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JPS5694326A - Optical switch - Google Patents

Optical switch

Info

Publication number
JPS5694326A
JPS5694326AJP17100779AJP17100779AJPS5694326AJP S5694326 AJPS5694326 AJP S5694326AJP 17100779 AJP17100779 AJP 17100779AJP 17100779 AJP17100779 AJP 17100779AJP S5694326 AJPS5694326 AJP S5694326A
Authority
JP
Japan
Prior art keywords
faces
polarization
electric field
crystal plate
axis
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
JP17100779A
Other languages
Japanese (ja)
Inventor
Masataka Shirasaki
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu LtdfiledCriticalFujitsu Ltd
Priority to JP17100779ApriorityCriticalpatent/JPS5694326A/en
Publication of JPS5694326ApublicationCriticalpatent/JPS5694326A/en
Pendinglegal-statusCriticalCurrent

Links

Abstract

PURPOSE: To obtain an optical switch of low inversion electric field for the purpose of spontaneous polarization by using a crystal plate of Bi4Ti3O12 cut out at a specific cutting angle as an essential component, and selectively extracting polarized light according to the electric field directions to be applied to the crystal plate.
CONSTITUTION: The faces A, B of a single crystal plate 8 of Bi4Ti3O12 are made parallel to the axis (a) to provide inclination of 45° to the axes (b), (c). The faces C, D are made perpendicular to the cut faces A, B and are intersected with the axis (a) at 45°. The faces E, F are intersected orthogonally with the cut faces AWD, respectively. The direction of an electric field is controlled by entering the light 9 having the plane of polarization intersecting orthogonally with the faces A, B of the plate 8 of the Bi4Ti3O12 cut out in this way, in a direction assuming 45° to the axis (a) on the faces (b), (c), to the single crystal plate 8 and phase plate 10, whereby the phase differences of the two planes of polarization of the exit light is moved 180° and the planes of polarization are selected by using an analyzer 2. Thereby, the optical switch of a low inversion electric field for the purpose of spontaneous polarization is obtained.
COPYRIGHT: (C)1981,JPO&Japio
JP17100779A1979-12-281979-12-28Optical switchPendingJPS5694326A (en)

Priority Applications (1)

Application NumberPriority DateFiling DateTitle
JP17100779AJPS5694326A (en)1979-12-281979-12-28Optical switch

Applications Claiming Priority (1)

Application NumberPriority DateFiling DateTitle
JP17100779AJPS5694326A (en)1979-12-281979-12-28Optical switch

Publications (1)

Publication NumberPublication Date
JPS5694326Atrue JPS5694326A (en)1981-07-30

Family

ID=15915364

Family Applications (1)

Application NumberTitlePriority DateFiling Date
JP17100779APendingJPS5694326A (en)1979-12-281979-12-28Optical switch

Country Status (1)

CountryLink
JP (1)JPS5694326A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
JPS6159312A (en)*1984-08-301986-03-26Ricoh Co Ltd optical element
US5812304A (en)*1995-08-291998-09-22Fujitsu LimitedFaraday rotator which generates a uniform magnetic field in a magnetic optical element
US5867300A (en)*1996-03-011999-02-02Fujitsu LimitedVariable optical attenuator which applies a magnetic field to a faraday element to rotate the polarization of a light signal
US5889609A (en)*1992-07-311999-03-30Fujitsu LimitedOptical attenuator
US6018411A (en)*1996-11-292000-01-25Fujitsu LimitedOptical device utilizing magneto-optical effect
US6441955B1 (en)1998-02-272002-08-27Fujitsu LimitedLight wavelength-multiplexing systems
US6496300B2 (en)1998-02-272002-12-17Fujitsu LimitedOptical amplifier

Cited By (14)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
JPS6159312A (en)*1984-08-301986-03-26Ricoh Co Ltd optical element
US5889609A (en)*1992-07-311999-03-30Fujitsu LimitedOptical attenuator
US6018412A (en)*1992-07-312000-01-25Fujitsu LimitedOptical attenuator
US6275323B1 (en)1992-07-312001-08-14Fujitsu LimitedOptical attenuator
US5812304A (en)*1995-08-291998-09-22Fujitsu LimitedFaraday rotator which generates a uniform magnetic field in a magnetic optical element
US6570699B2 (en)1996-03-012003-05-27Fujitsu LimitedVariable optical attenuator which applies a magnetic field to a Faraday element to rotate the polarization of a light signal
US5867300A (en)*1996-03-011999-02-02Fujitsu LimitedVariable optical attenuator which applies a magnetic field to a faraday element to rotate the polarization of a light signal
US5973821A (en)*1996-03-011999-10-26Fujitsu LimitedVariable optical attenuator which applies a magnetic field to a faraday element to rotate the polarization of light signal
US6333806B1 (en)1996-03-012001-12-25Fujitsu LimitedVariable optical attenuator which applies a magnetic field to a Faraday element to rotate the polarization of a light signal
US6717713B2 (en)1996-03-012004-04-06Fujitsu LimitedVariable optical attenuator which applies a magnetic field to a faraday element to rotate the polarization of a light signal
US6018411A (en)*1996-11-292000-01-25Fujitsu LimitedOptical device utilizing magneto-optical effect
US6496300B2 (en)1998-02-272002-12-17Fujitsu LimitedOptical amplifier
US6441955B1 (en)1998-02-272002-08-27Fujitsu LimitedLight wavelength-multiplexing systems
US6919987B2 (en)1998-02-272005-07-19Fujitsu LimitedLight wavelength-multiplexing systems

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