JPS565515A - Film thickness converter - Google Patents
Film thickness converterInfo
- Publication number
- JPS565515A JPS565515A JP8112379A JP8112379A JPS565515A JP S565515 A JPS565515 A JP S565515A JP 8112379 A JP8112379 A JP 8112379A JP 8112379 A JP8112379 A JP 8112379A JP S565515 A JPS565515 A JP S565515A
- Authority
- JP
- Japan
- Prior art keywords
- film
- thickness
- film thickness
- converter
- grating
- 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
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/2804—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers
- G02B6/2817—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers using reflective elements to split or combine optical signals
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
- Optical Integrated Circuits (AREA)
Abstract
PURPOSE:To enable connection while controlling the spreading of light in the horizontal direction by employing a square distribution of refractive index in the width direction and using optical systems of continued film thicknesses in the thickness direction. CONSTITUTION:A thin film optical transmission line 2 formed with a grating 1 on the surface is placed on a substrate 3, and this and optical fibers 4, 5, 6, are connected respectively by film thickness converters 7, 8, 9. The film thickness converters 7, 8, 9 are capable of converting spot light sources to parallel rays. Light 10 propagating in the optical fiber 4 is reduced down to several mum in the thickness direction by the film thickness converter 7 and in the horizontal direction it is converted to parallel rays of a width several mm.. These are then branched to two by the grating 1. The one ray 11 is coupled to the optical fiber 5 by the film thickness converter 8 and the other ray 12 advances rectilinear and is coupled to the optical fiber 6 by the film converter 9. Dependig upon the period and thickness of this grating 1, branch ratio and wavelength characteristics may be changed as desired. Hence, the spreading in the horizontal direction of the light coupling to the thin film optical transmission line may be changed freely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8112379A JPS565515A (en) | 1979-06-26 | 1979-06-26 | Film thickness converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8112379A JPS565515A (en) | 1979-06-26 | 1979-06-26 | Film thickness converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS565515A true JPS565515A (en) | 1981-01-21 |
Family
ID=13737604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8112379A Pending JPS565515A (en) | 1979-06-26 | 1979-06-26 | Film thickness converter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS565515A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6243609A (en) * | 1985-08-22 | 1987-02-25 | Matsushita Electric Ind Co Ltd | Optical circuit element |
| JP2002350635A (en) * | 2001-05-22 | 2002-12-04 | Fujitsu Ltd | Method for arranging thin film element, optical circuit device and optoelectronic device |
-
1979
- 1979-06-26 JP JP8112379A patent/JPS565515A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6243609A (en) * | 1985-08-22 | 1987-02-25 | Matsushita Electric Ind Co Ltd | Optical circuit element |
| JP2002350635A (en) * | 2001-05-22 | 2002-12-04 | Fujitsu Ltd | Method for arranging thin film element, optical circuit device and optoelectronic device |
| JP4678985B2 (en) * | 2001-05-22 | 2011-04-27 | 富士通株式会社 | Manufacturing method of optical circuit device |
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