JPS57186856A - Single line bi-direction optical transmitting device - Google Patents

Single line bi-direction optical transmitting device

Info

Publication number
JPS57186856A
JPS57186856A JP56072799A JP7279981A JPS57186856A JP S57186856 A JPS57186856 A JP S57186856A JP 56072799 A JP56072799 A JP 56072799A JP 7279981 A JP7279981 A JP 7279981A JP S57186856 A JPS57186856 A JP S57186856A
Authority
JP
Japan
Prior art keywords
branching device
line
branch
photodetector
branching
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
JP56072799A
Other languages
Japanese (ja)
Inventor
Fumihiko Sato
Yoshitaka Tsukamoto
Masahiro Nonaka
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.)
Omron Corp
Original Assignee
Tateisi Electronics Co
Omron Tateisi Electronics Co
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 Tateisi Electronics Co, Omron Tateisi Electronics Co filed Critical Tateisi Electronics Co
Priority to JP56072799A priority Critical patent/JPS57186856A/en
Publication of JPS57186856A publication Critical patent/JPS57186856A/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
    • H04B10/25—Arrangements specific to fibre transmission
    • H04B10/2589—Bidirectional transmission

Abstract

PURPOSE:To use a Y-branching device for a single line bi-direction transmission line, by setting a branching ratio of the Y-branching device larger in the photodetector side than in the light emitting element side. CONSTITUTION:Between branch lines of fiber branching devices 15, 16 manufactured so as to constitute a Y-branching line, a branch line coupled with light emitting elements 11, 14 is formed to a smaller diameter than a branch line coupled with photodetectors 12, 13. According to this constitution, a light beam of wavelength lambda1 emitted by the element 11 is made incident from one branch line of the branching device 15, reaches the branching device 16 through an optical fiber 17 from its base line, and is transmitted to the photodetector 12 from the branch line of a large diameter. The branching device 16 is set so that the extent of branch to the photodetector 12 side becomes larger than the extent of branch of the element 14 side, therefore, the greater part of the wavelength lambda1 is made incident to the photodetector 12. A light beam of wavelength lambda2 from the element 14 is also transmitted to the photodetector 13 through the branching device 16, the fiber 17 and the branching device 15 in the same way. In this way, single line bi-direction transmission of a light beam is executed.
JP56072799A 1981-05-13 1981-05-13 Single line bi-direction optical transmitting device Pending JPS57186856A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56072799A JPS57186856A (en) 1981-05-13 1981-05-13 Single line bi-direction optical transmitting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56072799A JPS57186856A (en) 1981-05-13 1981-05-13 Single line bi-direction optical transmitting device

Publications (1)

Publication Number Publication Date
JPS57186856A true JPS57186856A (en) 1982-11-17

Family

ID=13499794

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56072799A Pending JPS57186856A (en) 1981-05-13 1981-05-13 Single line bi-direction optical transmitting device

Country Status (1)

Country Link
JP (1) JPS57186856A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5975221A (en) * 1982-10-22 1984-04-27 Toshiba Eng Co Ltd Optical fiber transmission line
EP1111420A2 (en) * 1999-12-20 2001-06-27 Talltec Sensors S.A. Optical connector device
US10631666B2 (en) 2005-09-12 2020-04-28 Rtc Industries, Inc. Product management display system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5975221A (en) * 1982-10-22 1984-04-27 Toshiba Eng Co Ltd Optical fiber transmission line
EP1111420A2 (en) * 1999-12-20 2001-06-27 Talltec Sensors S.A. Optical connector device
EP1111420A3 (en) * 1999-12-20 2001-09-19 Talltec Sensors S.A. Optical connector device
US10631666B2 (en) 2005-09-12 2020-04-28 Rtc Industries, Inc. Product management display system

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