JPS62168668U - - Google Patents
Info
- Publication number
- JPS62168668U JPS62168668U JP1986057020U JP5702086U JPS62168668U JP S62168668 U JPS62168668 U JP S62168668U JP 1986057020 U JP1986057020 U JP 1986057020U JP 5702086 U JP5702086 U JP 5702086U JP S62168668 U JPS62168668 U JP S62168668U
- Authority
- JP
- Japan
- Prior art keywords
- output
- bias current
- amplifier
- monitor
- potential difference
- 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
- 230000003321 amplification Effects 0.000 claims 1
- 238000003199 nucleic acid amplification method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 1
Landscapes
- Optical Communication System (AREA)
Description
第１図は本考案の一実施例を示すブロツク図、
第２図は、前記実施例のＩｔ―Ｖｍ特性図、第３
図は、従来のＬＤのバイアス電流モニタ回路を示
すブロツク図、第４図は、従来例のＩｔ―Ｖｍ特
性図である。
図において、１，１５……ＬＤ、２，１６……
差動増幅器、３……クランプダイオード、４……
演算増幅器、５，１７……直流バイアス制御回路
、６，１８……コイル、７〜１３，１９〜２２…
…抵抗、１４……コンデンサ。
FIG. 1 is a block diagram showing an embodiment of the present invention.
FIG. 2 shows the It-Vm characteristic diagram of the above embodiment, and the third
The figure is a block diagram showing a conventional LD bias current monitor circuit, and FIG. 4 is an It-Vm characteristic diagram of the conventional example. In the figure, 1, 15...LD, 2, 16...
Differential amplifier, 3... Clamp diode, 4...
Operational amplifier, 5, 17... DC bias control circuit, 6, 18... Coil, 7-13, 19-22...
...Resistor, 14...Capacitor.
Claims (1)
つて生じる電位差として検出し、前記電位差を所
定の直流増幅器により直流増幅して得られる出力
電圧をモニタ出力とするバイアス電流モニタ回路
において、前記直流増幅器の出力段に、ダイオー
ドクランプ回路ならびにオフセツト電圧調整機能
を含む演算増幅器を付加し、前記演算増幅器によ
り直流増幅して得られる出力電圧を前記モニタ出
力とすることを特徴とするレーザダイオードのバ
イアス電流モニタ回路。 In a bias current monitor circuit that detects a bias current of a laser diode as a potential difference generated by a resistor, and uses a predetermined DC amplifier to DC amplify the potential difference to obtain an output voltage as a monitor output, the output stage of the DC amplifier is A bias current monitor circuit for a laser diode, characterized in that an operational amplifier including a diode clamp circuit and an offset voltage adjustment function is added thereto, and the output voltage obtained by direct current amplification by the operational amplifier is used as the monitor output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986057020U JPS62168668U (en) | 1986-04-15 | 1986-04-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986057020U JPS62168668U (en) | 1986-04-15 | 1986-04-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62168668U true JPS62168668U (en) | 1987-10-26 |
Family
ID=30886346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986057020U Pending JPS62168668U (en) | 1986-04-15 | 1986-04-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62168668U (en) |
-
1986
- 1986-04-15 JP JP1986057020U patent/JPS62168668U/ja active Pending