JPS5684047A - Light transmission system - Google Patents

Light transmission system

Info

Publication number
JPS5684047A
JPS5684047A JP16108179A JP16108179A JPS5684047A JP S5684047 A JPS5684047 A JP S5684047A JP 16108179 A JP16108179 A JP 16108179A JP 16108179 A JP16108179 A JP 16108179A JP S5684047 A JPS5684047 A JP S5684047A
Authority
JP
Japan
Prior art keywords
light
terminal station
unmodulated
emitting device
information signal
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
JP16108179A
Other languages
Japanese (ja)
Inventor
Ryozo Kishimoto
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP16108179A priority Critical patent/JPS5684047A/en
Publication of JPS5684047A publication Critical patent/JPS5684047A/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
    • H04B10/80—Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water
    • H04B10/806—Arrangements for feeding power

Landscapes

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

Abstract

PURPOSE:To make it possible to eliminate the need to provide a light emitting device except one light emitting device provided at the master terminal station of a light transmission system, by transmitting light signals from the master terminal station to a subordinate terminal station and then by receiving unmodulated light from the master terminal station by the subordinate terminal station via optical fiber. CONSTITUTION:In master terminal station 2-1, an information signal is received by photoelectric converter 3-1, a signal amplified by regenerative amplifier 4-1 is inputted to light modulator 5-1 and unmodulated light from light emitting device 6-1 is modulated and sent to optical fiber 1-1. To transmit the information signal from terminal station 2-2 to terminal station 2-1, information signal light incident to photoelectric converter 3-2 is amplified by amplifier 4-2, whose output is inputted to light modulator 5-2. On the other hand, the unmodulated light from light emitting device 7-2 in terminal station 2-1 is transmitted to light modulator 5-2 in terminal station 2-2 via fiber 7 for unmodulated light transmission and the rest of this unmodulated light is all modulated by light modulator 5-2 and sent to fiber 1-2 for information signal light transmission.
JP16108179A 1979-12-12 1979-12-12 Light transmission system Pending JPS5684047A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16108179A JPS5684047A (en) 1979-12-12 1979-12-12 Light transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16108179A JPS5684047A (en) 1979-12-12 1979-12-12 Light transmission system

Publications (1)

Publication Number Publication Date
JPS5684047A true JPS5684047A (en) 1981-07-09

Family

ID=15728256

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16108179A Pending JPS5684047A (en) 1979-12-12 1979-12-12 Light transmission system

Country Status (1)

Country Link
JP (1) JPS5684047A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5329003A (en) * 1976-08-30 1978-03-17 Nec Corp Optical fiber trans mission system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5329003A (en) * 1976-08-30 1978-03-17 Nec Corp Optical fiber trans mission system

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