JPS575449A - Optical loop data transmitting system - Google Patents

Optical loop data transmitting system

Info

Publication number
JPS575449A
JPS575449A JP8005180A JP8005180A JPS575449A JP S575449 A JPS575449 A JP S575449A JP 8005180 A JP8005180 A JP 8005180A JP 8005180 A JP8005180 A JP 8005180A JP S575449 A JPS575449 A JP S575449A
Authority
JP
Japan
Prior art keywords
signal
optical
stations
transmission line
signals
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
JP8005180A
Other languages
Japanese (ja)
Inventor
Toshio Hasegawa
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP8005180A priority Critical patent/JPS575449A/en
Publication of JPS575449A publication Critical patent/JPS575449A/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
    • H04B10/29—Repeaters

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)
  • Small-Scale Networks (AREA)

Abstract

PURPOSE:To increase the usage efficiency of transmission line without a guard band, by performing branch coupling of signal through the use of an optical passive component, performing reproduction and relaying of the signal and making the branch coupling of signals and delay time equal to the reproduction of signals from other stations. CONSTITUTION:An optical signal given to branch coupling type stations 13, 14 from an optical transmission line 3 is branched at 15 into a photoelectrical converting means O/E 8 of an optical pulse transmitting means 18 and a delay means 17. If the optical signal discriminated by the O/E 8 is a signal for the station itself, it is fetched to a line connection controlling section CSC11 and transmitted to a terminal 4, and if it is a signal for other stations, it is transmitted again to the optical transmitting line 3 via the electrooptic converting means E/O 9 and an optical coupling means 16. On the other hand, an optical signal given to the delay means 17 is delayed so that the signal for other stations is reproduced and it is equal to the delay time caused by the E/O 9, and coupled at 16 with the signal for other stations and transmitted to the optical transmission line 3. Thus, no guard band between burst signals is necessary.
JP8005180A 1980-06-13 1980-06-13 Optical loop data transmitting system Pending JPS575449A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8005180A JPS575449A (en) 1980-06-13 1980-06-13 Optical loop data transmitting system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8005180A JPS575449A (en) 1980-06-13 1980-06-13 Optical loop data transmitting system

Publications (1)

Publication Number Publication Date
JPS575449A true JPS575449A (en) 1982-01-12

Family

ID=13707435

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8005180A Pending JPS575449A (en) 1980-06-13 1980-06-13 Optical loop data transmitting system

Country Status (1)

Country Link
JP (1) JPS575449A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63175551A (en) * 1987-01-16 1988-07-19 Nec Corp Optical network system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5553900A (en) * 1978-10-17 1980-04-19 Mitsubishi Electric Corp Linear particle accelerator

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5553900A (en) * 1978-10-17 1980-04-19 Mitsubishi Electric Corp Linear particle accelerator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63175551A (en) * 1987-01-16 1988-07-19 Nec Corp Optical network system

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