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- Withdrawn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 |