JPS63129344U - - Google Patents

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Publication number
JPS63129344U
JPS63129344U JP1987021950U JP2195087U JPS63129344U JP S63129344 U JPS63129344 U JP S63129344U JP 1987021950 U JP1987021950 U JP 1987021950U JP 2195087 U JP2195087 U JP 2195087U JP S63129344 U JPS63129344 U JP S63129344U
Authority
JP
Japan
Prior art keywords
light
receiving
amplifying
transmitted
output current
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
JP1987021950U
Other languages
English (en)
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 filed Critical
Priority to JP1987021950U priority Critical patent/JPS63129344U/ja
Publication of JPS63129344U publication Critical patent/JPS63129344U/ja
Pending legal-status Critical Current

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  • Optical Communication System (AREA)

Description

【図面の簡単な説明】
第１図は本考案の実施例を示す図、第２図は光
方向性結合器モジユールの外観を示す図である。 ＰＤ１……受信光を受光する素子、ＰＤ２……
送信分岐光を受光する素子、ｉ１＋ｉＳ……受信
光受光素子出力電流、Ａ１……その増幅手段、ｉ
２……送信分岐光受光素子出力電流、Ａ２……そ
の増幅手段、Ｒｆ２……利得調整手段。

Claims (1)

  1. 【実用新案登録請求の範囲】 光方向性結合器に受信光を受光する素子と送信
    分岐光を受光する素子とを設けると共に、 上記受信光受光素子出力電流を増幅する手段と
    上記送信分岐光受光素子出力電流を逆極性で増幅
    する手段とを設け、 上記両増幅手段の出力を加算し、且つ上記逆極
    性増幅手段の利得を調整する手段を設けることに
    より、 送信光の反射光による送信信号の受信信号への
    クロストークをキヤンセルするようにした光方向
    性結合器の反射光キヤンセル回路。
JP1987021950U 1987-02-17 1987-02-17 Pending JPS63129344U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1987021950U JPS63129344U (ja) 1987-02-17 1987-02-17

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987021950U JPS63129344U (ja) 1987-02-17 1987-02-17

Publications (1)

Publication Number Publication Date
JPS63129344U true JPS63129344U (ja) 1988-08-24

Family

ID=30818867

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987021950U Pending JPS63129344U (ja) 1987-02-17 1987-02-17

Country Status (1)

Country Link
JP (1) JPS63129344U (ja)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5614738A (en) * 1979-07-16 1981-02-13 Kokusai Denshin Denwa Co Ltd <Kdd> Light pulse echo detector
JPS5661844A (en) * 1979-10-24 1981-05-27 Nec Corp Optical multiplex transmission system
JPS5662436A (en) * 1979-10-29 1981-05-28 Nec Corp Optical multiplex transmission system
JPS6331636B2 (ja) * 1984-05-16 1988-06-24 Kogyo Gijutsuin

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5614738A (en) * 1979-07-16 1981-02-13 Kokusai Denshin Denwa Co Ltd <Kdd> Light pulse echo detector
JPS5661844A (en) * 1979-10-24 1981-05-27 Nec Corp Optical multiplex transmission system
JPS5662436A (en) * 1979-10-29 1981-05-28 Nec Corp Optical multiplex transmission system
JPS6331636B2 (ja) * 1984-05-16 1988-06-24 Kogyo Gijutsuin

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