JPS5456462A - Optical isolator - Google Patents
Optical isolatorInfo
- Publication number
- JPS5456462A JPS5456462A JP12233177A JP12233177A JPS5456462A JP S5456462 A JPS5456462 A JP S5456462A JP 12233177 A JP12233177 A JP 12233177A JP 12233177 A JP12233177 A JP 12233177A JP S5456462 A JPS5456462 A JP S5456462A
- Authority
- JP
- Japan
- Prior art keywords
- yoke
- ferromagnetic material
- magnetic path
- magnet
- faraday rotation
- 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
Links
Abstract
PURPOSE: To achieve smaller size, lighter weight and higher performance by using a permanent magnet for magnetization of a ferromagnetic material for Faraday rotation and magnetically connecting the same with a yoke thereby forming the closed magnetic path of bottomed cylinder form.
CONSTITUTION: A ferromagnetic material 4 of column form for Faraday rotation are so provided as to contact the end parts of columnar form parts 16, 17. Hence, the magnetic flux is transmitted from a magnet 14 via the central columnar form part 17 of the yoke 13 to the ferromagnetic material 4 to saturation-magnetize said material and returns via the yoke 12 to the magnet 14 thereby forming a closed magnetic path. At this time, the thickness and value of magnetization of the magnetic material 4 are so selected as to give Faraday rotation of 45°. Since the Faraday rotor by this constitution forms a closed magnetic path, it is magnetically stable and the optical isolator of small size, light weight and high performance may be obtained
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12233177A JPS5456462A (en) | 1977-10-14 | 1977-10-14 | Optical isolator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12233177A JPS5456462A (en) | 1977-10-14 | 1977-10-14 | Optical isolator |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5456462A true JPS5456462A (en) | 1979-05-07 |
Family
ID=14833314
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12233177A Pending JPS5456462A (en) | 1977-10-14 | 1977-10-14 | Optical isolator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5456462A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57185013A (en) * | 1981-05-08 | 1982-11-15 | Hoya Corp | Optical isolator |
JPS58219523A (en) * | 1982-06-15 | 1983-12-21 | Ko Taketomi | Method for controlling and stabilizing quantity of transmitted light by using double reflection in magnetic field of magnetic fluid, optical memory and its device |
US4475359A (en) * | 1981-10-27 | 1984-10-09 | Tokyo Shibaura Denki Kabushiki Kaisha | Air conditioning apparatus |
JPS61114420U (en) * | 1984-12-27 | 1986-07-19 | ||
JPS61114421U (en) * | 1984-12-27 | 1986-07-19 | ||
JPS61116321U (en) * | 1984-12-28 | 1986-07-23 |
-
1977
- 1977-10-14 JP JP12233177A patent/JPS5456462A/en active Pending
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57185013A (en) * | 1981-05-08 | 1982-11-15 | Hoya Corp | Optical isolator |
US4475359A (en) * | 1981-10-27 | 1984-10-09 | Tokyo Shibaura Denki Kabushiki Kaisha | Air conditioning apparatus |
JPS58219523A (en) * | 1982-06-15 | 1983-12-21 | Ko Taketomi | Method for controlling and stabilizing quantity of transmitted light by using double reflection in magnetic field of magnetic fluid, optical memory and its device |
JPS61114420U (en) * | 1984-12-27 | 1986-07-19 | ||
JPS61114421U (en) * | 1984-12-27 | 1986-07-19 | ||
JPS61116321U (en) * | 1984-12-28 | 1986-07-23 | ||
JPH0123127Y2 (en) * | 1984-12-28 | 1989-07-17 |
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