JPS57138232A - Time-division optical transmission system - Google Patents

Time-division optical transmission system

Info

Publication number
JPS57138232A
JPS57138232A JP56023932A JP2393281A JPS57138232A JP S57138232 A JPS57138232 A JP S57138232A JP 56023932 A JP56023932 A JP 56023932A JP 2393281 A JP2393281 A JP 2393281A JP S57138232 A JPS57138232 A JP S57138232A
Authority
JP
Japan
Prior art keywords
optical
light
optical fiber
terminal
passed
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
JP56023932A
Other languages
Japanese (ja)
Inventor
Masaaki Mori
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP56023932A priority Critical patent/JPS57138232A/en
Publication of JPS57138232A publication Critical patent/JPS57138232A/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
    • H04B10/27—Arrangements for networking
    • H04B10/278—Bus-type networks

Abstract

PURPOSE:To improve the efficiency of optical and electric mutual conversion by inhibiting the repetition of the conversion in the middle of transmission by transmitting information with light by an optical switch element through a time- division optical tramsmission system which uses optical fibers, and by receiving it by branching. CONSTITUTION:An optical switch element consists of an ultrasonicwave deflector AO and rod lenses RL1 and RL2, and light from an optical fiber (a) is normally passed through an optical fiber (b), but passed through an optical fiber (c) when a high-frequency input is applied. Light from a light source 11 is made incident to an optical fiber UF1 and is branched through the half-mirror UM1 of the line adapter TS1 of the 1st terminal equipment to be photodetected by a photodiode UP1, whose output is received by a communication control part UI/F1 through a receiving line UR1X to detect a time slot and a synchronizing signal. When the time slot 1 of the terminal arrives, a modulated signal is applied to an optical switch US1 through a transmitting line UT1X to modulated and transmit the light passed through the half-mirror UM1 to the next terminal, thus repeating reception and transmission one after another until a specified terminal.
JP56023932A 1981-02-20 1981-02-20 Time-division optical transmission system Pending JPS57138232A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56023932A JPS57138232A (en) 1981-02-20 1981-02-20 Time-division optical transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56023932A JPS57138232A (en) 1981-02-20 1981-02-20 Time-division optical transmission system

Publications (1)

Publication Number Publication Date
JPS57138232A true JPS57138232A (en) 1982-08-26

Family

ID=12124295

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56023932A Pending JPS57138232A (en) 1981-02-20 1981-02-20 Time-division optical transmission system

Country Status (1)

Country Link
JP (1) JPS57138232A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6374238A (en) * 1986-09-11 1988-04-04 エイ・ティ・アンド・ティ・コーポレーション Communication system for multiple users
WO2009022672A1 (en) * 2007-08-10 2009-02-19 Nec Corporation Optical data bus and optical data transmission system using the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6374238A (en) * 1986-09-11 1988-04-04 エイ・ティ・アンド・ティ・コーポレーション Communication system for multiple users
WO2009022672A1 (en) * 2007-08-10 2009-02-19 Nec Corporation Optical data bus and optical data transmission system using the same

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