JPS5744346A - Optical transmission system - Google Patents

Optical transmission system

Info

Publication number
JPS5744346A
JPS5744346A JP55119334A JP11933480A JPS5744346A JP S5744346 A JPS5744346 A JP S5744346A JP 55119334 A JP55119334 A JP 55119334A JP 11933480 A JP11933480 A JP 11933480A JP S5744346 A JPS5744346 A JP S5744346A
Authority
JP
Japan
Prior art keywords
signal
low
frequency component
pass filter
frequency
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
JP55119334A
Other languages
Japanese (ja)
Inventor
Takashi Kihara
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 JP55119334A priority Critical patent/JPS5744346A/en
Publication of JPS5744346A publication Critical patent/JPS5744346A/en
Pending 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
    • H04B10/25—Arrangements specific to fibre transmission

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Dc Digital Transmission (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE:To facilitate AGC at a reception side by separating a pulse signal into a high-frequency and a low-frequency component, by adding a constant DC signal to the high-frequency component, and by converting both the components into different optical signals to be transmitted. CONSTITUTION:A pulse signal applied from an input terminal 1 is separated into a high-frequency and a low-frequency component by a high-pass filter 2 and a low- pass filter 3 and after a DC signal 22 is added to the high-frequency component, the resulting signal is converted through light emitting elements 5 and 6 into an optical signal, which is transmitted from a transmission side 18 to a reception side 21 through optical fibers 6 and 7. At the reception side, it is converted into an electric signal by photodetecting elements 8 and 9 and the DC signal is extracted through a low-pass filter 11 to control the gains of AGC amplifiers 14 and 16. The outputs of the AGC amplifiers 14 and 16 are synthesized by a broad-band amplifier 19 to reproduce the pulse signal.
JP55119334A 1980-08-29 1980-08-29 Optical transmission system Pending JPS5744346A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55119334A JPS5744346A (en) 1980-08-29 1980-08-29 Optical transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55119334A JPS5744346A (en) 1980-08-29 1980-08-29 Optical transmission system

Publications (1)

Publication Number Publication Date
JPS5744346A true JPS5744346A (en) 1982-03-12

Family

ID=14758902

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55119334A Pending JPS5744346A (en) 1980-08-29 1980-08-29 Optical transmission system

Country Status (1)

Country Link
JP (1) JPS5744346A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6434030A (en) * 1987-07-30 1989-02-03 Oki Electric Ind Co Ltd Optical fiber transmitter
US5060306A (en) * 1989-07-27 1991-10-22 Kabushiki Kaisha Toshiba Optical transmisson system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6434030A (en) * 1987-07-30 1989-02-03 Oki Electric Ind Co Ltd Optical fiber transmitter
US5060306A (en) * 1989-07-27 1991-10-22 Kabushiki Kaisha Toshiba Optical transmisson system

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