JPS56111338A - Distribution type optical network - Google Patents

Distribution type optical network

Info

Publication number
JPS56111338A
JPS56111338A JP1355280A JP1355280A JPS56111338A JP S56111338 A JPS56111338 A JP S56111338A JP 1355280 A JP1355280 A JP 1355280A JP 1355280 A JP1355280 A JP 1355280A JP S56111338 A JPS56111338 A JP S56111338A
Authority
JP
Japan
Prior art keywords
loop
station
lambda3
optical network
lambda1
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
JP1355280A
Other languages
Japanese (ja)
Other versions
JPS6031131B2 (en
Inventor
Kazunori Iwasaki
Tomoo Kokkyo
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP55013552A priority Critical patent/JPS6031131B2/en
Publication of JPS56111338A publication Critical patent/JPS56111338A/en
Publication of JPS6031131B2 publication Critical patent/JPS6031131B2/en
Expired 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computing Systems (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Small-Scale Networks (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE:To improve reliability and to increase the volume of communication by composing a network with loops and by transmitting data in wavelength-multiplex mode. CONSTITUTION:For transmission from station S1 to station S6, whether a loop is formed between S1 and S6 is formed is judged first. The figure showns that there is not any loop, so a station common between the loop including S1 and that including S6 is found. The loop of wavelength lambda1 includes S1 and S5 and the loop of lambda3 includes S5 and S6, so that S5 is performed by using the loop of lambda1, and S5 changes the loop of the signal from lambda1 to lambda3 to transmit it to target station S6 via the loop of lambda3.
JP55013552A 1980-02-08 1980-02-08 distributed optical network Expired JPS6031131B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55013552A JPS6031131B2 (en) 1980-02-08 1980-02-08 distributed optical network

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55013552A JPS6031131B2 (en) 1980-02-08 1980-02-08 distributed optical network

Publications (2)

Publication Number Publication Date
JPS56111338A true JPS56111338A (en) 1981-09-03
JPS6031131B2 JPS6031131B2 (en) 1985-07-20

Family

ID=11836325

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55013552A Expired JPS6031131B2 (en) 1980-02-08 1980-02-08 distributed optical network

Country Status (1)

Country Link
JP (1) JPS6031131B2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6148255A (en) * 1984-08-14 1986-03-08 Nec Corp Composite exchange system
JPS62265831A (en) * 1986-05-13 1987-11-18 Ricoh Co Ltd Intelligence type head end and its communication method
JPS63256033A (en) * 1987-03-26 1988-10-24 アメリカン　テレフォン　アンド　テレグラフ　カムパニー Communication network
US4871225A (en) * 1984-08-24 1989-10-03 Pacific Bell Fiber optic distribution network
JPH0746183A (en) * 1993-07-28 1995-02-14 Nec Corp Communication network line relieving device
US5448389A (en) * 1989-12-22 1995-09-05 British Telecommunications Public Limited Company Passive optical ring network

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6148255A (en) * 1984-08-14 1986-03-08 Nec Corp Composite exchange system
US4871225A (en) * 1984-08-24 1989-10-03 Pacific Bell Fiber optic distribution network
JPS62265831A (en) * 1986-05-13 1987-11-18 Ricoh Co Ltd Intelligence type head end and its communication method
JPS63256033A (en) * 1987-03-26 1988-10-24 アメリカン　テレフォン　アンド　テレグラフ　カムパニー Communication network
US5448389A (en) * 1989-12-22 1995-09-05 British Telecommunications Public Limited Company Passive optical ring network
JPH0746183A (en) * 1993-07-28 1995-02-14 Nec Corp Communication network line relieving device

Also Published As

Publication number Publication date
JPS6031131B2 (en) 1985-07-20

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