JPS5473062A - Thin-film mirror type optical branch line - Google Patents
Thin-film mirror type optical branch lineInfo
- Publication number
- JPS5473062A JPS5473062A JP14027877A JP14027877A JPS5473062A JP S5473062 A JPS5473062 A JP S5473062A JP 14027877 A JP14027877 A JP 14027877A JP 14027877 A JP14027877 A JP 14027877A JP S5473062 A JPS5473062 A JP S5473062A
- Authority
- JP
- Japan
- Prior art keywords
- branch
- light
- thru
- optical guide
- thin
- 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 reduce loss at branch points by specifying the refractive indices of light at branch portions. CONSTITUTION:The refractive indices of light of the branch portions 21 thru 2n between the optical guide 1 formed through thermal diffusion of Ti in a ferrodielectric substrate composed of LiNbO3, etc. and branch lines 11 thru 1n are made larger than the reflective indices of light of the optical guide 1 and branch lines 11 thru 1n by increasing the rate of thermal diffusion of Ti. Then, at the time when the light I entered to the left end of the optical guide 1 is branched to reflected light R and transmitted light T at the first branch point D1 and the transmitted light T is further subsequently branched to reflected light and transmitted light at the second, third branch points D2, D3, the loss at the branch points D1 thru D3 becomes small. The similar effect is also obtained if the substrate is made of LiTaO3 and the branch parts and optical guide portions are formed of Nb.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14027877A JPS5473062A (en) | 1977-11-22 | 1977-11-22 | Thin-film mirror type optical branch line |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14027877A JPS5473062A (en) | 1977-11-22 | 1977-11-22 | Thin-film mirror type optical branch line |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5473062A true JPS5473062A (en) | 1979-06-12 |
Family
ID=15265048
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14027877A Pending JPS5473062A (en) | 1977-11-22 | 1977-11-22 | Thin-film mirror type optical branch line |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5473062A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62206503A (en) * | 1986-03-06 | 1987-09-11 | Nec Corp | Y-shaped optical confluencing and multiplexing circuit |
JPS6348535A (en) * | 1986-08-19 | 1988-03-01 | Nippon Telegr & Teleph Corp <Ntt> | Optical switch |
JPS6363007A (en) * | 1986-09-03 | 1988-03-19 | Fujitsu Ltd | Waveguide type branching circuit |
JP2011064727A (en) * | 2009-09-15 | 2011-03-31 | Nitto Denko Corp | Optical waveguide with light-emitting element and optical touch panel with the same |
JP2011128321A (en) * | 2009-12-17 | 2011-06-30 | Nitto Denko Corp | Optical waveguide with light emitting element, and optical touch panel with the same |
-
1977
- 1977-11-22 JP JP14027877A patent/JPS5473062A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62206503A (en) * | 1986-03-06 | 1987-09-11 | Nec Corp | Y-shaped optical confluencing and multiplexing circuit |
JPS6348535A (en) * | 1986-08-19 | 1988-03-01 | Nippon Telegr & Teleph Corp <Ntt> | Optical switch |
JPS6363007A (en) * | 1986-09-03 | 1988-03-19 | Fujitsu Ltd | Waveguide type branching circuit |
JP2011064727A (en) * | 2009-09-15 | 2011-03-31 | Nitto Denko Corp | Optical waveguide with light-emitting element and optical touch panel with the same |
JP2011128321A (en) * | 2009-12-17 | 2011-06-30 | Nitto Denko Corp | Optical waveguide with light emitting element, and optical touch panel with the same |
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