JPS5646210A - Optical switch - Google Patents
Optical switchInfo
- Publication number
- JPS5646210A JPS5646210A JP12081479A JP12081479A JPS5646210A JP S5646210 A JPS5646210 A JP S5646210A JP 12081479 A JP12081479 A JP 12081479A JP 12081479 A JP12081479 A JP 12081479A JP S5646210 A JPS5646210 A JP S5646210A
- Authority
- JP
- Japan
- Prior art keywords
- polarized light
- light
- incident
- prism
- optical fiber
- 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.)
- Granted
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
- G02F1/13—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 liquid crystals, e.g. single liquid crystal display cells
- G02F1/1326—Liquid crystal optical waveguides or liquid crystal cells specially adapted for gating or modulating between optical waveguides
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Liquid Crystal (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
Abstract
PURPOSE:To obtain a perfect-operation optical switch that permits nearyl 100% incident light to pass through liquid crystal, by providing a prism, lens, half- wavelength plate, glass plate, and anisotropic crystal. CONSTITUTION:Parallel light passed through rod lens 21 is separated through anisotropic crystal 71 into polarized light P parallel to a paper face and perpendicular polarized light and polarized light S is converted by half-wavelength plate 81 into polarized light P, which strikes prism 31. On the other hand, polarized light P, having its optical path bent by anisotropic crystal 71, is incident to prism 31 by way of glass plate 91. Thus, polarized light of light incident to prism 31 all becomes polarized light P. While no voltage is applied to clear electrode 5, the light incident to liquid crystal 4 is totallt reflected. Then, polarized light P having passed through half-wavelength plate 81 and polarized light P having passed through glass plate 91 are both led to multimode optical fiber I3 and almost all incident light from multimode optical fiber I1 is taken out of optical fiber I3. Once a voltage is applied, it is led out of optical fiber I4.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54120814A JPS5810731B2 (en) | 1979-09-21 | 1979-09-21 | light switch |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54120814A JPS5810731B2 (en) | 1979-09-21 | 1979-09-21 | light switch |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5646210A true JPS5646210A (en) | 1981-04-27 |
JPS5810731B2 JPS5810731B2 (en) | 1983-02-26 |
Family
ID=14795627
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP54120814A Expired JPS5810731B2 (en) | 1979-09-21 | 1979-09-21 | light switch |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5810731B2 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5854322A (en) * | 1981-09-07 | 1983-03-31 | エヌ・ベ−・フイリツプス・フル−イランペンフアブリケン | Light switch |
JPS58106526A (en) * | 1981-12-19 | 1983-06-24 | Nippon Telegr & Teleph Corp <Ntt> | Optical branching circuit |
JPH0227311A (en) * | 1988-07-15 | 1990-01-30 | Matsushita Electric Ind Co Ltd | Optical terminal station equipment |
US6437762B1 (en) | 1995-01-11 | 2002-08-20 | William A. Birdwell | Dynamic diffractive optical transform |
WO2005040902A1 (en) * | 2003-10-17 | 2005-05-06 | Mbda Uk Limited | Switchable coupling |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55156915A (en) * | 1979-02-21 | 1980-12-06 | Sperry Rand Corp | Liquid crystal switching matrix |
-
1979
- 1979-09-21 JP JP54120814A patent/JPS5810731B2/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55156915A (en) * | 1979-02-21 | 1980-12-06 | Sperry Rand Corp | Liquid crystal switching matrix |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5854322A (en) * | 1981-09-07 | 1983-03-31 | エヌ・ベ−・フイリツプス・フル−イランペンフアブリケン | Light switch |
JPS58106526A (en) * | 1981-12-19 | 1983-06-24 | Nippon Telegr & Teleph Corp <Ntt> | Optical branching circuit |
JPS6235657B2 (en) * | 1981-12-19 | 1987-08-03 | Nippon Denshin Denwa Kk | |
JPH0227311A (en) * | 1988-07-15 | 1990-01-30 | Matsushita Electric Ind Co Ltd | Optical terminal station equipment |
US6437762B1 (en) | 1995-01-11 | 2002-08-20 | William A. Birdwell | Dynamic diffractive optical transform |
US7009581B2 (en) | 1995-01-11 | 2006-03-07 | Birdwell William A | Dynamic diffractive optical transform |
WO2005040902A1 (en) * | 2003-10-17 | 2005-05-06 | Mbda Uk Limited | Switchable coupling |
US7428036B2 (en) | 2003-10-17 | 2008-09-23 | Mbda Uk Limited | Liquid crystal switchable coupler for coupling at least two unpolarized light inputs |
Also Published As
Publication number | Publication date |
---|---|
JPS5810731B2 (en) | 1983-02-26 |
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