JPS644706A - Mode splitter - Google Patents
Mode splitterInfo
- Publication number
- JPS644706A JPS644706A JP16039087A JP16039087A JPS644706A JP S644706 A JPS644706 A JP S644706A JP 16039087 A JP16039087 A JP 16039087A JP 16039087 A JP16039087 A JP 16039087A JP S644706 A JPS644706 A JP S644706A
- Authority
- JP
- Japan
- Prior art keywords
- waveguides
- betajb
- betaja
- betaib
- betaia
- 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 enable efficient mode sepn. by forming two waveguides which are bisected with a tapered coupling part changed in thickness to a tapered shape as a boundary and setting the propagation constants and incident angles of these waveguides so as to satisfy prescribed conditions. CONSTITUTION:The two two-dimensional waveguides A, B bisected by the tapered coupling part C the thickness of which changes to a tapered shape in the thickness direction (z-axis direction) are formed. The respective propagation constants betaiA, betaiB, betajA, betajB in the waveguides A, B are so set as to satisfy the conditions betaiA>betaiB, betajA>betajB at the time of propagation in the same direction of at least two modes i, j (where i, j are integers) and the incident angle alphaA to the waveguide A is so set as to satisfy the conditions sin<-1>(betaiB/betaiA)>alphaA> sin<-1>(betajB/betajA). While the light wave of the mode i is, therefore, refracted in the waveguide B, the light wave of the mode j is totally reflected at the boundary C. The plural modes propagating in the plane type light guide are thereby efficiently separated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16039087A JPS644706A (en) | 1987-06-26 | 1987-06-26 | Mode splitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16039087A JPS644706A (en) | 1987-06-26 | 1987-06-26 | Mode splitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS644706A true JPS644706A (en) | 1989-01-09 |
Family
ID=15713923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16039087A Pending JPS644706A (en) | 1987-06-26 | 1987-06-26 | Mode splitter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS644706A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5208800A (en) * | 1990-04-13 | 1993-05-04 | Ricoh Company, Ltd. | Mode splitter and magneto-optical signal detection device |
| US5418765A (en) * | 1991-04-19 | 1995-05-23 | Ricoh Company, Ltd. | Apparatus for recording and reproducing optical information having an optical waveguide |
| US5509094A (en) * | 1993-03-16 | 1996-04-16 | Sharp Kabushiki Kaisha | Mode splitter and a magneto-optical disk pick-up device having the mode splitter |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS48102650A (en) * | 1972-04-10 | 1973-12-24 |
-
1987
- 1987-06-26 JP JP16039087A patent/JPS644706A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS48102650A (en) * | 1972-04-10 | 1973-12-24 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5208800A (en) * | 1990-04-13 | 1993-05-04 | Ricoh Company, Ltd. | Mode splitter and magneto-optical signal detection device |
| US5418765A (en) * | 1991-04-19 | 1995-05-23 | Ricoh Company, Ltd. | Apparatus for recording and reproducing optical information having an optical waveguide |
| US5509094A (en) * | 1993-03-16 | 1996-04-16 | Sharp Kabushiki Kaisha | Mode splitter and a magneto-optical disk pick-up device having the mode splitter |
| US5652737A (en) * | 1993-03-16 | 1997-07-29 | Sharp Kabushiki Saisha | Magneto-optical disk pick-up device having mode splitter using cut off effect caused by tapered waveguide |
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