JPS55161203A - Photocoupling device - Google Patents
Photocoupling deviceInfo
- Publication number
- JPS55161203A JPS55161203A JP6819379A JP6819379A JPS55161203A JP S55161203 A JPS55161203 A JP S55161203A JP 6819379 A JP6819379 A JP 6819379A JP 6819379 A JP6819379 A JP 6819379A JP S55161203 A JPS55161203 A JP S55161203A
- Authority
- JP
- Japan
- Prior art keywords
- photocoupling
- light
- photsensitive
- refractive index
- thin film
- 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
- Optical Integrated Circuits (AREA)
Abstract
PURPOSE:To arbitrary adjust the phase constant between optical guides by providing a photsensitive thin film on one optical guide in the photocoupling part of the photocoupling device or in proximity thereto and forming the grating image which periodically changes the refractive index of light. CONSTITUTION:A photosensitive film 4 is provided on one optical guide 3 in the coupling place L or in extreme proximity thereto as shown in the figure. The control light from the outside is radiated to this photsensitive thin film 4 to expose the grating image corresponding to the control light to this. Arrangement is so made that the refractive index of light at this portion is periodically changed. These enable the arbitrary adjustment of the phase matching conditions between the optical guides 2 and 3 and the enhancement of the photocoupling efficiency.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6819379A JPS55161203A (en) | 1979-05-31 | 1979-05-31 | Photocoupling device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6819379A JPS55161203A (en) | 1979-05-31 | 1979-05-31 | Photocoupling device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55161203A true JPS55161203A (en) | 1980-12-15 |
Family
ID=13366696
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6819379A Pending JPS55161203A (en) | 1979-05-31 | 1979-05-31 | Photocoupling device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55161203A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63223712A (en) * | 1987-03-13 | 1988-09-19 | Hitachi Ltd | Light guide and its production |
US6226428B1 (en) | 1997-07-30 | 2001-05-01 | Nec Corporation | Optical multiplexer/demultiplexer with optical waveguides and a diffraction grating |
WO2002088838A2 (en) * | 2001-04-30 | 2002-11-07 | Raytheon Company | Apparatus for separating and/or combining optical signals, and methods of making and operating it |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5421360A (en) * | 1977-07-18 | 1979-02-17 | Mitsubishi Electric Corp | Photo directional coupler |
-
1979
- 1979-05-31 JP JP6819379A patent/JPS55161203A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5421360A (en) * | 1977-07-18 | 1979-02-17 | Mitsubishi Electric Corp | Photo directional coupler |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63223712A (en) * | 1987-03-13 | 1988-09-19 | Hitachi Ltd | Light guide and its production |
US6226428B1 (en) | 1997-07-30 | 2001-05-01 | Nec Corporation | Optical multiplexer/demultiplexer with optical waveguides and a diffraction grating |
WO2002088838A2 (en) * | 2001-04-30 | 2002-11-07 | Raytheon Company | Apparatus for separating and/or combining optical signals, and methods of making and operating it |
WO2002088838A3 (en) * | 2001-04-30 | 2003-12-31 | Raytheon Co | Apparatus for separating and/or combining optical signals, and methods of making and operating it |
KR100737048B1 (en) * | 2001-04-30 | 2007-07-09 | 레이던 컴퍼니 | Apparatus for separating and/or combining optical signals, and methods of making and operating it |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ATE135840T1 (en) | MAKEUP DISPLAY WITH WAVEGUIDE | |
GB2194072B (en) | Athermalised optical beam expander | |
JPS5391728A (en) | Correction device for uneven intensity of illumination for variable multiplication copier | |
JPS55161203A (en) | Photocoupling device | |
JPS6462602A (en) | Bent waveguide for optical integrated circuit | |
JPS5392126A (en) | Exposure regulator for variable magnification copying machine | |
JPS55142365A (en) | Copying apparatus | |
JPS5714811A (en) | Lens for copying machine | |
JPS5792348A (en) | Slit switching mechanism | |
JPS52117135A (en) | Electrophotographic copier | |
JPS56114962A (en) | Light beam exposure device | |
JPS5691256A (en) | Copying apparatus | |
JPS52156633A (en) | Enlarging optical device | |
JPS5421747A (en) | Optical distributor | |
JPS5441723A (en) | Optical device for copier | |
JPS53110861A (en) | Variable magnification recording method using laser | |
JPS53115245A (en) | Photo coupler | |
JPS5374026A (en) | Variable magnification lens device | |
JPS54154317A (en) | Aperture device of copying machines | |
JPS5675674A (en) | Exposure projecting device | |
JPS56133758A (en) | Exposure control device of electrophotographic copier | |
JPS57192975A (en) | Electrophotographic copying machine | |
JPS5370833A (en) | Light distributor | |
JPS574071A (en) | Recorder | |
JPS52127346A (en) | Directive optical coupler |