JPS57186855A - Optical communication system - Google Patents

Optical communication system

Info

Publication number
JPS57186855A
JPS57186855A JP56071640A JP7164081A JPS57186855A JP S57186855 A JPS57186855 A JP S57186855A JP 56071640 A JP56071640 A JP 56071640A JP 7164081 A JP7164081 A JP 7164081A JP S57186855 A JPS57186855 A JP S57186855A
Authority
JP
Japan
Prior art keywords
optical signal
optical
transmission line
loop
sent out
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
JP56071640A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6142978B2 (enrdf_load_stackoverflow
Inventor
Junichi Yugawa
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 JP56071640A priority Critical patent/JPS57186855A/ja
Publication of JPS57186855A publication Critical patent/JPS57186855A/ja
Publication of JPS6142978B2 publication Critical patent/JPS6142978B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0227—Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0227—Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
    • H04J14/0241—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths
    • H04J14/0242—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON
    • H04J14/0245—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON for downstream transmission, e.g. optical line terminal [OLT] to ONU
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0227—Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
    • H04J14/0241—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths
    • H04J14/0242—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON
    • H04J14/0249—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON for upstream transmission, e.g. ONU-to-OLT or ONU-to-ONU
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0278—WDM optical network architectures
    • H04J14/0283—WDM ring architectures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0287—Protection in WDM systems
    • H04J14/0289—Optical multiplex section protection
    • H04J14/0291—Shared protection at the optical multiplex section (1:1, n:m)
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0287—Protection in WDM systems
    • H04J14/0293—Optical channel protection
    • H04J14/0295—Shared protection at the optical channel (1:1, n:m)

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Small-Scale Networks (AREA)
  • Optical Communication System (AREA)
  • Light Guides In General And Applications Therefor (AREA)
JP56071640A 1981-05-13 1981-05-13 Optical communication system Granted JPS57186855A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56071640A JPS57186855A (en) 1981-05-13 1981-05-13 Optical communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56071640A JPS57186855A (en) 1981-05-13 1981-05-13 Optical communication system

Publications (2)

Publication Number Publication Date
JPS57186855A true JPS57186855A (en) 1982-11-17
JPS6142978B2 JPS6142978B2 (enrdf_load_stackoverflow) 1986-09-25

Family

ID=13466437

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56071640A Granted JPS57186855A (en) 1981-05-13 1981-05-13 Optical communication system

Country Status (1)

Country Link
JP (1) JPS57186855A (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61127238A (ja) * 1984-11-26 1986-06-14 Nec Corp 光伝送システム
JPH02246532A (ja) * 1989-03-20 1990-10-02 Furukawa Electric Co Ltd:The 光伝送方法
JPH03127524A (ja) * 1989-10-13 1991-05-30 Tokyo Electric Power Co Inc:The 双方向光データ伝送システム
US6414768B1 (en) 1998-03-20 2002-07-02 Fujitsu Limited Optical communication system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006051616A1 (ja) * 2004-11-15 2006-05-18 Media Global Links Co., Ltd. 双方向光通信システム

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61127238A (ja) * 1984-11-26 1986-06-14 Nec Corp 光伝送システム
JPH02246532A (ja) * 1989-03-20 1990-10-02 Furukawa Electric Co Ltd:The 光伝送方法
JPH03127524A (ja) * 1989-10-13 1991-05-30 Tokyo Electric Power Co Inc:The 双方向光データ伝送システム
US6414768B1 (en) 1998-03-20 2002-07-02 Fujitsu Limited Optical communication system

Also Published As

Publication number Publication date
JPS6142978B2 (enrdf_load_stackoverflow) 1986-09-25

Similar Documents

Publication Publication Date Title
JPS57157661A (en) Transmission line switching system
JPS645138A (en) Ring constitution system for line concentrator
JPS57186855A (en) Optical communication system
US5594581A (en) Low loss optical transmission/monitoring path selection in redundant equipment terminals
SE9601945D0 (sv) Anordning och förfarande i ett telesystem
JPS5741056A (en) Fault time bypass system of loop transmission line
FI99255B (fi) Järjestely optisten linjojen kytkemiseksi laajakaistaiseen viestintäkeskukseen
JPS57176850A (en) Transmitting system
JPS56156037A (en) Optical signal switching system
JPS5742248A (en) Switching device for communication system
SU1022324A1 (ru) Устройство восстановлени св зи системы передачи с круговым трактом
JPS60229433A (ja) 双方向光通信方式
JPS56158570A (en) Facsimile dispatching broadcast communication system
JPS56149132A (en) Transmission system utilizing stand-by transmission line effectively
JPS57157205A (en) Optical switch circuit for loop way node
JPS5678267A (en) Light exchange system
JPS57111147A (en) Station to be supervised, having folding function in optical loop transmission network
JPS62236229A (ja) 光バイパス装置
JPS58101536A (ja) 環状光通信装置
JPS56119557A (en) Communication mode switching system
JPS57160231A (en) In-use and stand-by switching device
JPS57132455A (en) Communication controlling system
JPS648748A (en) Line concentration device for duplicated loop type local area network
JPS6429131A (en) Transmission/reception antenna sharing system
JPS57148435A (en) Optical data way system