JPS57148435A - Optical data way system - Google Patents

Optical data way system

Info

Publication number
JPS57148435A
JPS57148435A JP56033808A JP3380881A JPS57148435A JP S57148435 A JPS57148435 A JP S57148435A JP 56033808 A JP56033808 A JP 56033808A JP 3380881 A JP3380881 A JP 3380881A JP S57148435 A JPS57148435 A JP S57148435A
Authority
JP
Japan
Prior art keywords
signal
optical
circuit
wavelength
inputted
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
JP56033808A
Other languages
Japanese (ja)
Inventor
Kuniyoshi Konishi
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 JP56033808A priority Critical patent/JPS57148435A/en
Publication of JPS57148435A publication Critical patent/JPS57148435A/en
Pending 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
    • H04J14/0278—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
    • H04J14/0226—Fixed carrier allocation, e.g. according to service
    • 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
    • H04J14/0246—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 using one wavelength per ONU

Abstract

PURPOSE:To transmit other kinds of data normally even if an electric circuit in charge of some kind of data has a fault, by using optical fibers as a loop circuit, and sending various kinds of data through the optical fibers on wavelength- multiplex basis. CONSTITUTION:In data stations provided at adequate points on a loop circuit 110 which uses optical fibers, a multiplexed optical signal inputted from the circuit 110 is separated by optical wavelengths through an optical branching filter 209; a signal with wavelength I1 is inputted as a digital signal to a station controller 200, a signal with wavelength I2 is inputted to a telephone circuit switching device 201 as an audio signal, and a signal with wavelength I3 is inputted as a video signal to an ITV controller 202. The devices 200-202 convert the input optical signals into electric signals to generate and supply a control signal 208 to a telephone set, a TV set, etc., and also convert electric signals into optical signals with wavelengths I1-I3 to multiplex and send the optical signals to the circuit 110 through an optical branching filter 210. The device 200 sends the signal 208 to the devices 201 and 202 to perform switching control and also control data transmission between a computer and a terminal.
JP56033808A 1981-03-11 1981-03-11 Optical data way system Pending JPS57148435A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56033808A JPS57148435A (en) 1981-03-11 1981-03-11 Optical data way system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56033808A JPS57148435A (en) 1981-03-11 1981-03-11 Optical data way system

Publications (1)

Publication Number Publication Date
JPS57148435A true JPS57148435A (en) 1982-09-13

Family

ID=12396771

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56033808A Pending JPS57148435A (en) 1981-03-11 1981-03-11 Optical data way system

Country Status (1)

Country Link
JP (1) JPS57148435A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0221735A (en) * 1988-07-11 1990-01-24 Anritsu Corp Optical fiber communication equipment

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5675735A (en) * 1979-11-22 1981-06-23 Mitsubishi Electric Corp Optical data way device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5675735A (en) * 1979-11-22 1981-06-23 Mitsubishi Electric Corp Optical data way device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0221735A (en) * 1988-07-11 1990-01-24 Anritsu Corp Optical fiber communication equipment

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