JPS5669603A - Manufacture of waveguide type directional photocoupler - Google Patents
Manufacture of waveguide type directional photocouplerInfo
- Publication number
- JPS5669603A JPS5669603A JP14666779A JP14666779A JPS5669603A JP S5669603 A JPS5669603 A JP S5669603A JP 14666779 A JP14666779 A JP 14666779A JP 14666779 A JP14666779 A JP 14666779A JP S5669603 A JPS5669603 A JP S5669603A
- Authority
- JP
- Japan
- Prior art keywords
- light
- photocoupler
- light waveguide
- parts
- optical crystal
- 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 form the titled photocoupler by which the light transmission line can be switched efficiently, by forming a thin metallic diffusion layer in the photocoupling part, in case of manufacturing the photocoupler, for which the light waveguide line consisting of the metallic diffusion layer. CONSTITUTION:Ti layers 2, 3, 4, and 5, 6, 7 are provided on the optical crystal 1 such as lithium niobate, and a photocoupler is manufactured by diffusing Ti into the optical crystal 1 by mans of heating, and making it a light waveguide line. In case of said manufacturing method, thickness T1 of the Ti layers 3, 6 which are made coupling parts between both the light waveguide lines is made thinner than thickness T2 of other parts (the parts which are separated from each other, drawing a curve as they go away from the coupling parts) (2, 4 and 5, 7). Accordingly, when it is heated, the increase amount of refractive index of the optical crystal 1 becomes small in the coupling part, the effusion of light from one light waveguide line to the other light waveguide line becomes large, and the light switching efficiency can be elevated, shortening the coupling length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14666779A JPS5669603A (en) | 1979-11-13 | 1979-11-13 | Manufacture of waveguide type directional photocoupler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14666779A JPS5669603A (en) | 1979-11-13 | 1979-11-13 | Manufacture of waveguide type directional photocoupler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5669603A true JPS5669603A (en) | 1981-06-11 |
Family
ID=15412887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14666779A Pending JPS5669603A (en) | 1979-11-13 | 1979-11-13 | Manufacture of waveguide type directional photocoupler |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5669603A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01321408A (en) * | 1988-06-24 | 1989-12-27 | Nippon Telegr & Teleph Corp <Ntt> | Semiconductor waveguide |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5167148A (en) * | 1974-12-09 | 1976-06-10 | Mitsubishi Electric Corp | HIKARIHOKOSEIKETSUGOKI |
| JPS5299840A (en) * | 1976-02-17 | 1977-08-22 | Nippon Telegr & Teleph Corp <Ntt> | Directional coupler |
-
1979
- 1979-11-13 JP JP14666779A patent/JPS5669603A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5167148A (en) * | 1974-12-09 | 1976-06-10 | Mitsubishi Electric Corp | HIKARIHOKOSEIKETSUGOKI |
| JPS5299840A (en) * | 1976-02-17 | 1977-08-22 | Nippon Telegr & Teleph Corp <Ntt> | Directional coupler |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01321408A (en) * | 1988-06-24 | 1989-12-27 | Nippon Telegr & Teleph Corp <Ntt> | Semiconductor waveguide |
| JP2873303B2 (en) * | 1988-06-24 | 1999-03-24 | 日本電信電話株式会社 | Semiconductor optical waveguide |
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