JPS5681802A - Light modulating device - Google Patents

Light modulating device

Info

Publication number
JPS5681802A
JPS5681802A JP16009879A JP16009879A JPS5681802A JP S5681802 A JPS5681802 A JP S5681802A JP 16009879 A JP16009879 A JP 16009879A JP 16009879 A JP16009879 A JP 16009879A JP S5681802 A JPS5681802 A JP S5681802A
Authority
JP
Japan
Prior art keywords
diffraction gratings
transmitted
light
optical fiber
voice
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
JP16009879A
Other languages
Japanese (ja)
Other versions
JPS584322B2 (en
Inventor
Yasuhiro Torii
Yoshihiko Mizushima
Seiichi Shirai
Toshiro Oga
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.)
NTT Inc
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP54160098A priority Critical patent/JPS584322B2/en
Publication of JPS5681802A publication Critical patent/JPS5681802A/en
Publication of JPS584322B2 publication Critical patent/JPS584322B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Optical Communication System (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Mechanical Light Control Or Optical Switches (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)

Abstract

PURPOSE:To convert acoustic wave signals directly to light signals by using two diffraction gratings. CONSTITUTION:When voice causes a diaphragm 12 to vibrate and displace, diffraction gratings 14, 15 displace relatively in the arranging direction of the stripes thereof. The light transmitted through an optical fiber 16 is paralleled by a ''Selfoc lens '' 18 and is lighted to the diffraction gratings 14, 15 and the ligth 22 diffracted by the diffraction gratings 14, 15 is condensed by a ''Selfoc lens '' 19 and is transmitted to an optical fiber 17. At this time, the intensity of the light diffracted by the diffraction gratings 14, 15 and transmitted by the optical fiber 17 is modulated by the relative displacement of the diffraction gratings 14, 15. In this way, the voice signal of the diaphragm 12 vibrated by the voice of acoustic waves is directly transmitted as light signal.
JP54160098A 1979-12-10 1979-12-10 light modulator Expired JPS584322B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54160098A JPS584322B2 (en) 1979-12-10 1979-12-10 light modulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54160098A JPS584322B2 (en) 1979-12-10 1979-12-10 light modulator

Publications (2)

Publication Number Publication Date
JPS5681802A true JPS5681802A (en) 1981-07-04
JPS584322B2 JPS584322B2 (en) 1983-01-26

Family

ID=15707799

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54160098A Expired JPS584322B2 (en) 1979-12-10 1979-12-10 light modulator

Country Status (1)

Country Link
JP (1) JPS584322B2 (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59216102A (en) * 1983-05-24 1984-12-06 Matsushita Electric Ind Co Ltd Microphone
US7134343B2 (en) 2003-07-25 2006-11-14 Kabushiki Kaisha Toshiba Opto-acoustoelectric device and methods for analyzing mechanical vibration and sound
US7293463B2 (en) 2004-04-30 2007-11-13 Kabushiki Kaisha Toshiba Acoustoelectric conversion device
JP2008258928A (en) * 2007-04-04 2008-10-23 Sony Corp microphone
JP2008261684A (en) * 2007-04-11 2008-10-30 Sony Corp Vibration detector
US8139227B2 (en) 2006-05-04 2012-03-20 The Board Of Trustees Of The Leland Stanford Junior University Method using asymmetric optical resonances
US8160406B2 (en) 2005-04-29 2012-04-17 The Board Of Trustees Of The Leland Stanford Junior University Acoustic sensor with at least one photonic crystal slab
US8249400B2 (en) 2007-01-09 2012-08-21 The Board Of Trustees Of The Leland Stanford Junior University Optical structure on an optical fiber and method of fabrication
US8542956B2 (en) 2010-03-15 2013-09-24 The Board Of Trustees Of The Leland Stanford Junior University Optical-fiber-compatible acoustic sensor
US11215481B2 (en) 2018-03-23 2022-01-04 The Board Of Trustees Of The Leland Stanford Junior University Diaphragm-based fiber acoustic sensor
US12504320B2 (en) 2022-04-05 2025-12-23 The Board Of Trustees Of The Leland Stanford Junior University Self-aligning optical acoustic sensors

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003047131A1 (en) * 2001-11-26 2003-06-05 National Institute Of Advanced Industrial Science And Technology Communication system by terminal with no power supply

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59216102A (en) * 1983-05-24 1984-12-06 Matsushita Electric Ind Co Ltd Microphone
US7134343B2 (en) 2003-07-25 2006-11-14 Kabushiki Kaisha Toshiba Opto-acoustoelectric device and methods for analyzing mechanical vibration and sound
US7293463B2 (en) 2004-04-30 2007-11-13 Kabushiki Kaisha Toshiba Acoustoelectric conversion device
US8331741B2 (en) 2005-04-29 2012-12-11 The Board Of Trustees Of The Leland Stanford Junior University Acoustic sensor with at least one photonic crystal structure
US8160406B2 (en) 2005-04-29 2012-04-17 The Board Of Trustees Of The Leland Stanford Junior University Acoustic sensor with at least one photonic crystal slab
US8537368B2 (en) 2006-05-04 2013-09-17 The Board Of Trustees Of The Leland Stanford Junior University Method of detecting an acceleration
US8139227B2 (en) 2006-05-04 2012-03-20 The Board Of Trustees Of The Leland Stanford Junior University Method using asymmetric optical resonances
US8373865B2 (en) 2006-05-04 2013-02-12 The Board Of Trustees Of The Leland Stanford Junior University Method of detecting a topology of a reflective surface
US8548283B2 (en) 2007-01-09 2013-10-01 The Board Of Trustees Of The Leland Stanford Junior University Optical system having a photonic crystal structure and method of fabrication
US8249400B2 (en) 2007-01-09 2012-08-21 The Board Of Trustees Of The Leland Stanford Junior University Optical structure on an optical fiber and method of fabrication
JP2008258928A (en) * 2007-04-04 2008-10-23 Sony Corp microphone
JP2008261684A (en) * 2007-04-11 2008-10-30 Sony Corp Vibration detector
US8542956B2 (en) 2010-03-15 2013-09-24 The Board Of Trustees Of The Leland Stanford Junior University Optical-fiber-compatible acoustic sensor
US8897610B2 (en) 2010-03-15 2014-11-25 The Board Of Trustees Of The Leland Stanford Junior University Method of fabricating an optical-fiber-compatible sensor
US9702755B2 (en) 2010-03-15 2017-07-11 The Board Of Trustees Of The Leland Stanford Junior University Optical-fiber-compatible sensor
US11215481B2 (en) 2018-03-23 2022-01-04 The Board Of Trustees Of The Leland Stanford Junior University Diaphragm-based fiber acoustic sensor
US11629979B2 (en) 2018-03-23 2023-04-18 The Board Of Trustees Of The Leland Stanford Junior University Diaphragm-based fiber acoustic sensor
US12504320B2 (en) 2022-04-05 2025-12-23 The Board Of Trustees Of The Leland Stanford Junior University Self-aligning optical acoustic sensors

Also Published As

Publication number Publication date
JPS584322B2 (en) 1983-01-26

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