JPS64918A - Optical modulating element - Google Patents
Optical modulating elementInfo
- Publication number
- JPS64918A JPS64918A JP15546387A JP15546387A JPS64918A JP S64918 A JPS64918 A JP S64918A JP 15546387 A JP15546387 A JP 15546387A JP 15546387 A JP15546387 A JP 15546387A JP S64918 A JPS64918 A JP S64918A
- Authority
- JP
- Japan
- Prior art keywords
- state
- superconductor
- light
- modulating element
- optical modulating
- 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 obtain an optical modulating element of simple constitution which operates even if waveguides are not used by utilizing the correspondence of the Meissner type continuous change in the mixing region of a class 2 superconductor to an optical change of refractive index to constitute the optical modulating element.
CONSTITUTION: The class 2 superconductor is in the Meissner state if an impressed magnetic field H is at H<Hc1. Incident light 100 which is an electromagnetic wave cannot, therefore, infiltrate into the inside of the superconductor 10 and is reflected by which reflected light 110 is maximized and turned off. The mixed state is attained when the magnetic field H is increased to Hc1<H<Hc2. Then, the incident light 100 begins to infiltrate into the inside of the superconductor and transmitted light 120 appears at this time. The reflected light 110 decreases gradually. The normal conducting state is attained and the Meissner characteristic disappears gradually when the impressed magnetic field is further increased to Hc2<H. The reflected light 110 is then minimized and the transmitted light 120 is maximized and is turned on. The incident light is thus modulated in intensity by using the continuous change of the quantity of the transmitted light or the quantity of the reflected light between the on state and the off state. The optical modulating element of the simple constitution is thereby obtd.
COPYRIGHT: (C)1989,JPO&Japio
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15546387A JPS64918A (en) | 1987-06-24 | 1987-06-24 | Optical modulating element |
DE3817568A DE3817568C2 (en) | 1987-05-25 | 1988-05-24 | Optical modulator with a superconducting oxide |
US07/431,231 US5110792A (en) | 1987-05-25 | 1989-11-03 | Method and apparatus of optical modulation using superconductive oxide material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15546387A JPS64918A (en) | 1987-06-24 | 1987-06-24 | Optical modulating element |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH01918A JPH01918A (en) | 1989-01-05 |
JPS64918A true JPS64918A (en) | 1989-01-05 |
Family
ID=15606600
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15546387A Pending JPS64918A (en) | 1987-05-25 | 1987-06-24 | Optical modulating element |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS64918A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4512169A (en) * | 1982-02-15 | 1985-04-23 | Mitsubishi Denki Kabushiki Kaisha | Automatic plate thickness control device |
-
1987
- 1987-06-24 JP JP15546387A patent/JPS64918A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4512169A (en) * | 1982-02-15 | 1985-04-23 | Mitsubishi Denki Kabushiki Kaisha | Automatic plate thickness control device |
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