JPS57111145A - Terminal station equipment having optical amplifying function - Google Patents

Terminal station equipment having optical amplifying function

Info

Publication number
JPS57111145A
JPS57111145A JP55186925A JP18692580A JPS57111145A JP S57111145 A JPS57111145 A JP S57111145A JP 55186925 A JP55186925 A JP 55186925A JP 18692580 A JP18692580 A JP 18692580A JP S57111145 A JPS57111145 A JP S57111145A
Authority
JP
Japan
Prior art keywords
signal
synthesized
optical
data
terminal station
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
Application number
JP55186925A
Other languages
Japanese (ja)
Other versions
JPS6251531B2 (en
Inventor
Kazuo Iguchi
Naomasa Hanano
Tsutomu Fukugahara
Masaaki Takahashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP55186925A priority Critical patent/JPS57111145A/en
Publication of JPS57111145A publication Critical patent/JPS57111145A/en
Publication of JPS6251531B2 publication Critical patent/JPS6251531B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/29—Repeaters

Abstract

PURPOSE:To make a terminal station have an optical amplifying function so that a log of terminal stations can be connected to an optical transmission line. CONSTITUTION:A main signal 19 from an optical transmission line 1 is attenuated as prescribed, by a variable attenuator 15, and is synthesized with an insertion data 18 synchronizing with a transmission timing signal 13. A signal which has synthesized both of them becomes an optical signal by an electric signal/optical signal converting circuit 5, and is synthesized with an optical signal from an optical bypass line 17 by a partial transmission type mirror 10'. The output of the circuit 5 is that which has synthesized the signal 19 and the data 18, but the signal from the bypass line 17 is only a main signal, therefore, when both of them are synthesized as they are, dissidence of their peak values is caused. That is why, the main signal 19 is attenuated and is synthesized with the data 18. Accordingly, when a level of the signal 19 is lowered and is synthesized with the data 18, the output synthesized with the signal from the bypass line 17 by the mirror 10' becomes an output whose peak value has concided.
JP55186925A 1980-12-26 1980-12-26 Terminal station equipment having optical amplifying function Granted JPS57111145A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55186925A JPS57111145A (en) 1980-12-26 1980-12-26 Terminal station equipment having optical amplifying function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55186925A JPS57111145A (en) 1980-12-26 1980-12-26 Terminal station equipment having optical amplifying function

Publications (2)

Publication Number Publication Date
JPS57111145A true JPS57111145A (en) 1982-07-10
JPS6251531B2 JPS6251531B2 (en) 1987-10-30

Family

ID=16197101

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55186925A Granted JPS57111145A (en) 1980-12-26 1980-12-26 Terminal station equipment having optical amplifying function

Country Status (1)

Country Link
JP (1) JPS57111145A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60160231A (en) * 1984-01-31 1985-08-21 Toshiba Corp Loop form optical dataway system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60160231A (en) * 1984-01-31 1985-08-21 Toshiba Corp Loop form optical dataway system
US4727601A (en) * 1984-01-31 1988-02-23 Kabushiki Kaisha Toshiba Loop-type optical dataway system
JPH04424B2 (en) * 1984-01-31 1992-01-07 Tokyo Shibaura Electric Co

Also Published As

Publication number Publication date
JPS6251531B2 (en) 1987-10-30

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