JPS55125741A - Optical fiber transmission system - Google Patents

Optical fiber transmission system

Info

Publication number
JPS55125741A
JPS55125741A JP3274279A JP3274279A JPS55125741A JP S55125741 A JPS55125741 A JP S55125741A JP 3274279 A JP3274279 A JP 3274279A JP 3274279 A JP3274279 A JP 3274279A JP S55125741 A JPS55125741 A JP S55125741A
Authority
JP
Japan
Prior art keywords
light
point
loop
delivered
optical
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
JP3274279A
Other languages
Japanese (ja)
Other versions
JPS6141183B2 (en
Inventor
Kenzo Ono
Tsutomu Asabe
Hirokazu Yoshino
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP3274279A priority Critical patent/JPS55125741A/en
Publication of JPS55125741A publication Critical patent/JPS55125741A/en
Publication of JPS6141183B2 publication Critical patent/JPS6141183B2/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
    • H04B10/27—Arrangements for networking
    • 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
    • H04B10/27—Arrangements for networking
    • H04B10/275—Ring-type networks

Landscapes

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

Abstract

PURPOSE:To prevent the interference to the transmission signal with loop feedback signal and the deterioration of S/N and to increase the reliability of the entire unit, by turning off the optical switch at the time slot in the station itself and turning on the optical switch with the time slot of other stations. CONSTITUTION:When the data is delivered from the point 100, the inputted 17 information is delivered on the optical loop 50 mixed with the light from the input terminal 11b to the time slot TST100. The light on the loop 50 returns to the input terminal 10a of the point 100 through the output terminals 21a and 31a of the four- terminal type photo branch unit, photo switch and optical fiber from the input terminals 20a and 30a of the points 200 and 300 and light is going to propagate to the point 200, but the optical switch 10 is controlled via the control line 16a in the control circuit 16 at TST100 and light is interrupted, then the light delivered from the point 100 is not propagated more than one loop of the loop 50. Next, the light delivered from the point 100 is divided at the four-terminal type optical branch unit and received and demodulated since the optical switch at the points 100 and 200 is conductive.
JP3274279A 1979-03-20 1979-03-20 Optical fiber transmission system Granted JPS55125741A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3274279A JPS55125741A (en) 1979-03-20 1979-03-20 Optical fiber transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3274279A JPS55125741A (en) 1979-03-20 1979-03-20 Optical fiber transmission system

Publications (2)

Publication Number Publication Date
JPS55125741A true JPS55125741A (en) 1980-09-27
JPS6141183B2 JPS6141183B2 (en) 1986-09-12

Family

ID=12367283

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3274279A Granted JPS55125741A (en) 1979-03-20 1979-03-20 Optical fiber transmission system

Country Status (1)

Country Link
JP (1) JPS55125741A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5983426A (en) * 1982-11-05 1984-05-14 Nec Corp Optical network system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5983426A (en) * 1982-11-05 1984-05-14 Nec Corp Optical network system

Also Published As

Publication number Publication date
JPS6141183B2 (en) 1986-09-12

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