JPS5584920A - Photo branching filter - Google Patents

Photo branching filter

Info

Publication number
JPS5584920A
JPS5584920A JP16063678A JP16063678A JPS5584920A JP S5584920 A JPS5584920 A JP S5584920A JP 16063678 A JP16063678 A JP 16063678A JP 16063678 A JP16063678 A JP 16063678A JP S5584920 A JPS5584920 A JP S5584920A
Authority
JP
Japan
Prior art keywords
acousto
optic element
modulated
oscillators
optical fiber
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
JP16063678A
Other languages
Japanese (ja)
Inventor
Hideo Segawa
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 JP16063678A priority Critical patent/JPS5584920A/en
Publication of JPS5584920A publication Critical patent/JPS5584920A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To change the coupling relation of the modulated light from an acousto- optic element and optical fiber array and perform photo branching stably with good accuracy by making the frequencies of the carriers of the information applied to the acousto-optic element variable. CONSTITUTION:The respective oscillation frequencies f1-f3 of oscillators OSC1- OSC3 may be arbitrarily selected respectively by frequency selectors FS1-FS3. When the oscillator OSC1 is oscillated by the frequency f1, the transmission signal S1 is light modulated by the acousto-optic element AO and the modulated beam I1 thereof is introduced into an optical fiber OF1. If the oscillation frequencies of the three oscillators are changed, the transmission signals S1-S3 may be led into arbitrary optical fibers. In this way, the signals of multichannels may be simultaneously sent to the transmission system for optical communication simultaneously through optical fibers. Since photo branching is accomplished by making use of the acousto- optic element, the accuracy becomes high, the life becomes longer and the device may be made simpler.
JP16063678A 1978-12-20 1978-12-20 Photo branching filter Pending JPS5584920A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16063678A JPS5584920A (en) 1978-12-20 1978-12-20 Photo branching filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16063678A JPS5584920A (en) 1978-12-20 1978-12-20 Photo branching filter

Publications (1)

Publication Number Publication Date
JPS5584920A true JPS5584920A (en) 1980-06-26

Family

ID=15719205

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16063678A Pending JPS5584920A (en) 1978-12-20 1978-12-20 Photo branching filter

Country Status (1)

Country Link
JP (1) JPS5584920A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5925517U (en) * 1982-08-05 1984-02-17 三菱レイヨン株式会社 optical splitter
WO2000003292A3 (en) * 1998-07-10 2000-04-27 Endovasix Inc Apparatus for delivering radiation energy

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50104943A (en) * 1974-01-22 1975-08-19
JPS5149049A (en) * 1974-10-24 1976-04-27 Matsushita Electric Industrial Co Ltd Hikarihenkosochi

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50104943A (en) * 1974-01-22 1975-08-19
JPS5149049A (en) * 1974-10-24 1976-04-27 Matsushita Electric Industrial Co Ltd Hikarihenkosochi

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5925517U (en) * 1982-08-05 1984-02-17 三菱レイヨン株式会社 optical splitter
WO2000003292A3 (en) * 1998-07-10 2000-04-27 Endovasix Inc Apparatus for delivering radiation energy

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