JPS5455456A - Method of composing and separating plural beams - Google Patents
Method of composing and separating plural beamsInfo
- Publication number
- JPS5455456A JPS5455456A JP12217477A JP12217477A JPS5455456A JP S5455456 A JPS5455456 A JP S5455456A JP 12217477 A JP12217477 A JP 12217477A JP 12217477 A JP12217477 A JP 12217477A JP S5455456 A JPS5455456 A JP S5455456A
- Authority
- JP
- Japan
- Prior art keywords
- beams
- bragg
- grating
- composing
- wavelength
- 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
- Diffracting Gratings Or Hologram Optical Elements (AREA)
Abstract
PURPOSE: To efficiently compose or separate plural beams by suing a Bragg's diffraction grating.
CONSTITUTION: A Bragg's diffraction grating 13 having a narrow angle selecting range is prepared. When a first beam 14 having a wavelength λ1 is introduced into the grating 13 in the direction satisfying the Bragg's diffractive condition, it is diffracted as a beams 15 in an efficiency near 100%. When a second beam 16 having a wavelength λ2 is introduced into the grating 14 in the same direction as that of the beam 15, most of it passes as it is and is turned into a transmitted beam 17. When the difference in Bragg's angle between the two beams 14 and 16 is higher than the angle selecting ranges β1 and β2 of the grating 13, the transmissivity of the second beam 16 becomes near 100% so that the two beams 14 and 16 are composed in high efficiency. If diffraction gratings 18 and 19 are used, beams 20 and 21 can also be composed. If the composed beam is irradiated in the opposite direction, the separation can be accomplished
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12217477A JPS5455456A (en) | 1977-10-12 | 1977-10-12 | Method of composing and separating plural beams |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12217477A JPS5455456A (en) | 1977-10-12 | 1977-10-12 | Method of composing and separating plural beams |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP23890185A Division JPS61221723A (en) | 1985-10-25 | 1985-10-25 | Method for multiplexing plural beams |
JP17615786A Division JPS6236628A (en) | 1986-07-26 | 1986-07-26 | Method for synthesizing plural beams |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5455456A true JPS5455456A (en) | 1979-05-02 |
Family
ID=14829395
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12217477A Pending JPS5455456A (en) | 1977-10-12 | 1977-10-12 | Method of composing and separating plural beams |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5455456A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5677062U (en) * | 1979-11-17 | 1981-06-23 | ||
JPS60225103A (en) * | 1984-04-06 | 1985-11-09 | ドクトル・ヨハネス・ハイデンハイン・ゲゼルシヤフト・ミト・ベシユレンクテル・ハフツング | Reflection phase grating and manufacture thereof |
US5404234A (en) * | 1990-12-27 | 1995-04-04 | Canon Kabushiki Kaisha | Projector using a hologram |
JP2002365675A (en) * | 2001-06-04 | 2002-12-18 | Stanley Electric Co Ltd | Optical member and display device |
JP2007322739A (en) * | 2006-05-31 | 2007-12-13 | Konica Minolta Holdings Inc | Optical system for optical communication and optical communication apparatus |
-
1977
- 1977-10-12 JP JP12217477A patent/JPS5455456A/en active Pending
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5677062U (en) * | 1979-11-17 | 1981-06-23 | ||
JPS626580Y2 (en) * | 1979-11-17 | 1987-02-16 | ||
JPS60225103A (en) * | 1984-04-06 | 1985-11-09 | ドクトル・ヨハネス・ハイデンハイン・ゲゼルシヤフト・ミト・ベシユレンクテル・ハフツング | Reflection phase grating and manufacture thereof |
JPH0377961B2 (en) * | 1984-04-06 | 1991-12-12 | Dokutoru Yohanesu Haidenhain Gmbh | |
US5404234A (en) * | 1990-12-27 | 1995-04-04 | Canon Kabushiki Kaisha | Projector using a hologram |
JP2002365675A (en) * | 2001-06-04 | 2002-12-18 | Stanley Electric Co Ltd | Optical member and display device |
JP2007322739A (en) * | 2006-05-31 | 2007-12-13 | Konica Minolta Holdings Inc | Optical system for optical communication and optical communication apparatus |
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