GB1485068A - Optical couplers - Google Patents
Optical couplersInfo
- Publication number
- GB1485068A GB1485068A GB4786175A GB4786175A GB1485068A GB 1485068 A GB1485068 A GB 1485068A GB 4786175 A GB4786175 A GB 4786175A GB 4786175 A GB4786175 A GB 4786175A GB 1485068 A GB1485068 A GB 1485068A
- Authority
- GB
- United Kingdom
- Prior art keywords
- layer
- grating
- resin
- substrate
- original
- 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.)
- Expired
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
- G02B6/34—Optical coupling means utilising prism or grating
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
- Optical Integrated Circuits (AREA)
- Diffracting Gratings Or Hologram Optical Elements (AREA)
Abstract
1485068 Waveguide coupling; diffraction gratings INSTRUMENTS SA 20 Nov 1975 [20 Nov 1974] 47861/75 Heading G2J Coupling into thin waveguide layer 9 is performed by a reflection diffraction grating 8 disposed between the layer 9 and the substrate 5. In Fig. 2, grating 8 is formed in a layer 6, e.g. 100 microns thick, by copying in a resin from an original. A metal coating 7, e.g. 600 Š thick, is applied to layer 6. The original grating may be obtained by holograph printing of a photo-sensitive surface, or by engraving in a metal. An original grating may be used instead of a copy. Substrate 5 may be of "Pyrex" (Registered Trade Mark) and waveguide layer 9 may be a dielectric resin layer of a few microns thickness. Layer 9 is obtained by evaporation or "turntable" deposition' or by copying in situ in a polymerizable resin by a process similar to that used for mirror copies ( a drop of resin is squeezed by a flat mirror). Conditions for good coupling are given in terms of the grating pitch, the angle of incidence, the refractive index of layer 9, the refractive index of the substrate 5 and the wavelength of the light.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7438128A FR2292243A1 (en) | 1974-11-20 | 1974-11-20 | OPTICAL COUPLER WITH DIFFRACTION NETWORK |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1485068A true GB1485068A (en) | 1977-09-08 |
Family
ID=9145078
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4786175A Expired GB1485068A (en) | 1974-11-20 | 1975-11-20 | Optical couplers |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE2552118C2 (en) |
FR (1) | FR2292243A1 (en) |
GB (1) | GB1485068A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2208016A (en) * | 1987-08-13 | 1989-02-15 | Chubb Electronics Ltd | Data carriers bearing holographic optical elements |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2938810A1 (en) * | 1979-09-25 | 1981-04-09 | Siemens AG, 1000 Berlin und 8000 München | DEVICE FOR INJECTING RADIATION IN AN OPTICAL WAVE GUIDE |
JPS6049306A (en) * | 1983-08-29 | 1985-03-18 | Canon Inc | Optical system for waveguide |
DE102005040990A1 (en) * | 2005-08-29 | 2007-03-01 | Miele & Cie. Kg | Mountable dishwasher for use in kitchen, has light conductor with several sections provided in the form of teeth for guiding light radiations from light source to front side of dishwasher |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE903633C (en) * | 1950-03-02 | 1954-02-08 | Nat Res Dev | Process for replicating or depicting divisions |
DE1622834A1 (en) * | 1968-01-20 | 1970-12-23 | Rudolph D | Optical diffraction gratings |
US3674335A (en) * | 1970-05-25 | 1972-07-04 | Bell Telephone Labor Inc | Light wave coupling into thin film light guides |
-
1974
- 1974-11-20 FR FR7438128A patent/FR2292243A1/en active Granted
-
1975
- 1975-11-20 GB GB4786175A patent/GB1485068A/en not_active Expired
- 1975-11-20 DE DE19752552118 patent/DE2552118C2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2208016A (en) * | 1987-08-13 | 1989-02-15 | Chubb Electronics Ltd | Data carriers bearing holographic optical elements |
Also Published As
Publication number | Publication date |
---|---|
FR2292243B1 (en) | 1978-11-24 |
FR2292243A1 (en) | 1976-06-18 |
DE2552118A1 (en) | 1976-05-26 |
DE2552118C2 (en) | 1982-08-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |