the assembled state of the light receiving module of FIG. 5. 1...Front shell, 2...Ferrule holder,
3... Receptacle, 4... Cover, 5... Slide ring, 5'... Optical axis adjustment ring, 6... Y
AG welding point (B), 7... YAG welding point (A), 8... Lens holder, 9... GRIN lens, 10... Optical semiconductor device for light reception, 11... Light receiving pellet, 12 ... Master optical connector, 13... Optical fiber, 14... Lens holder holding part, 15...
Socket, 16... Microlens, 17... Stem.
Claims (1)
用レンズと、前記光ファイバとコネクタにより係合可能
なレセプタクルとを備えた受光モジュールにおいて、前
記光半導体装置のステム又は前記集光用レンズのホルダ
が、光軸方向に対して垂直であり、かつ前記レセプタク
ルを摺り合わせて位置調整する平面を有していることを
特徴とする受光モジュール。A light-receiving module comprising a light-receiving optical semiconductor device, a condensing lens optically coupled to an optical fiber, and a receptacle that can be engaged with the optical fiber by a connector, wherein the stem of the optical semiconductor device or the condensing lens A light receiving module characterized in that the holder has a plane that is perpendicular to the optical axis direction and that adjusts the position by sliding the receptacle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30657690A JPH04177303A (en) | 1990-11-13 | 1990-11-13 | Light receiving module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30657690A JPH04177303A (en) | 1990-11-13 | 1990-11-13 | Light receiving module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04177303A true JPH04177303A (en) | 1992-06-24 |
Family
ID=17958725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30657690A Pending JPH04177303A (en) | 1990-11-13 | 1990-11-13 | Light receiving module |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04177303A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0763948A (en) * | 1993-08-25 | 1995-03-10 | Rohm Co Ltd | Optical fiber receptacle and its production |
| JP2012027320A (en) * | 2010-07-26 | 2012-02-09 | Enplas Corp | Optical fiber connector |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6452103A (en) * | 1987-05-11 | 1989-02-28 | Hitachi Ltd | Laser diode coupling device and production thereof |
| JPH0279478A (en) * | 1988-09-14 | 1990-03-20 | Fujitsu Ltd | Manufacture of photo-semiconductor module |
-
1990
- 1990-11-13 JP JP30657690A patent/JPH04177303A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6452103A (en) * | 1987-05-11 | 1989-02-28 | Hitachi Ltd | Laser diode coupling device and production thereof |
| JPH0279478A (en) * | 1988-09-14 | 1990-03-20 | Fujitsu Ltd | Manufacture of photo-semiconductor module |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0763948A (en) * | 1993-08-25 | 1995-03-10 | Rohm Co Ltd | Optical fiber receptacle and its production |
| JP2012027320A (en) * | 2010-07-26 | 2012-02-09 | Enplas Corp | Optical fiber connector |
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