JPS5745517A - Optical isolator - Google Patents

Optical isolator

Info

Publication number
JPS5745517A
JPS5745517A JP12059280A JP12059280A JPS5745517A JP S5745517 A JPS5745517 A JP S5745517A JP 12059280 A JP12059280 A JP 12059280A JP 12059280 A JP12059280 A JP 12059280A JP S5745517 A JPS5745517 A JP S5745517A
Authority
JP
Japan
Prior art keywords
prism
rotated
magnetic field
light
polarized
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
JP12059280A
Other languages
Japanese (ja)
Inventor
Hideo Kuwabara
Masaaki Takahashi
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 Ltd filed Critical Fujitsu Ltd
Priority to JP12059280A priority Critical patent/JPS5745517A/en
Publication of JPS5745517A publication Critical patent/JPS5745517A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/09—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on magneto-optical elements, e.g. exhibiting Faraday effect
    • G02F1/093—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on magneto-optical elements, e.g. exhibiting Faraday effect used as non-reciprocal devices, e.g. optical isolators, circulators

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)

Abstract

PURPOSE:To eliminate the influence from the outside and to obtain stable characteristics by applying a magnetic field to be applied to a prism of a Faraday rotation material from a magnetic field generating part having magnetic poles provided oppositely in a closed magnetic path. CONSTITUTION:A yoke 7 is so formed as to form a closed magnetic field, and permanent magnets 8 and 9 are provided on the inner side thereof by opposing different magnetic poles. The light incident from an arrow S direction is polarized by a double refractive prism 11, is rotated 45 deg. by a Faraday rotator 10, is returned to the original by a 1/2 wavelength plate 12 and is emitted from a double refractive prism 13 to an arrow T direction. Conversely, the light incident from the T direction is polarized by the prism 13, is rotated 45 deg. of plane of polarization by the 1/2 wavelength plate and is further rotated 45 deg. by the Farady rotator to the light rotated 90 deg.. This light is intercepted by the prism 11. Thereby, the influence from the outside is eliminated, and the stable characteristics are obtained.
JP12059280A 1980-09-02 1980-09-02 Optical isolator Pending JPS5745517A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12059280A JPS5745517A (en) 1980-09-02 1980-09-02 Optical isolator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12059280A JPS5745517A (en) 1980-09-02 1980-09-02 Optical isolator

Publications (1)

Publication Number Publication Date
JPS5745517A true JPS5745517A (en) 1982-03-15

Family

ID=14790074

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12059280A Pending JPS5745517A (en) 1980-09-02 1980-09-02 Optical isolator

Country Status (1)

Country Link
JP (1) JPS5745517A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59176721A (en) * 1983-03-25 1984-10-06 Fujitsu Ltd Optical isolator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59176721A (en) * 1983-03-25 1984-10-06 Fujitsu Ltd Optical isolator

Similar Documents

Publication Publication Date Title
US5087984A (en) Optical isolators employing oppositely signed faraday rotating materials
US5790299A (en) Optical isolator employing a cadmium-zinc-tellurium composition
GB1363885A (en) Light beam polarization modulator
ATE27203T1 (en) MAGNETO-OPTICAL CONVERTER.
US4856878A (en) Magnetic configuration for Faraday rotators
US5029953A (en) Ultraviolet optical isolator utilizing the KDP-isomorphs
GB1339846A (en) Apparatus for the optical qualities of a laser beam
JPS5478153A (en) Light isolator
EP0757275A4 (en) Optical isolator
JPS5745517A (en) Optical isolator
US4840464A (en) Optical isolator employing a germanium-arsenic-selenium composition
GB1115679A (en) Method and apparatus for the measurement of magnetic circular dichroism
JPS57188014A (en) Optical switch
GB1038329A (en) Devices for producing polarized light
JPS6488402A (en) Optical waveguide device
GB1494001A (en) Non-return faraday effect system and its application to a laser amplifier
JPS57168221A (en) Optical switch
JPS57185014A (en) Optical isolator
JPS5456462A (en) Optical isolator
JPS5720702A (en) Optical switch
JPS5749917A (en) Epitaxial-film faraday rotator
JPS5616950A (en) Optical information read-in unit
JPH04115221A (en) Faraday rotating element
JPS56168625A (en) Memory type magnetooptic thin film switch
JPS56137327A (en) Optical circulator