JPS6395338U - - Google Patents
Info
- Publication number
- JPS6395338U JPS6395338U JP1986189041U JP18904186U JPS6395338U JP S6395338 U JPS6395338 U JP S6395338U JP 1986189041 U JP1986189041 U JP 1986189041U JP 18904186 U JP18904186 U JP 18904186U JP S6395338 U JPS6395338 U JP S6395338U
- Authority
- JP
- Japan
- Prior art keywords
- amplifier
- gain
- avalanche photodiode
- agc circuit
- frequency range
- 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.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Optical Communication System (AREA)
Description
第１図は本考案の一実施例のブロツク図、第２
図は従来の一実施例のブロツク図である。
１……アバランシエフオトダイオード、２……
前置増幅器、３……等化器、５……比較増幅器、
６……基準電圧、７……低域波器、８……高圧
発生回路。
Fig. 1 is a block diagram of an embodiment of the present invention;
The figure is a block diagram of a conventional embodiment. 1...Avalanche photodiode, 2...
Preamplifier, 3... Equalizer, 5... Comparison amplifier,
6...Reference voltage, 7...Low frequency generator, 8...High voltage generation circuit.
Claims (1)
エフオトダイオードに直流結合された増幅器と該
増幅器の出力直流電位を一定に保つ様に前記アバ
ランシエフオトダイオードの増倍率を変化させる
手段とを備え、アナログ信号による直接強度変調
光を受信する光受信器におけるＡＧＣ回路におい
て、前記増幅器の低周波域の利得を高周波域の利
得より大きくなるよう設定し、前記増幅器の出力
に、前記増幅器の利得特性と逆特性を有する等化
器を接続したことを特徴とした光受信器における
ＡＧＣ回路。 An avalanche photodiode, an amplifier DC-coupled to the avalanche photodiode, and means for changing the multiplication factor of the avalanche photodiode so as to keep the output DC potential of the amplifier constant. In an AGC circuit in an optical receiver that receives modulated light, the gain in the low frequency range of the amplifier is set to be larger than the gain in the high frequency range, and the output of the amplifier has characteristics opposite to the gain characteristics of the amplifier. An AGC circuit in an optical receiver, characterized in that a converter is connected to the AGC circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986189041U JPH0623080Y2 (en) | 1986-12-10 | 1986-12-10 | AGC circuit in optical receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986189041U JPH0623080Y2 (en) | 1986-12-10 | 1986-12-10 | AGC circuit in optical receiver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6395338U true JPS6395338U (en) | 1988-06-20 |
| JPH0623080Y2 JPH0623080Y2 (en) | 1994-06-15 |
Family
ID=31140972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986189041U Expired - Lifetime JPH0623080Y2 (en) | 1986-12-10 | 1986-12-10 | AGC circuit in optical receiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0623080Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08307362A (en) * | 1995-05-01 | 1996-11-22 | Nec Corp | Photodetector |
-
1986
- 1986-12-10 JP JP1986189041U patent/JPH0623080Y2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08307362A (en) * | 1995-05-01 | 1996-11-22 | Nec Corp | Photodetector |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0623080Y2 (en) | 1994-06-15 |
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