JPS57142613A - Wave combining device of optical communication - Google Patents
Wave combining device of optical communicationInfo
- Publication number
- JPS57142613A JPS57142613A JP2854581A JP2854581A JPS57142613A JP S57142613 A JPS57142613 A JP S57142613A JP 2854581 A JP2854581 A JP 2854581A JP 2854581 A JP2854581 A JP 2854581A JP S57142613 A JPS57142613 A JP S57142613A
- Authority
- JP
- Japan
- Prior art keywords
- grating
- wavelengths
- beams
- diffracted
- lambda3
- 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
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/10—Beam splitting or combining systems
- G02B27/1086—Beam splitting or combining systems operating by diffraction only
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/10—Beam splitting or combining systems
- G02B27/1006—Beam splitting or combining systems for splitting or combining different wavelengths
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Semiconductor Lasers (AREA)
Abstract
PURPOSE:To simplify constitution and to reduce costs by performing fixing and combining of the oscillation wavelengths of plural semiconductor lasers with one plane of diffraction grating. CONSTITUTION:The beams emitted from semiconductor lasers 1-3 are paralleled by collimators 11-13 and the parallel beams are made incident at incident angles theta1-theta3 to a plane difraction grating 20. If arrangement is so made that the secondarily diffracted beams of wavelengths lambda1-lambda3 diffracted by the grating 20 are fed back to the lasers 1-3, the oscillation wavelengths of the respective semiconductor lasers are fixed at lambda1-lambda3. At this time, the primarily diffracted beams of the wavelengths lambda1-lambda3 diffracted by the grating 20 advance all in the direction normal to the grating 20 irrespectively of the wavelength and therefore the beams of all the wavelengths are condensed at one point with a condensing optical system 21 and are fed into an optical fiber 22.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2854581A JPS57142613A (en) | 1981-02-28 | 1981-02-28 | Wave combining device of optical communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2854581A JPS57142613A (en) | 1981-02-28 | 1981-02-28 | Wave combining device of optical communication |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57142613A true JPS57142613A (en) | 1982-09-03 |
Family
ID=12251626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2854581A Pending JPS57142613A (en) | 1981-02-28 | 1981-02-28 | Wave combining device of optical communication |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57142613A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62134987A (en) * | 1985-12-09 | 1987-06-18 | Matsushita Electric Ind Co Ltd | Light source for wavelength multiplex optical communication |
| JPH01175280A (en) * | 1987-12-29 | 1989-07-11 | Sharp Corp | Semiconductor laser array device |
-
1981
- 1981-02-28 JP JP2854581A patent/JPS57142613A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62134987A (en) * | 1985-12-09 | 1987-06-18 | Matsushita Electric Ind Co Ltd | Light source for wavelength multiplex optical communication |
| JPH01175280A (en) * | 1987-12-29 | 1989-07-11 | Sharp Corp | Semiconductor laser array device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4701005A (en) | Light beam combining method and apparatus | |
| SE8002907L (en) | OPTICAL POWER DIVISION | |
| EP1122578A3 (en) | Light distributing apparatus | |
| TW358167B (en) | Method of forming a grating in an optical waveguide | |
| JPH01500375A (en) | Optical signal processing method and optical element | |
| GB1470810A (en) | Device for sampling laser beams | |
| JPS574007A (en) | Multiple wavelength light communication system | |
| JPS57142613A (en) | Wave combining device of optical communication | |
| JPS5737893A (en) | Semiconductor laser | |
| EP0298490A3 (en) | Semiconductor laser optical system | |
| JPS5726720A (en) | Spectral detector | |
| GB1044193A (en) | Improved particle accelerator | |
| JPS5767910A (en) | Optical synthesizing and branching device | |
| EP0063126B1 (en) | Optical transmission systems | |
| JPS56153304A (en) | Wavelength multiplex communication wave combining device using concave surface composite diffraction grating | |
| JPS5723906A (en) | Broad-band optical branching filter | |
| JPS57129409A (en) | Optical communication wave synthesizer using biaxial crystal | |
| JPS57151911A (en) | Wavelength multiplex optical communication multiplexing and demultiplexing | |
| JPS6423221A (en) | Multiplexing/demultiplexing unit and multiplexer/ demultiplexer for coherent light communication | |
| JPS5515144A (en) | Photo circuit element | |
| JPS566126A (en) | Multiple diffraction type spectroscope | |
| JPS61223810A (en) | Optical wavelength multiplexer/demultiplexer | |
| JPS56110908A (en) | Wave combination and distribution method of optical signal for optical multiplex communication | |
| JPS57124707A (en) | Control system for polarizing direction for semiconductor laser oscillating beam | |
| JPS5690642A (en) | Optical communication system |