JPH0634854A - Pd module - Google Patents
Pd moduleInfo
- Publication number
- JPH0634854A JPH0634854A JP4191242A JP19124292A JPH0634854A JP H0634854 A JPH0634854 A JP H0634854A JP 4191242 A JP4191242 A JP 4191242A JP 19124292 A JP19124292 A JP 19124292A JP H0634854 A JPH0634854 A JP H0634854A
- Authority
- JP
- Japan
- Prior art keywords
- photodiode
- module
- prism
- right angle
- light
- 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.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/4805—Shape
- H01L2224/4809—Loop shape
- H01L2224/48091—Arched
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/484—Connecting portions
- H01L2224/4847—Connecting portions the connecting portion on the bonding area of the semiconductor or solid-state body being a wedge bond
- H01L2224/48472—Connecting portions the connecting portion on the bonding area of the semiconductor or solid-state body being a wedge bond the other connecting portion not on the bonding area also being a wedge bond, i.e. wedge-to-wedge
Landscapes
- Optical Couplings Of Light Guides (AREA)
- Light Receiving Elements (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は光機器に使用され光信号
を電気信号に変換するＰＤ（ホトダイオード）モジュー
ルに関し、特に高周波信号レスポンスを良好にするＰＤ
モジュールに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a PD (photodiode) module used in optical equipment for converting an optical signal into an electric signal, and particularly to a PD for improving a high frequency signal response.
Regarding modules.
【０００２】[0002]
【従来の技術】従来のＰＤモジュールについて、図５の
縦断面図を参照して説明する。2. Description of the Related Art A conventional PD module will be described with reference to the longitudinal sectional view of FIG.
【０００３】このＰＤモジュールは、光ファイバ１の光
出射端１ａからの入射光を受光面４に受けて電気信号に
変換するホトダイオード３のみで構成されている。この
ホトダイオード３の受光素子には、アバランシェダイオ
ードやホトダイオードが使われる。上記電気信号は、ホ
トダイオード３のリード線７および８を通してプリント
板５に供給され、プリント板５に搭載される電気回路で
信号処理される。This PD module is composed of only a photodiode 3 which receives an incident light from a light emitting end 1a of an optical fiber 1 on a light receiving surface 4 and converts it into an electric signal. An avalanche diode or a photodiode is used for the light receiving element of the photodiode 3. The electric signal is supplied to the printed board 5 through the lead wires 7 and 8 of the photodiode 3 and processed by an electric circuit mounted on the printed board 5.
【０００４】ホトダイオード３の受光面４は、光ファイ
バ１の軸に対して垂直に配置される必要がある。光ファ
イバ３を支持する光コネクタ（図示せず）の寸法が大き
いため、ホトダイオード３のプリント板５への実装にお
いては、図示のとおり、ホトダイオード３のリード線７
および８を９０°曲げることになる。The light receiving surface 4 of the photodiode 3 needs to be arranged perpendicular to the axis of the optical fiber 1. Since the size of the optical connector (not shown) that supports the optical fiber 3 is large, when mounting the photodiode 3 on the printed board 5, the lead wire 7 of the photodiode 3 is mounted as shown in the drawing.
And 8 would be bent 90 °.
【０００５】[0005]
【発明が解決しようとする課題】この従来のＰＤモジュ
ールでは、このＰＤモジュールをプリント板へ実装する
のに長いリード線を必要とし、この長いリード線はＰＤ
モジュールからの出力電気信号の高周波レスポンスを劣
化させる大きな原因になっていた。In this conventional PD module, a long lead wire is required to mount this PD module on a printed board, and this long lead wire is a PD.
It was a major cause of deterioration of the high frequency response of the output electric signal from the module.
【０００６】[0006]
【課題を解決するための手段】本発明のＰＤモジュール
は、上記ホトダイオードに加え光ファイバの光出射端と
上記ホトダイオードの受光面との間に直角プリズムを配
置し、上記光ファイバから出射した光信号をこの直角プ
リズムで直角に折り返して上記ホトダイオードの受光面
に入れている。従って、上記ホトダイオードのリード線
を曲ずにプリント板に直接とりつけることができるの
で、上記リード線を短くでき、上記電気信号の高周波レ
スポンス劣化を最小にすることができる。In the PD module of the present invention, in addition to the photodiode, a right-angle prism is arranged between the light emitting end of the optical fiber and the light receiving surface of the photodiode, and an optical signal emitted from the optical fiber is provided. Is folded back at a right angle by this right-angle prism and placed in the light-receiving surface of the photodiode. Therefore, since the lead wire of the photodiode can be directly attached to the printed board without bending, the lead wire can be shortened and the high frequency response deterioration of the electric signal can be minimized.
【０００７】なお、上記ＰＤモジュールに上記光ファイ
バを一体に構成してもよく、また上記直角プリズムと上
記ホトダイオードとの間，あるいは上記光ファイバと上
記直角プリズムとの間に上記光信号を集束するレンズを
設けるとさらに受光性能を向上することができる。The optical fiber may be integrated with the PD module, and the optical signal may be focused between the rectangular prism and the photodiode or between the optical fiber and the rectangular prism. Providing a lens can further improve the light receiving performance.
【０００８】[0008]
【実施例】次に、本発明について図面を参照して説明す
る。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings.
【０００９】図１は本発明の一実施例の構造図である。
（ａ）図は縦断面図であり、（ｂ）図は光信号動作図で
ある。FIG. 1 is a structural diagram of an embodiment of the present invention.
FIG. 7A is a vertical sectional view, and FIG. 8B is an optical signal operation diagram.
【００１０】図１を参照すると、光コネクタ（図示せ
ず）によってホトダイオード３もしくはプリント板５に
支持されている光ファイバ１に光信号１１を入力する
と、この光信号１１は光ファイバ１の光出射端１ａから
直角プリズムであるプリズム２の直角を挟む辺の一つに
入射される。光出射端１ａからの光信号１１は、広がり
ながらプリズム２の側面で９０度方向を変えて折り返
し、さらに直進してプリズム２の直角を挟む辺の他の一
つを経てホトダイオード３の受光面に入射する。この光
信号１１はホトダイオード３によって電気信号に変換さ
れる。この電気信号は、ホトダイオード３のリード線７
および８を通してプリント板５に供給され、プリント板
５に搭載される電気回路（図示せず）で信号処理され
る。ここで、ホトダイオード３のリード線７および８
は、曲げることなく、ホトダイオードの受光面４に平行
に配置されているプリント板５にはんだ６により固定さ
れている。従って、リード線７および８の長さを短かく
でき、例えばホトダイオード３の本体から上記電気回路
の初段増幅器までの距離を短くでき、上記電気信号の高
周波信号レスポンスの劣化を最小限にとどめることがで
きている。Referring to FIG. 1, when an optical signal 11 is input to an optical fiber 1 supported by a photodiode 3 or a printed board 5 by an optical connector (not shown), the optical signal 11 is emitted from the optical fiber 1. The light enters from one end 1a to one of the sides sandwiching the right angle of the prism 2 which is a right angle prism. The optical signal 11 from the light emitting end 1a is turned back by changing the direction of 90 degrees on the side surface of the prism 2 while spreading, and further goes straight to the light receiving surface of the photodiode 3 via another one of the sides sandwiching the right angle of the prism 2. Incident. This optical signal 11 is converted into an electric signal by the photodiode 3. This electric signal is applied to the lead wire 7 of the photodiode 3.
And 8 to be supplied to the printed board 5 and undergo signal processing by an electric circuit (not shown) mounted on the printed board 5. Here, the lead wires 7 and 8 of the photodiode 3 are
Is fixed to the printed board 5 arranged in parallel with the light receiving surface 4 of the photodiode with solder 6 without bending. Therefore, the lengths of the lead wires 7 and 8 can be shortened, for example, the distance from the main body of the photodiode 3 to the first stage amplifier of the electric circuit can be shortened, and deterioration of the high frequency signal response of the electric signal can be minimized. is made of.
【００１１】なお、ホトダイオード３の受光面４は比較
的広く、また光ファイバ１の光出射端１ａとホトダイオ
ード３の受光面４との距離も短いため、光信号１１が広
がっても信号量の損失少なくこの光信号１１をホトダイ
オード３に結合できる。また、既に述べたとおり、ホト
ダイオード３の受光素子には、アバランシェダイオード
やホトダイオードを使用できるのは勿論である。Since the light receiving surface 4 of the photodiode 3 is relatively wide and the distance between the light emitting end 1a of the optical fiber 1 and the light receiving surface 4 of the photodiode 3 is short, even if the optical signal 11 spreads, the signal amount is lost. At a minimum, this optical signal 11 can be coupled to the photodiode 3. Further, as described above, it goes without saying that an avalanche diode or a photodiode can be used as the light receiving element of the photodiode 3.
【００１２】上述のＰＤモジュールは、プリズム２とホ
トダイオード３とを一体に構成してもよく、さらにこの
ＰＤモジュールに光ファイバ１を加えて一体に構成して
もよい。In the PD module described above, the prism 2 and the photodiode 3 may be integrally formed, or the PD module may be added with the optical fiber 1 to be integrally formed.
【００１３】図２は本発明の第２の実施例の縦断面図で
ある。FIG. 2 is a vertical sectional view of the second embodiment of the present invention.
【００１４】図２の実施例によるＰＤモジュールは、ホ
トダイオード３の受光面４の面積が小さい場合に適して
いる。光ファイバ１の光出射端１ａからの光信号１１
は、広がりながらプリズム２１の側面に当る。プリズム
２１はこの面が外に凸，即ち光信号の反射面が凹面にな
っており、従ってプリズム２１の側面で反射後の光信号
１１は集光されてホトダイオード３の受光面４に入射す
る。このように、光信号１１が集束するので、受光面４
の小さな受光素子を有するホトダイオード３でも信号損
失少なく光信号１１を受けることができる。The PD module according to the embodiment of FIG. 2 is suitable when the area of the light receiving surface 4 of the photodiode 3 is small. Optical signal 11 from the light emitting end 1a of the optical fiber 1
Hits the side surface of the prism 21 while spreading. This surface of the prism 21 is convex outward, that is, the reflecting surface of the optical signal is concave. Therefore, the optical signal 11 after being reflected by the side surface of the prism 21 is condensed and enters the light receiving surface 4 of the photodiode 3. In this way, since the optical signal 11 is focused, the light receiving surface 4
The photodiode 3 having a small light receiving element can receive the optical signal 11 with little signal loss.
【００１５】図３は本発明の第３の実施例の縦断面図で
ある。FIG. 3 is a vertical sectional view of a third embodiment of the present invention.
【００１６】図３の実施例によるＰＤモジュールは、図
２の実施例における曲率をつけたプリズム２１に変え
て、光信号の集光素子として、光ファイバ１の光出射端
１ａとプリズム２の直角を挟む辺の一つとの間に、レン
ズ３１を設けている。このＰＤモジュールの動作も、図
２の実施例とほぼ同じである。このＰＤモジュールにお
いても、レンズ３１とプリズム２とホトダイオード３と
を一体に構成してもよく、さらにこのＰＤモジュールに
光ファイバ１を加えて一体に構成してもよい。The PD module according to the embodiment shown in FIG. 3 is replaced with the prism 21 having a curvature in the embodiment shown in FIG. 2 and is used as a light signal condensing element. A lens 31 is provided between the lens 31 and one of the sides sandwiching the lens 31. The operation of this PD module is almost the same as that of the embodiment shown in FIG. In this PD module as well, the lens 31, the prism 2 and the photodiode 3 may be integrally formed, or the optical fiber 1 may be added to this PD module to be integrally formed.
【００１７】図４は本発明の第４の実施例の縦断面図で
ある。FIG. 4 is a vertical sectional view of a fourth embodiment of the present invention.
【００１８】図４の実施例によるＰＤモジュールは、図
４の実施例のＰＤモジュールに加え、プリズム２の直角
を挟む辺の他の一つとホトダイオード３の受光面４との
間にレンズ４１を備えている。このＰＤモジュールのレ
ンズ３１と４１とは、図４の実施例におけるレンズ３１
一つの機能を二つで分担していることになる。The PD module according to the embodiment of FIG. 4 is provided with a lens 41 between the other side of the prism 2 sandwiching the right angle and the light receiving surface 4 of the photodiode 3 in addition to the PD module of the embodiment of FIG. ing. The lenses 31 and 41 of this PD module are the lenses 31 and 41 in the embodiment of FIG.
It means that one function is shared by two.
【００１９】[0019]
【発明の効果】以上説明したように本発明のＰＤモジュ
ールでは、光ファイバから入射する光信号をプリズムに
より９０°曲げて反射させ、この反射光信号をホトダイ
オードの受光面に入射する。従って、上記ホトダイオー
ドを、リード線を曲げずに上記受光面に平行に配置され
たプリント板に実装できる。これは、上記リード線の長
さを短くする効果があるので、リード線による電気信号
の高周波レスポンス劣化を最小に抑える効果がある。As described above, in the PD module of the present invention, the optical signal incident from the optical fiber is bent by 90 ° and reflected by the prism, and the reflected optical signal is incident on the light receiving surface of the photodiode. Therefore, the photodiode can be mounted on a printed board arranged parallel to the light receiving surface without bending the lead wire. This has the effect of shortening the length of the lead wire, and has the effect of minimizing the deterioration of the high frequency response of the electrical signal due to the lead wire.
【図１】本発明の一実施例の構造図である。（ａ）図は
縦断面図であり、（ｂ）図は光信号動作図である。FIG. 1 is a structural diagram of an embodiment of the present invention. FIG. 7A is a vertical sectional view, and FIG. 8B is an optical signal operation diagram.
【図２】本発明の第２の実施例の縦断面図である。FIG. 2 is a vertical sectional view of a second embodiment of the present invention.
【図３】本発明の第３の実施例の縦断面図である。FIG. 3 is a vertical sectional view of a third embodiment of the present invention.
【図４】本発明の第４の実施例の縦断面図である。FIG. 4 is a vertical sectional view of a fourth embodiment of the present invention.
【図５】従来技術によるＰＤモジュールの縦断面図であ
る。FIG. 5 is a vertical cross-sectional view of a PD module according to the related art.
１ 光ファイバ １ａ 光出射端 ２，２１ プリズム ３ ホトダイオード ４ 受光面 ５ プリント板 ６ はんだ ７，７ リード線 １１ 光信号 ３１，４１ レンズ 1 Optical fiber 1a Light emitting end 2,21 Prism 3 Photodiode 4 Light receiving surface 5 Printed board 6 Solder 7,7 Lead wire 11 Optical signal 31,41 Lens
Claims (7)
とともに直角を挟む辺の他の一つから出射光を生じる直
角プリズムと、前記出射光を受光面に受けて電気信号を
生じるホトダイオードとを備えることを特徴とするＰＤ
モジュール。1. A right-angle prism that receives incident light from one of the sides sandwiching a right angle and emits outgoing light from another of the sides sandwiching a right angle, and a photodiode that receives the outgoing light on a light-receiving surface to generate an electric signal. PD characterized by including
module.
ダイオードであることを特徴とする請求項１記載のＰＤ
モジュール。2. The PD according to claim 1, wherein the photodiode is an avalanche photodiode.
module.
面が外に凸の曲率を有することを特徴とする請求項１記
載のＰＤモジュール。3. The PD module according to claim 1, wherein a surface of the right-angled prism facing a right-angled corner has an outwardly convex curvature.
て前記直角プリズムの前記直角を挟む辺の一つに供給す
る第１のレンズをさらに備えることを特徴とする請求項
１記載のＰＤモジュール。4. The PD according to claim 1, wherein the PD module further comprises a first lens that collects incident light and supplies the incident light to one of sides of the rectangular prism that sandwich the right angle. module.
ムの前記直角を挟む辺の一つに前記入射光を光出射端か
ら供給する光ファイバをさらに備えることを特徴とする
請求項１記載のＰＤモジュール。5. The PD module according to claim 1, wherein the PD module further comprises an optical fiber for supplying the incident light from a light emitting end to one of sides of the right angle prism that sandwich the right angle. .
リズムの前記直角を挟む一辺との間に第１のレンズをさ
らに配置することを特徴とする請求項５記載のＰＤモジ
ュール。6. The PD module according to claim 5, further comprising a first lens disposed between the light emitting end of the optical fiber and one side of the rectangular prism that sandwiches the right angle.
他の一つと前記ホトダイオードの受光面との間に第２の
レンズをさらに配置することを特徴とする請求項６記載
のＰＤモジュール。7. The PD module according to claim 6, further comprising a second lens disposed between one of the sides of the right angle prism that sandwich the right angle and the light receiving surface of the photodiode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4191242A JPH0634854A (en) | 1992-07-20 | 1992-07-20 | Pd module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4191242A JPH0634854A (en) | 1992-07-20 | 1992-07-20 | Pd module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0634854A true JPH0634854A (en) | 1994-02-10 |
Family
ID=16271267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4191242A Withdrawn JPH0634854A (en) | 1992-07-20 | 1992-07-20 | Pd module |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0634854A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2744838A1 (en) * | 1996-02-13 | 1997-08-14 | Schneider Electric Sa | PHOTOELECTRIC DETECTOR WITH BEAM RETURN |
| JP2004533004A (en) * | 2000-11-01 | 2004-10-28 | インテル・コーポレーション | Apparatus and method for collimating and transferring beams |
-
1992
- 1992-07-20 JP JP4191242A patent/JPH0634854A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2744838A1 (en) * | 1996-02-13 | 1997-08-14 | Schneider Electric Sa | PHOTOELECTRIC DETECTOR WITH BEAM RETURN |
| JP2004533004A (en) * | 2000-11-01 | 2004-10-28 | インテル・コーポレーション | Apparatus and method for collimating and transferring beams |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Application deemed to be withdrawn because no request for examination was validly filed |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19991005 |