JPS6451678A - Superconducting optical memory device - Google Patents
Superconducting optical memory deviceInfo
- Publication number
- JPS6451678A JPS6451678A JP62209607A JP20960787A JPS6451678A JP S6451678 A JPS6451678 A JP S6451678A JP 62209607 A JP62209607 A JP 62209607A JP 20960787 A JP20960787 A JP 20960787A JP S6451678 A JPS6451678 A JP S6451678A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- magnetic field
- rings
- state
- superconducting
- 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
Landscapes
- Superconductor Devices And Manufacturing Methods Thereof (AREA)
Abstract
PURPOSE:To obtain an optical memory device having no restriction of erasing frequency, by providing a recording means which records data by cutting off a permanent current flowing in a ring composed of superconducting material by irradiating a photo spot, and a reading means which reads data by detecting the current flowing in the ring as the change in Kerr rotation angle or Faraday rotation angle. CONSTITUTION:By a temperature controller 2, the temperature of superconducting rings 2 is raised higher than or equal to the critical temperature. Then, magnetic field is applied to the superconducting rings 1, by a magnetic field generating equipment 3. In this state, the temperature is reduced lower than or equal to the critical temperature by the temperature controller 2. The state of superconducting rings changes from a normally conductive state to a superconductive state. In this state, the magnetic field generated by the magnetic field generating equipment 3 is cut off. In the superconducting rings, a permanent current to compensate the cut-off magnetic field flows. In order to record data, the temperature of the ring is raised higher than or equal to the critical temperature by increasing the output power of a light source 5, and the permanent current of the rings is cut off. In order to regenerate the information, the current quantity of the rings is checked by a photo detector 6, and the recorded data is read out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62209607A JPS6451678A (en) | 1987-08-24 | 1987-08-24 | Superconducting optical memory device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62209607A JPS6451678A (en) | 1987-08-24 | 1987-08-24 | Superconducting optical memory device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6451678A true JPS6451678A (en) | 1989-02-27 |
Family
ID=16575608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62209607A Pending JPS6451678A (en) | 1987-08-24 | 1987-08-24 | Superconducting optical memory device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6451678A (en) |
-
1987
- 1987-08-24 JP JP62209607A patent/JPS6451678A/en active Pending
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