JPS6284772U - - Google Patents
Info
- Publication number
- JPS6284772U JPS6284772U JP17721185U JP17721185U JPS6284772U JP S6284772 U JPS6284772 U JP S6284772U JP 17721185 U JP17721185 U JP 17721185U JP 17721185 U JP17721185 U JP 17721185U JP S6284772 U JPS6284772 U JP S6284772U
- Authority
- JP
- Japan
- Prior art keywords
- resistor
- laser diode
- terminal
- current
- flowing
- 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
- 238000009413 insulation Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 1
Landscapes
- Testing Of Individual Semiconductor Devices (AREA)
Description
第１図は本考案に係るレーザダイオード駆動回
路の一実施例を示す回路図であり、第２図は上記
実施例おける駆動信号源が出力する駆動信号の波
形例を示す波形図であり、第３図は上記駆動信号
によりレーザダイオードに流れ込む電流の観測結
果を示す波形図であり、第４図は上記駆動信号に
よりレーザダイオードが出力した光出力の信号波
形を示す波形図である。第５図は従来のダイオー
ド駆動回路によりレーザダイオードを駆動して電
流観測を行う場合の一例を示した回路図である。
１，２……端子、１０……駆動信号源、１１，
１２，１３……抵抗、２０……観測機器、３０…
…レーザダイオード。
FIG. 1 is a circuit diagram showing an embodiment of a laser diode drive circuit according to the present invention, and FIG. 2 is a waveform diagram showing an example of the waveform of a drive signal output from a drive signal source in the above embodiment. FIG. 3 is a waveform diagram showing the observation results of the current flowing into the laser diode due to the drive signal, and FIG. 4 is a waveform diagram showing the signal waveform of the optical output output from the laser diode due to the drive signal. FIG. 5 is a circuit diagram showing an example of a case where current observation is performed by driving a laser diode using a conventional diode drive circuit. 1, 2...Terminal, 10...Drive signal source, 11,
12, 13...Resistance, 20...Observation equipment, 30...
...Laser diode.
Claims (1)
れる端子と特性インピーダンスがＺの観測機器が
接続される端子との間に抵抗値がＲａの第１の抵
抗と抵抗値がＲｂの第２の抵抗とを直列接続し、 上記第１の抵抗と第２の抵抗との接続点を第３
の抵抗を介してレーザダイオードのカソードに接
続して成り、 上記第３の抵抗と上記レーザダイオードの導通
状態でのインピーダンスの絶縁値の和をＲｃとす
るとともに、上記第２の抵抗に流れる電流Ｉｂと
上記第３の抵抗に流れる電流Ｉｃとの比Ｉｃ／Ｉ
ｂをｈとして、 となるように上記第１ないし第３の抵抗の各抵抗
値を設定したことを特徴とするレーザダイオード
駆動回路。[Claims for Utility Model Registration] A first resistor with a resistance value of Ra between a terminal to which a driving signal source with a characteristic impedance of Z is connected and a terminal to which an observation device with a characteristic impedance of Z is connected; is connected in series with the second resistor of Rb, and the connection point between the first resistor and the second resistor is connected to the third resistor.
The sum of the impedance insulation values of the third resistor and the laser diode in the conductive state is Rc, and the current Ib flowing through the second resistor is connected to the cathode of the laser diode through a resistor. and the current Ic flowing through the third resistor: Ic/I
A laser diode drive circuit characterized in that the resistance values of the first to third resistors are set as follows, where b is h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17721185U JPS6284772U (en) | 1985-11-18 | 1985-11-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17721185U JPS6284772U (en) | 1985-11-18 | 1985-11-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6284772U true JPS6284772U (en) | 1987-05-29 |
Family
ID=31118199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17721185U Pending JPS6284772U (en) | 1985-11-18 | 1985-11-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6284772U (en) |
-
1985
- 1985-11-18 JP JP17721185U patent/JPS6284772U/ja active Pending
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