JPH08101328A - Ld module - Google Patents
Ld moduleInfo
- Publication number
- JPH08101328A JPH08101328A JP23902094A JP23902094A JPH08101328A JP H08101328 A JPH08101328 A JP H08101328A JP 23902094 A JP23902094 A JP 23902094A JP 23902094 A JP23902094 A JP 23902094A JP H08101328 A JPH08101328 A JP H08101328A
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- optical fibers
- light emitting
- substrate
- holding member
- 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.)
- Granted
Links
Landscapes
- Optical Couplings Of Light Guides (AREA)
- Semiconductor Lasers (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、例えば、光ファイバ通
信システムの中継装置等の送信側に用いられる発光素子
たるＬＤ（Laser Diode)アレイと光ファイバとを結合す
るＬＤモジュールに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an LD module for coupling an optical fiber with an LD (Laser Diode) array which is a light emitting element used on the transmission side of a repeater or the like of an optical fiber communication system.
【０００２】[0002]
【従来の技術】従来のＬＤモジュールは、例えば、図６
に示すように、複数の発光面を有するＬＤアレイ６が固
定されるＬＤアレイ用基板９３と、光ファイバケーブル
７を構成している複数本の光ファイバ心線７ｂを固定す
るＶ溝９５ａが形成された光ファイバ用基板９５と、Ｌ
Ｄアレイ用基板９３及び光ファイバ用基板９５が搭載さ
れるガイド基板９６とを有し、ガイド基板９６にはガイ
ド溝９６ｂが形成され、ＬＤアレイ用基板９３及び光フ
ァイバ用基板９５にもそれぞれガイド基板９６のガイド
溝９６ｂに係合するガイド溝９３ｂ，９５ｂが形成され
ている。2. Description of the Related Art A conventional LD module is shown in FIG.
As shown in FIG. 5, an LD array substrate 93 to which the LD array 6 having a plurality of light emitting surfaces is fixed, and a V groove 95a for fixing a plurality of optical fiber core wires 7b forming the optical fiber cable 7 are formed. Optical fiber substrate 95, L
A guide substrate 96 on which the D array substrate 93 and the optical fiber substrate 95 are mounted, and the guide groove 96b is formed in the guide substrate 96 to guide the LD array substrate 93 and the optical fiber substrate 95 respectively. Guide grooves 93b and 95b that engage with the guide groove 96b of the substrate 96 are formed.
【０００３】そして、従来のＬＤモジュールにおけるＬ
Ｄアレイ６と光ファイバとの結合は、ガイド基板９６上
のガイド溝９６ｂにＬＤアレイ用基板９３及び光ファイ
バ用基板９５のガイド溝９３ｂ，９５ｂを係合させてＬ
Ｄアレイ６と光ファイバの位置合わせをして、両者を結
合するように成っていた。Then, L in the conventional LD module
The D array 6 and the optical fiber are coupled to each other by engaging the guide groove 96b on the guide substrate 96 with the guide grooves 93b and 95b of the LD array substrate 93 and the optical fiber substrate 95, respectively.
The D array 6 and the optical fiber are aligned with each other so that they are coupled together.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上述の
従来技術においては、ＬＤアレイ６の各発光面と各光フ
ァイバの先端面とを結合するために、ガイド基板９６上
でＬＤアレイ用基板９３と光ファイバ用基板９５とを別
々に位置合わせするように成っており、このため、各発
光面と各光ファイバとの間で高精度に軸合せをすること
が困難であり、この結果、各光ファイバにおける結合効
率のバラツキが生じ、問題となっていた。However, in the above-mentioned conventional technique, the LD array substrate 93 and the LD array substrate 93 are formed on the guide substrate 96 in order to connect the light emitting surfaces of the LD array 6 and the tip surfaces of the optical fibers. The optical fiber substrate 95 and the optical fiber substrate 95 are separately aligned. Therefore, it is difficult to perform axis alignment between each light emitting surface and each optical fiber with high accuracy. This has been a problem because the coupling efficiency of the fibers varies.
【０００５】それ故に、本発明の課題は、各光ファイバ
をそれぞれＬＤアレイの各発光面に対して高精度に軸合
わせでき、結合効率のバラツキの少ないＬＤモジュール
を提供することにある。Therefore, it is an object of the present invention to provide an LD module in which each optical fiber can be accurately aligned with each light emitting surface of the LD array with little variation in coupling efficiency.
【０００６】[0006]
【課題を解決するための手段】本発明によれば、複数の
発光面を有するＬＤアレイを所定位置に保持すると共
に、前記複数の発光面の各々に対応させて形成された第
１のＶ溝、及び該第１のＶ溝に連続して形成された第２
のＶ溝を有する結合用基板と、該結合用基板を所定位置
に保持すると共に、複数の光ファイバをそれぞれ前記第
１及び第２のＶ溝まで通すことが可能な基板保持部材
と、該基板保持部材に固定され、前記複数の光ファイバ
をそれぞれ前記第１及び第２のＶ溝に押し付ける押圧部
材と、前記複数の光ファイバを保持し、前記基板保持部
材と嵌脱自在に嵌合する光ファイバ保持部材とを有し、
前記各第１のＶ溝は、前記押圧部材によって押圧された
前記各光ファイバの先端部と係合して、前記発光面と直
交する方向での前記各光ファイバの位置決めをするもの
であり、前記各第２のＶ溝は、前記押圧部材によって押
圧された前記各光ファイバの外周面と係合して、前記発
光面と平行な方向での前記各光ファイバの位置決めをす
るものであることを特徴とするＬＤモジュールが得られ
る。According to the present invention, an LD array having a plurality of light emitting surfaces is held at a predetermined position, and a first V groove formed corresponding to each of the plurality of light emitting surfaces. , And a second continuous V-groove.
And a substrate holding member capable of holding the coupling substrate at a predetermined position and passing a plurality of optical fibers to the first and second V-grooves, respectively. A pressing member that is fixed to a holding member and presses the plurality of optical fibers against the first and second V-grooves, respectively, and a light that holds the plurality of optical fibers and is removably fitted to the substrate holding member. And a fiber holding member,
Each of the first V grooves engages with a tip end portion of each of the optical fibers pressed by the pressing member, and positions each of the optical fibers in a direction orthogonal to the light emitting surface, Each of the second V grooves engages with the outer peripheral surface of each of the optical fibers pressed by the pressing member to position each of the optical fibers in a direction parallel to the light emitting surface. An LD module is obtained.
【０００７】[0007]
【作用】本発明のＬＤモジュールの場合、一枚の結合用
基板上でＬＤアレイの各発光面に対する各光ファイバの
位置合わせが正確に行われるので、各光ファイバにおけ
る結合効率のばらつきが少ない。具体的に言うと、第１
のＶ溝によりＬＤアレイの発光面と直交する方向におけ
る光ファイバの位置決めが正確に行われ、これにより光
ファイバ先端面からＬＤアレイの発光面までの距離が正
確に決まり、また、第２のＶ溝によりＬＤアレイの発光
面と平行な方向での光ファイバの位置決めが正確に行わ
れ、これにより、光ファイバの長手方向と平行で且つ光
ファイバの中心を通る線分がＬＤアレイの発光面の発光
中心点を通るようになる。以上の結果、光ファイバは正
確に位置決めされる。In the case of the LD module of the present invention, since the respective optical fibers are accurately aligned with the respective light emitting surfaces of the LD array on one coupling substrate, there is little variation in the coupling efficiency among the respective optical fibers. Specifically, the first
The V groove accurately positions the optical fiber in the direction orthogonal to the light emitting surface of the LD array, and thereby accurately determines the distance from the end surface of the optical fiber to the light emitting surface of the LD array. The groove accurately positions the optical fiber in a direction parallel to the light emitting surface of the LD array, whereby a line segment parallel to the longitudinal direction of the optical fiber and passing through the center of the optical fiber is the light emitting surface of the LD array. It comes to pass through the emission center point. As a result, the optical fiber is accurately positioned.
【０００８】[0008]
【実施例】図１は本発明の一実施例によるＬＤモジュー
ルの結合状態を示す水平断面図であり、図２は図１に示
すＬＤモジュールの縦断面図、図３は図１に示すＬＤモ
ジュールの結合前の状態を示す斜視図、図４は図１に示
すＬＤモジュールの要部の拡大水平断面図、図５は図２
に示すＬＤモジュールの要部の拡大縦断面図である。1 is a horizontal sectional view showing a coupled state of an LD module according to an embodiment of the present invention, FIG. 2 is a vertical sectional view of the LD module shown in FIG. 1, and FIG. 3 is an LD module shown in FIG. 2 is a perspective view showing a state before coupling, FIG. 4 is an enlarged horizontal sectional view of an essential part of the LD module shown in FIG. 1, and FIG.
FIG. 3 is an enlarged vertical sectional view of a main part of the LD module shown in FIG.
【０００９】図１乃至図５を参照して、本実施例のＬＤ
モジュール１は、結合用基板２と、基板保持部材３と、
押圧部材４と、光ファイバ保持部材５とを有している。Referring to FIGS. 1 to 5, the LD of this embodiment
The module 1 includes a coupling substrate 2, a substrate holding member 3,
It has a pressing member 4 and an optical fiber holding member 5.
【００１０】結合用基板２は、複数の発光面６０を有す
るＬＤアレイ６を所定位置に保持すると共に、複数の発
光面６０の各々に対応させて形成された複数の第１のＶ
溝２０、及びこれら第１のＶ溝２０にそれぞれ連続して
形成された複数の第２のＶ溝２１を有している。The coupling substrate 2 holds the LD array 6 having a plurality of light emitting surfaces 60 at a predetermined position, and a plurality of first Vs formed corresponding to each of the plurality of light emitting surfaces 60.
The groove 20 and a plurality of second V-grooves 21 that are respectively formed continuously with the first V-grooves 20 are provided.
【００１１】基板保持部材３は、結合用基板２を所定位
置に保持すると共に、光ファイバケーブル７の複数の光
ファイバ素線７ａを、それぞれ、基板保持部材３内に保
持された結合用基板２の第１及び第２のＶ溝２０，２１
まで通すことが可能に成っている。この基板保持部材３
は、貫通孔３０を有する筒部３１、この筒部３１の一端
に形成された蓋部３２、及び蓋部３２に設けられたフッ
ク部３３を備えている。そして、上述の貫通孔３０によ
って複数の光ファイバ素線７ａをそれぞれ結合用基板２
の第１及び第２のＶ溝２０，２１まで通すことが可能に
成っている。The substrate holding member 3 holds the coupling substrate 2 at a predetermined position and also holds the plurality of optical fiber wires 7a of the optical fiber cable 7 in the substrate holding member 3, respectively. First and second V-grooves 20, 21 of
It is possible to pass up to. This substrate holding member 3
Includes a tubular portion 31 having a through hole 30, a lid portion 32 formed at one end of the tubular portion 31, and a hook portion 33 provided on the lid portion 32. Then, the plurality of optical fiber strands 7a are respectively connected to the coupling substrate 2 through the through holes 30 described above.
The first and second V-grooves 20 and 21 can be passed through.
【００１２】押圧部材４は、基板保持部材３内に固定さ
れ、複数の光ファイバ素線７ａをそれぞれ基板保持部材
３内に保持された結合用基板２の第１及び第２のＶ溝２
０，２１に押し付ける。The pressing member 4 is fixed in the substrate holding member 3, and the first and second V-grooves 2 of the coupling substrate 2 in which the plurality of optical fiber wires 7a are held in the substrate holding member 3, respectively.
Press on 0,21.
【００１３】光ファイバ保持部材５は、光ファイバケー
ブル７を構成する複数の光ファイバ心線７ｂを保持する
と共に、基板保持部材３と嵌脱自在に嵌合する。この光
ファイバ保持部材５は、略筒状を呈し、３つの部品５
０，５１，５２から成る。最も内側の部品５０は、複数
の光ファイバ心線７ｂを挿通させると共にこれを保持
し、部品５１は、部品５０を受け入れてこれを保持する
と共に、基板保持部材３の筒部３１を受け入れる形でこ
れと嵌合し、その外側面に係合突起５３を有し、この係
合突起５３と基板保持部材３のフック部３３とを係合さ
せることにより、基板保持部材３と光ファイバ保持部材
５との嵌合状態が保たれるように成っている。また、最
も外側の部品５２は、係合突起５３とフック部３３との
係合を外すためのロック解除用の部材である。The optical fiber holding member 5 holds a plurality of optical fiber core wires 7b constituting the optical fiber cable 7 and is removably fitted to the substrate holding member 3. The optical fiber holding member 5 has a substantially tubular shape and has three parts 5
It consists of 0, 51 and 52. The innermost part 50 has a plurality of optical fiber core wires 7b inserted and holds it, and the part 51 receives the part 50 and holds it, and also receives the tubular portion 31 of the substrate holding member 3. By engaging with this and having an engaging projection 53 on the outer surface thereof, and engaging the engaging projection 53 and the hook portion 33 of the substrate holding member 3, the substrate holding member 3 and the optical fiber holding member 5 It is designed to keep the mated state with. Further, the outermost part 52 is a member for releasing a lock for disengaging the engagement protrusion 53 and the hook portion 33 from each other.
【００１４】上述の各第１のＶ溝２０は、押圧部材４に
よって押圧された各光ファイバ素線７ａの先端部と係合
して、ＬＤアレイ６の発光面６０と直交する方向での各
光ファイバ素線７ａの位置決めをするように成ってい
る。即ち、光ファイバ素線７ａの先端部に形成されたテ
ーパー部は、押圧部材４によって第１のＶ溝２０に突き
当てられた状態で固定され、これにより、図４及び図５
から最も良く分るように、光ファイバ素線７ａの先端面
とＬＤアレイ６の発光面６０までの距離を正確にして、
発光面６０と直交する方向での光ファイバ素線７ａの位
置合わせをすることができる。従って、第１のＶ溝２０
の大きさや深さを光ファイバ素線７ａの先端部の形状に
合せて設計しておくことにより、ＬＤアレイ６の発光面
６０と直交する方向での各光ファイバ素線７ａの位置決
めを正確に行える。Each of the above-mentioned first V-shaped grooves 20 engages with the tip end portion of each optical fiber element wire 7a pressed by the pressing member 4, and is in each direction orthogonal to the light emitting surface 60 of the LD array 6. The optical fiber wire 7a is positioned. That is, the taper portion formed at the tip portion of the optical fiber element wire 7a is fixed in a state of being abutted against the first V groove 20 by the pressing member 4, and as a result, as shown in FIGS.
As is best understood from, the distance between the tip surface of the optical fiber element wire 7a and the light emitting surface 60 of the LD array 6 is made accurate,
The optical fiber element wire 7a can be aligned in the direction orthogonal to the light emitting surface 60. Therefore, the first V groove 20
By designing the size and depth of the optical fiber according to the shape of the tip of the optical fiber strand 7a, the optical fiber strands 7a can be accurately positioned in the direction orthogonal to the light emitting surface 60 of the LD array 6. You can do it.
【００１５】また、各第２のＶ溝２１は、押圧部材４に
よって押圧された各光ファイバ素線７ａの外周面と係合
して、ＬＤアレイ６の発光面６０と平行な方向での各光
ファイバ素線７ａの位置決めをするように成っている。
即ち、光ファイバ素線７ａが、押圧部材４によって第２
のＶ溝２１に押しつけられることにより、光ファイバ素
線７ａの長手方向と平行で且つ光ファイバのコアの中心
を通る線分がＬＤアレイ６の発光面６０の発光中心点を
通るようになり、この結果、ＬＤアレイ６の発光面６０
と平行な方向での光ファイバ素線７ａの位置決めが正確
に行われる。従って、第２のＶ溝２１の大きさや深さを
光ファイバ素線７ａの径寸法に合せて設計しておくこと
により、ＬＤアレイ６の発光面６０と平行な方向での各
光ファイバ素線７ａの位置決めを正確に行える。Further, each second V groove 21 engages with the outer peripheral surface of each optical fiber element wire 7a pressed by the pressing member 4 and is in a direction parallel to the light emitting surface 60 of the LD array 6. The optical fiber wire 7a is positioned.
That is, the optical fiber strand 7a is moved to the second position by the pressing member 4.
By being pressed against the V groove 21 of, the line segment that is parallel to the longitudinal direction of the optical fiber element wire 7a and passes through the center of the core of the optical fiber passes through the emission center point of the emission surface 60 of the LD array 6, As a result, the light emitting surface 60 of the LD array 6
The optical fiber element 7a is accurately positioned in a direction parallel to the. Therefore, by designing the size and depth of the second V-groove 21 in accordance with the diameter of the optical fiber strand 7a, each optical fiber strand in a direction parallel to the light emitting surface 60 of the LD array 6 is designed. The 7a can be accurately positioned.
【００１６】[0016]
【発明の効果】本発明のＬＤモジュールは、第１のＶ溝
によってＬＤアレイの発光面と直交する方向における光
ファイバの位置決めを正確に行うことができ、これによ
り光ファイバ先端面からＬＤアレイの発光面までの距離
が正確に決まり、また、第２のＶ溝によってＬＤアレイ
の発光面と平行な方向での光ファイバの位置決めを正確
に行うことができ、これにより、光ファイバの長手方向
と平行で且つ光ファイバの中心を通る線分がＬＤアレイ
の発光面の発光中心点を通るようになり、以上の結果、
各光ファイバをＬＤアレイの各発光面に対して正確に位
置決することができる。このように、一枚の結合用基板
上でＬＤアレイの各発光面に対する各光ファイバの位置
合わせを正確に行うことができるので、各光ファイバに
おける結合効率のばらつきを少なくすることができる。According to the LD module of the present invention, the optical fiber can be accurately positioned in the direction orthogonal to the light emitting surface of the LD array by the first V-shaped groove. The distance to the light emitting surface is accurately determined, and the second V groove can accurately position the optical fiber in the direction parallel to the light emitting surface of the LD array. A line segment that is parallel and passes through the center of the optical fiber passes through the light emission center point of the light emitting surface of the LD array. As a result,
Each optical fiber can be accurately positioned with respect to each light emitting surface of the LD array. As described above, since the alignment of each optical fiber with each light emitting surface of the LD array can be accurately performed on one coupling substrate, it is possible to reduce variation in coupling efficiency among the optical fibers.
【図１】本発明の一実施例によるＬＤモジュールの結合
状態を示す水平断面図である。FIG. 1 is a horizontal sectional view showing a coupled state of an LD module according to an embodiment of the present invention.
【図２】図１に示すＬＤモジュールの縦断面図である。FIG. 2 is a vertical sectional view of the LD module shown in FIG.
【図３】図１に示すＬＤモジュールの結合前の状態を示
す斜視図である。FIG. 3 is a perspective view showing a state of the LD module shown in FIG. 1 before being coupled.
【図４】図１に示すＬＤモジュールの要部の拡大水平断
面図である。FIG. 4 is an enlarged horizontal sectional view of a main part of the LD module shown in FIG.
【図５】図２に示すＬＤモジュールの要部の拡大縦断面
図である。5 is an enlarged vertical sectional view of a main part of the LD module shown in FIG.
【図６】従来のＬＤモジュールの一例の分解斜視図であ
る。FIG. 6 is an exploded perspective view of an example of a conventional LD module.
１ ＬＤモジュール ２ 結合基板 ３ 基板保持部材 ４ 押圧部材 ５ 光ファイバ保持部材 ６ ＬＤアレイ ７ 光ファイバケーブル ７ａ 光ファイバ素線 ７ｂ 光ファイバ心線 ２０ 第１のＶ溝 ２１ 第２のＶ溝 ６０ 発光面 1 LD Module 2 Bonded Substrate 3 Substrate Holding Member 4 Pressing Member 5 Optical Fiber Holding Member 6 LD Array 7 Optical Fiber Cable 7a Optical Fiber Element 7b Optical Fiber Core Wire 20 First V Groove 21 Second V Groove 60 Light Emitting Surface
Claims (1)
位置に保持すると共に、前記複数の発光面の各々に対応
させて形成された第１のＶ溝、及び該第１のＶ溝に連続
して形成された第２のＶ溝を有する結合用基板と、該結
合用基板を所定位置に保持すると共に、複数の光ファイ
バをそれぞれ前記第１及び第２のＶ溝まで通すことが可
能な基板保持部材と、該基板保持部材に固定され、前記
複数の光ファイバをそれぞれ前記第１及び第２のＶ溝に
押し付ける押圧部材と、前記複数の光ファイバを保持
し、前記基板保持部材と嵌脱自在に嵌合する光ファイバ
保持部材とを有し、前記各第１のＶ溝は、前記押圧部材
によって押圧された前記各光ファイバの先端部と係合し
て、前記発光面と直交する方向での前記各光ファイバの
位置決めをするものであり、前記各第２のＶ溝は、前記
押圧部材によって押圧された前記各光ファイバの外周面
と係合して、前記発光面と平行な方向での前記各光ファ
イバの位置決めをするものであることを特徴とするＬＤ
モジュール。1. An LD array having a plurality of light emitting surfaces is held at a predetermined position, and a first V groove formed corresponding to each of the plurality of light emitting surfaces and continuous to the first V groove. It is possible to hold the coupling substrate having the second V groove formed by the above and the coupling substrate at a predetermined position and to pass a plurality of optical fibers to the first V groove and the second V groove, respectively. A substrate holding member, a pressing member that is fixed to the substrate holding member, and presses the plurality of optical fibers against the first and second V-shaped grooves, respectively, and holds the plurality of optical fibers and fits the substrate holding member. An optical fiber holding member that is detachably fitted, and each of the first V grooves engages with a tip end portion of each of the optical fibers pressed by the pressing member, and is orthogonal to the light emitting surface. To position each optical fiber in the direction And each of the second V grooves engages with the outer peripheral surface of each of the optical fibers pressed by the pressing member to position each of the optical fibers in a direction parallel to the light emitting surface. LD characterized by being
module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23902094A JP2967505B2 (en) | 1994-10-03 | 1994-10-03 | LD module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23902094A JP2967505B2 (en) | 1994-10-03 | 1994-10-03 | LD module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08101328A true JPH08101328A (en) | 1996-04-16 |
| JP2967505B2 JP2967505B2 (en) | 1999-10-25 |
Family
ID=17038701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23902094A Expired - Fee Related JP2967505B2 (en) | 1994-10-03 | 1994-10-03 | LD module |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2967505B2 (en) |
-
1994
- 1994-10-03 JP JP23902094A patent/JP2967505B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2967505B2 (en) | 1999-10-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19990714 |
|
| LAPS | Cancellation because of no payment of annual fees |