JPS6126349U - Average received light power automatic control circuit - Google Patents

Average received light power automatic control circuit

Info

Publication number
JPS6126349U
JPS6126349U JP1984108886U JP10888684U JPS6126349U JP S6126349 U JPS6126349 U JP S6126349U JP 1984108886 U JP1984108886 U JP 1984108886U JP 10888684 U JP10888684 U JP 10888684U JP S6126349 U JPS6126349 U JP S6126349U
Authority
JP
Japan
Prior art keywords
control circuit
automatic control
received light
average received
power automatic
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
Application number
JP1984108886U
Other languages
Japanese (ja)
Inventor
順一 奥川
Original Assignee
株式会社日立製作所
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 株式会社日立製作所 filed Critical 株式会社日立製作所
Priority to JP1984108886U priority Critical patent/JPS6126349U/en
Publication of JPS6126349U publication Critical patent/JPS6126349U/en
Pending legal-status Critical Current

Links

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は、本考案による平均受光電力自動制御回路一を
示す図である。 Ｐｉｎ・・・送信信号光電力、Ｐｒ・・・帰還光電力、
ＷＭＸ・・・光合波器、ＰＤ・・・フォトダイオード、
ＡＰＤ・・・アバランシエ・フォト働ダイオード、Ｌ，
Ｐ，Ｆ・・・低域通過フィルタ、ＡＭＰ・・・増幅
器、Ｔｒ・・・トランジスタ、ＬＥＤ・・・発光ダイオ
ード、ＬＤ・・・半導体レーザ、Ｒ，Ｒ２，Ｒ３・・・
抵抗。FIG. 1 is a diagram showing an automatic average received light power control circuit according to the present invention. Pin...Transmission signal optical power, Pr...Return optical power,
WMX...optical multiplexer, PD...photodiode,
APD...Avalanche photo diode, L,
P, F...Low pass filter, AMP...Amplifier, Tr...Transistor, LED...Light emitting diode, LD...Semiconductor laser, R, R2, R3...
resistance.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 受光装置において、受光素子の平均受光電力の光電流を
モニタして、基準値と比較し、差分を反転増幅し、受光
装置に設けられた発光素子で電気−光変換し受光素子に
光を返す電気先負帰還による平均受光電力自動制御回路
。The photodetector monitors the photocurrent of the average light-receiving power of the photodetector, compares it with a reference value, inverts and amplifies the difference, performs electrical-to-optical conversion with the light-emitting element installed in the photodetector, and returns the light to the photodetector. Average received light power automatic control circuit using electrical negative feedback.
JP1984108886U 1984-07-20 1984-07-20 Average received light power automatic control circuit Pending JPS6126349U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1984108886U JPS6126349U (en) 1984-07-20 1984-07-20 Average received light power automatic control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1984108886U JPS6126349U (en) 1984-07-20 1984-07-20 Average received light power automatic control circuit

Publications (1)

Publication Number Publication Date
JPS6126349U true JPS6126349U (en) 1986-02-17

Family

ID=30668058

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1984108886U Pending JPS6126349U (en) 1984-07-20 1984-07-20 Average received light power automatic control circuit

Country Status (1)

Country Link
JP (1) JPS6126349U (en)

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