JPS55111920A - Light control device - Google Patents

Light control device

Info

Publication number
JPS55111920A
JPS55111920A JP1876079A JP1876079A JPS55111920A JP S55111920 A JPS55111920 A JP S55111920A JP 1876079 A JP1876079 A JP 1876079A JP 1876079 A JP1876079 A JP 1876079A JP S55111920 A JPS55111920 A JP S55111920A
Authority
JP
Japan
Prior art keywords
light
waves
fiber
ultrasonic
coupling
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
JP1876079A
Other languages
Japanese (ja)
Other versions
JPS6144295B2 (en
Inventor
Hideo Segawa
Jiro Koyama
Hiroshi Nishihara
Masamitsu Masuda
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 JP1876079A priority Critical patent/JPS55111920A/en
Priority to US06/122,823 priority patent/US4312562A/en
Priority to DE19803006102 priority patent/DE3006102A1/en
Publication of JPS55111920A publication Critical patent/JPS55111920A/en
Publication of JPS6144295B2 publication Critical patent/JPS6144295B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE:To control branching, coupling, etc. of light with good coupling efficiency with a simple constitution by changing the propagation constants of the light waves of optical fibers by the mutual action of light waves and ultrasonic waves. CONSTITUTION:A pair of main and sub optical fibers 21, 22 are disposed in extreme proximity within a range of a coupling length L, to form the coupling part 23 in which light waves are well transmitted by solid or liquid of large refractive index and ultrasonic waves are difficult to transmit. If the output of the ultrasonic waves outputted by an ultrasonic wave transducer 20 which is provided in the specified position of the fiber 21 and does not transmit ultrasonic waves to ahead the coupling part 23 is changed by an oscillator 24, the propagation constant of the light waves of the fiber 21 owing to the mutual action of the light waves and ultrasonic walves changes according to the coupling length L and the light controllings such as modulation and branching of the light waves to the fiber 22 in case the light p incident to the fiber 21 is single light and fetching of only the specific frequency or mode light in the case of multiple waves are accomplished with good coupling efficiency by the simple constitution of not requiring accuracy.
JP1876079A 1979-02-19 1979-02-20 Light control device Granted JPS55111920A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP1876079A JPS55111920A (en) 1979-02-20 1979-02-20 Light control device
US06/122,823 US4312562A (en) 1979-02-19 1980-02-19 Optical control device
DE19803006102 DE3006102A1 (en) 1979-02-19 1980-02-19 OPTICAL CONTROL DEVICE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1876079A JPS55111920A (en) 1979-02-20 1979-02-20 Light control device

Publications (2)

Publication Number Publication Date
JPS55111920A true JPS55111920A (en) 1980-08-29
JPS6144295B2 JPS6144295B2 (en) 1986-10-02

Family

ID=11980590

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1876079A Granted JPS55111920A (en) 1979-02-19 1979-02-20 Light control device

Country Status (1)

Country Link
JP (1) JPS55111920A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2276466A (en) * 1991-09-16 1994-09-28 British Telecomm Optical grating device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02147297U (en) * 1989-05-17 1990-12-13

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2276466A (en) * 1991-09-16 1994-09-28 British Telecomm Optical grating device
GB2276466B (en) * 1991-09-16 1995-04-26 British Telecomm Optical grating device

Also Published As

Publication number Publication date
JPS6144295B2 (en) 1986-10-02

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