JPH02151818A - Light emitting element module - Google Patents

Light emitting element module

Info

Publication number
JPH02151818A
JPH02151818A JP63307335A JP30733588A JPH02151818A JP H02151818 A JPH02151818 A JP H02151818A JP 63307335 A JP63307335 A JP 63307335A JP 30733588 A JP30733588 A JP 30733588A JP H02151818 A JPH02151818 A JP H02151818A
Authority
JP
Japan
Prior art keywords
ferrule
optical fiber
light
lens
light emitting
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
Application number
JP63307335A
Other languages
Japanese (ja)
Inventor
Noboru Kurata
昇 倉田
Tomoaki Ieda
知明 家田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP63307335A priority Critical patent/JPH02151818A/en
Publication of JPH02151818A publication Critical patent/JPH02151818A/en
Pending legal-status Critical Current

Links

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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Led Device Packages (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE:To stabilize the coupling efficiency of light by making light which is emitted by a light emission chip incident on a short optical fiber which is held in a ferrule through a lens which has a spherical surface and coupling the ferrule with the ferrule of an optical connector coaxially. CONSTITUTION:The short optical fiber 15 is held on the center axis and the lens 13 having the spherical surface is fixed to one and surface of the ferrule 14 whose end surfaces are both ground, and the other end surface part is inserted into a cylindrical split sleeve 16 almost to the half, thereby making the light from the semiconductor light emitting chip 11 incident on the optical fiber 15 through the lens 13. Therefore, the light from the semiconductor light emitting chip 11 is made incident on the optical fiber 15 through the lens 13. Therefore, the light from the semiconductor chip 11 is incident on a long optical fiber 15 and the ferrule 19 of an optical connector having the same external diameter with the ferrule 14 is inserted into the cylindrical split sleeve 16 from the opposite side to arrange the two ferrules almost coaxilally with good reproducibility. Consequently, the light is coupled efficiently.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、光通信／光計測などの光源に用いる発光素子
モジュー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 light emitting element module used as a light source for optical communication/optical measurement.

従来の技術 従来、この種の発光素子モジュールは第４図に示すよう
な構成であった。第４図において、１は２１＼−７ 半導体発光チップ、２は発光チップ１を固定したステム
、３はロッドレンズ、４および５は各々第１および第２
の筐体、６は光ファイバ７を保持した光コネクタの７ヱ
ｌレールである。同図において、第２の筺体６には、フ
ェル−／Ｉ／６を挿入する穴８が設けられておシ、発光
チップ１から出射した光がロッドレンズ３によシ集光さ
れた後、フェル−／Ｌ／６の光ファイバ７に入射するよ
うに、第１の筺体４と第２の筺体５が互いに固定されて
いる。2. Description of the Related Art Conventionally, this type of light emitting element module has had a structure as shown in FIG. In FIG. 4, 1 is a 21\-7 semiconductor light emitting chip, 2 is a stem to which the light emitting chip 1 is fixed, 3 is a rod lens, and 4 and 5 are first and second light emitting chips, respectively.
The casing 6 is a rail 7 of an optical connector holding an optical fiber 7. In the same figure, the second housing 6 is provided with a hole 8 into which the FEL/I/6 is inserted, and after the light emitted from the light emitting chip 1 is focused by the rod lens 3, The first housing 4 and the second housing 5 are fixed to each other so that the light enters the optical fiber 7 of FEL-/L/6.

以上のように、従来は、光コネクタのフェノレール６の
挿抜が可能なレセプタクル型発光素子モジュールを構成
していた。As described above, conventionally, a receptacle-type light-emitting element module has been constructed in which the phenorail 6 of the optical connector can be inserted and removed.

発明が解決しようとする課題 このような従来の構成では、第２の筺体５の穴８の内径
と、フェル−／Ｖ６の外径との寸法差が原因で、がたが
生じ、特にコア径の小さなシングルモード光ファイバを
使用する場合には、光コネクタのフェルール６の挿抜に
よシ、光ファイバ了に入射する光量の変化、すなわち結
合効率変化が大きくなるという欠点があった。Problems to be Solved by the Invention In such a conventional configuration, backlash occurs due to the dimensional difference between the inner diameter of the hole 8 of the second housing 5 and the outer diameter of the felt/V6. When using a single-mode optical fiber with a small diameter, there is a drawback that the amount of light incident on the optical fiber increases when the ferrule 6 of the optical connector is inserted or removed, that is, the coupling efficiency changes greatly.

３　よ−ノ 本発明は、このような課題を解決するもので、光ファイ
バを固定したフェルールの挿抜に起因する光軸のずれが
小さく、結合効率が安定したレセプ、タクル型発光素子
モジュールの提供を目的としたものである。3. The present invention solves these problems, and provides a receptacle and tackle-type light emitting element module in which the deviation of the optical axis caused by the insertion and removal of the ferrule to which the optical fiber is fixed is small and the coupling efficiency is stable. The purpose is to

課題を解決するための手段 この課題を解決するために本発明は、長さの短い光ファ
イバを中心軸上に保持した上、両端面を研磨したフェル
ールの、一方の端面に球面を有するレンズを固定し、他
方の端面部分を円筒状の割りスリーブに半ばまで挿入し
て、半導体発光チップからの光を、球面を有するレンズ
を介してフェルールの光ファイバに入射させるように構
成するものである。Means for Solving the Problem In order to solve this problem, the present invention holds a short optical fiber on the central axis and uses a lens having a spherical surface on one end surface of a ferrule with both end surfaces polished. The semiconductor light emitting chip is fixed, and the other end portion is inserted halfway into a cylindrical split sleeve, so that light from the semiconductor light emitting chip is made to enter the optical fiber of the ferrule via a lens having a spherical surface.

作用 本発明は上記した構成によシ、半導体発光チップからの
光が、球面を有するレンズを介して、フェルールの中心
軸上に保持された長さの短い光ファイバに入射するので
、前記フェルール径を持つ光コネクタのフェルールを、
円筒状の割りスリーブの反対側から挿入することで、再
現性良く２つのフェルールがほぼ同軸上に配置され、そ
の結果、光コネクタの７エルールの中心軸に固定された
光ファイバに光を効率よく結合でき、優れた発光素子モ
ジュールとして機能する。Effect of the Invention According to the above-described structure, the present invention allows light from a semiconductor light emitting chip to enter a short optical fiber held on the central axis of the ferrule through a lens having a spherical surface. Optical connector ferrule with
By inserting the cylindrical split sleeve from the opposite side, the two ferrules are placed almost coaxially with good reproducibility, and as a result, light is efficiently transmitted to the optical fiber fixed to the center axis of the 7 ferrules of the optical connector. can be combined to function as an excellent light emitting device module.

実施例 第１図は本発明の一実施例による発光素子モジュールの
構成を示す断面図である。同図において、１１は半導体
発光チップ、１２は発光チップ１１を固定するステム、
１３は球レンズ、１４はその中心軸上に長さの短い光フ
ァイバ１５を保持した円筒状のフェルール、１６は円筒
状の割りスリーブ、１７および１８は筺体、１９は外部
から接続する光コネクタの、中心軸状に光ファイバ２ｏ
を保持したフェルールである。Embodiment FIG. 1 is a sectional view showing the structure of a light emitting element module according to an embodiment of the present invention. In the figure, 11 is a semiconductor light emitting chip, 12 is a stem for fixing the light emitting chip 11,
13 is a spherical lens, 14 is a cylindrical ferrule holding a short optical fiber 15 on its central axis, 16 is a cylindrical split sleeve, 17 and 18 are housings, and 19 is an optical connector to be connected from the outside. , optical fiber 2o along the central axis
It is a ferrule that holds.

ステム１２およびフェルール 固定されている。フェル−）ｖ１４は、その中に光ファ
イバ１５を保持したまま、両端面を研磨されておシ、一
方の端面の中心軸上に球レンズ１３を固定し、他方の端
面を、同図に示すように割りス６　ページ リープ１６の半ばまで挿入している。The stem 12 and ferrule are fixed. While holding the optical fiber 15 therein, the spherical lens 13 is fixed on the central axis of one end surface, and the other end surface is fixed as shown in the figure. As shown in Figure 6, page leap 16 is inserted up to the middle.

割りスリーブ１６は、第２図の外観図に示すように、軸
方向に切シ込みがあシ、フェｌ−／Ｌ／１４の外径よシ
若干小さい内径を持つ、弾性金属などで構成したパイプ
である。割りスリーブ１６は、フェルール１４から抜は
落ちないように筺体１７と１８によって、少しの間隙を
もって囲まれ、保持されている。As shown in the external view of Fig. 2, the split sleeve 16 is made of an elastic metal, etc., and has a notch in the axial direction, and has an inner diameter slightly smaller than the outer diameter of the FEL-/L/14. It's a pipe. The split sleeve 16 is surrounded and held with a small gap between the casings 17 and 18 so that it does not fall out from the ferrule 14.

フエ／Ｌ’−／Ｌ’１４の球レンズ１３を固定した端面
は、第３図の要部説明図に示すように、例えば凹面に研
磨され、球レンズ１３の位置合わせと、固定を容易にし
ている。なお、同図中の２１は球レンズ１３を固定する
接着剤である。The end face of the FUE/L'-/L'14 on which the ball lens 13 is fixed is, for example, polished into a concave surface, as shown in the main part explanatory diagram of FIG. 3, to facilitate positioning and fixing of the ball lens 13. ing. Note that 21 in the figure is an adhesive for fixing the ball lens 13.

以下、再び第１図に戻って、その動作を説明する。発光
チップ１１から出射した光は、球レンズ１３によって収
束され、光ファイバ１５に入射する。光ファイバ１５は
フェル−／Ｌ／１４の中心軸上に保持され、フェル−／
Ｌ／１４は割りスリーブ１６に挿入されている。それゆ
え、フェル−／ｌ／１４とほぼ同じ外径を持つ光コネク
タのフエ／ｌ／−／ｌ／１９６　　・−／ を、割りスリーブ１６に挿入することによシ、その中心
軸上に固定された光ファイバ２ｏは、光ファイバ１６と
、再現性良く同軸に配置され、光ファイバ１６と光ファ
イバ２ｏとの光の結合が効率良く行なわれる。Hereinafter, the operation will be explained by returning to FIG. 1 again. The light emitted from the light emitting chip 11 is converged by the ball lens 13 and enters the optical fiber 15. The optical fiber 15 is held on the central axis of the fer-/L/14, and
L/14 is inserted into the split sleeve 16. Therefore, by inserting the optical connector F/l/-/l/196 ・-/ into the split sleeve 16, which has approximately the same outer diameter as the FEL/l/14, it is fixed on its central axis. The optical fiber 2o is arranged coaxially with the optical fiber 16 with good reproducibility, and light is efficiently coupled between the optical fiber 16 and the optical fiber 2o.

第１図に示す発光素子モジュールは、例えばコア径の小
さなシングルモード光ファイバとの結合が、再現性良〈
実施できるので、光ファイバを信号伝送路とした通信系
において、この発光素子モジュールを光送信器の光信号
の光源に用いることによシ、光信号レベルの安定した、
信頼性の高い通信系が構築できる効果が得られる。The light emitting element module shown in Fig. 1 can be coupled with, for example, a single mode optical fiber with a small core diameter, with good reproducibility.
By using this light emitting element module as a light source of an optical signal of an optical transmitter in a communication system using an optical fiber as a signal transmission path, it is possible to achieve a stable optical signal level.
The effect of constructing a highly reliable communication system can be obtained.

なお、本実施例では発光チップからの光を光ファイバに
入射させるために、球レンズを用いて説明したが、半球
レンズ、非球面レンズなど、略球面を有するレンズであ
れば何を用いても良い。In this example, a spherical lens was used to input the light from the light emitting chip into the optical fiber, but any lens having a substantially spherical surface, such as a hemispherical lens or an aspherical lens, may be used. good.

さらに、球レンズを固定するフェルールの端面のみ、凹
面研磨として説明したが、もちろん平面研磨を採用して
も良い。また、このフェルールの他の端面は、平面研磨
でも、光の反射を防止する７　ヘ−７ 効果のある斜め研磨、ｐｃ研磨でも、何を採用しても良
い。Furthermore, although only the end face of the ferrule for fixing the spherical lens has been described as being concavely polished, it is of course possible to adopt plane polishing. Further, the other end face of this ferrule may be polished by flat surface polishing, diagonal polishing which is effective in preventing reflection of light, or PC polishing.

発明の効果 以上のように本発明によれば、発光チップから出射した
光を、球面を有するレンズを介して、フェルールに保持
した短い光ファイバに入射させ、割りスリーブを用いて
この７エルールと、外部から接続する光コネクタのフェ
ルールとを同軸状に結合するので、再現性良く２つのフ
ェルールｔされ、光コネクタのフェルールの挿抜に起因
する光軸のずれが生じにくく、コア径の小さなシングル
モード光フ，アイバへの光の結合効率が安定するという
効果が得られる。Effects of the Invention As described above, according to the present invention, the light emitted from the light emitting chip is made incident on a short optical fiber held in a ferrule via a lens having a spherical surface, and the split sleeve is used to connect the 7-erule with the light emitted from the light emitting chip. Since the ferrule of the optical connector connected from the outside is coaxially connected, the two ferrules are connected with good reproducibility, the optical axis is less likely to shift due to the insertion and removal of the ferrule of the optical connector, and single mode light with a small core diameter is produced. This has the effect of stabilizing the coupling efficiency of light to the fibers and fibers.

また、フェルールの一方の端面を凹面状に研磨すれば、
球レンズの位置合わせと、固定が容易になるという効果
が得られ、従来に比較して優れた発光素子モジュールを
提供できる。Also, if one end of the ferrule is polished into a concave shape,
The effect of facilitating the positioning and fixing of the ball lens can be obtained, and it is possible to provide a light emitting element module that is superior to conventional ones.

さらに、本発明の発光素子モジュールを光ファイバ通信
系の光送信器の光信号源に用いれば、光信号レベルの安
定した、信頼性の高い通信系が構築できる効果が得られ
る。Further, if the light emitting element module of the present invention is used as an optical signal source of an optical transmitter in an optical fiber communication system, it is possible to construct a highly reliable communication system with a stable optical signal level.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明の一実施例による発光素子モジュールの
構成を示す断面図、第２図は割りスリーブの外観斜視図
、第３図はフェルールの要部断面図、第４図は従来の発
光素子モジュールの断面図である。 １１　・・半導体発光チソフ、１２・・・ステム、１３
・・・・・・球レンズ、１４・　・フェルール、１６・
・・光ファイバ、１６　・・割りスリーブ、１了。 １　８・　・　−・筺体、　１　９　　　・・・フ　エ
ルレール、　２　０　　・・　・光ファイバ。 代理人の氏名　弁理士　粟　野　重　孝　ほか１名第 図 １３−−一挿しンズ。 １４−−−フェルール １−一一牛専祷拶Ｉ込チップ ４わ’ＪＱ”５−一一寅体Fig. 1 is a sectional view showing the configuration of a light emitting element module according to an embodiment of the present invention, Fig. 2 is an external perspective view of a split sleeve, Fig. 3 is a sectional view of main parts of a ferrule, and Fig. 4 is a conventional light emitting device module. It is a sectional view of an element module. 11... Semiconductor light-emitting Tisof, 12... Stem, 13
・・・・・・Ball lens, 14・・Ferrule, 16・
...Optical fiber, 16 ...Split sleeve, 1 completion. 1 8... - Housing, 1 9...Fuel rail, 20... Optical fiber. Name of agent: Patent attorney Shigetaka Awano and one other person Figure 13--1 Insert. 14---Ferrule 1-11 cow special greeting I included tip 4'JQ'' 5-11 body

Claims (1)

【特許請求の範囲】[Claims] 中心軸上に光ファイバを保持して、光ファイバ端面と共
にその両端面を研磨したフェルールと、前記フェルール
の一方の端面の略中心軸上に固定した略球面を有するレ
ンズと、前記フェルールの他方の端面付近を挿入した弾
性材からなる円筒状の割りスリーブと、前記略球面を有
するレンズを介して出射光が前記光ファイバに入射する
ように配置した半導体発光素子とから構成したことを特
徴とする発光素子モジュール。A ferrule that holds an optical fiber on a central axis and has both end faces polished together with the end face of the optical fiber, a lens having a substantially spherical surface fixed approximately on the central axis of one end face of the ferrule, and a lens on the other end face of the ferrule. It is characterized by comprising a cylindrical split sleeve made of an elastic material inserted near the end face, and a semiconductor light emitting element arranged so that the emitted light enters the optical fiber through the lens having a substantially spherical surface. Light emitting element module.
JP63307335A 1988-12-05 1988-12-05 Light emitting element module Pending JPH02151818A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63307335A JPH02151818A (en) 1988-12-05 1988-12-05 Light emitting element module

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63307335A JPH02151818A (en) 1988-12-05 1988-12-05 Light emitting element module

Publications (1)

Publication Number Publication Date
JPH02151818A true JPH02151818A (en) 1990-06-11

Family

ID=17967892

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63307335A Pending JPH02151818A (en) 1988-12-05 1988-12-05 Light emitting element module

Country Status (1)

Country Link
JP (1) JPH02151818A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6481901B1 (en) * 2001-08-02 2002-11-19 Alliance Fiber Optic Products, Inc. Asymmetrical sleeve for fiber optical collimators and method therefor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6481901B1 (en) * 2001-08-02 2002-11-19 Alliance Fiber Optic Products, Inc. Asymmetrical sleeve for fiber optical collimators and method therefor

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