GB2320828B - Isolated multiple grating systems for filtering requirements - Google Patents
Isolated multiple grating systems for filtering requirementsInfo
- Publication number
- GB2320828B GB2320828B GB9627057A GB9627057A GB2320828B GB 2320828 B GB2320828 B GB 2320828B GB 9627057 A GB9627057 A GB 9627057A GB 9627057 A GB9627057 A GB 9627057A GB 2320828 B GB2320828 B GB 2320828B
- Authority
- GB
- United Kingdom
- Prior art keywords
- filtering requirements
- multiple grating
- isolated multiple
- grating systems
- systems
- 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 - Fee Related
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
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
- G02B6/29304—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by diffraction, e.g. grating
- G02B6/29316—Light guides comprising a diffractive element, e.g. grating in or on the light guide such that diffracted light is confined in the light guide
- G02B6/29317—Light guides of the optical fibre type
- G02B6/29319—With a cascade of diffractive elements or of diffraction operations
-
- 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
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
- G02B6/29304—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by diffraction, e.g. grating
- G02B6/29316—Light guides comprising a diffractive element, e.g. grating in or on the light guide such that diffracted light is confined in the light guide
- G02B6/29317—Light guides of the optical fibre type
- G02B6/29319—With a cascade of diffractive elements or of diffraction operations
- G02B6/2932—With a cascade of diffractive elements or of diffraction operations comprising a directional router, e.g. directional coupler, circulator
-
- 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
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
- G02B6/29379—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device
- G02B6/2938—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device for multiplexing or demultiplexing, i.e. combining or separating wavelengths, e.g. 1xN, NxM
- G02B6/29382—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device for multiplexing or demultiplexing, i.e. combining or separating wavelengths, e.g. 1xN, NxM including at least adding or dropping a signal, i.e. passing the majority of signals
- G02B6/29383—Adding and dropping
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Integrated Circuits (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9627057A GB2320828B (en) | 1996-12-30 | 1996-12-30 | Isolated multiple grating systems for filtering requirements |
GB0030982A GB2354895B (en) | 1996-12-30 | 1996-12-30 | Isolated multiple grating system for filtering requirements |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9627057A GB2320828B (en) | 1996-12-30 | 1996-12-30 | Isolated multiple grating systems for filtering requirements |
Publications (3)
Publication Number | Publication Date |
---|---|
GB9627057D0 GB9627057D0 (en) | 1997-02-19 |
GB2320828A GB2320828A (en) | 1998-07-01 |
GB2320828B true GB2320828B (en) | 2001-05-02 |
Family
ID=10805109
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9627057A Expired - Fee Related GB2320828B (en) | 1996-12-30 | 1996-12-30 | Isolated multiple grating systems for filtering requirements |
GB0030982A Expired - Fee Related GB2354895B (en) | 1996-12-30 | 1996-12-30 | Isolated multiple grating system for filtering requirements |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB0030982A Expired - Fee Related GB2354895B (en) | 1996-12-30 | 1996-12-30 | Isolated multiple grating system for filtering requirements |
Country Status (1)
Country | Link |
---|---|
GB (2) | GB2320828B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU2674101A (en) * | 1999-12-17 | 2001-06-25 | Corning O.T.I. S.P.A. | Method and device for locking the wavelength of an optical signal |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996024871A1 (en) * | 1995-02-06 | 1996-08-15 | Telefonaktiebolaget Lm Ericsson (Publ) | Arrangement and method at an optical fibre |
EP0794629A2 (en) * | 1996-03-04 | 1997-09-10 | Kokusai Denshin Denwa Kabushiki Kaisha | Optical add-drop multiplexer |
GB2315380A (en) * | 1996-07-16 | 1998-01-28 | Fujitsu Ltd | Optical add/drop circuit using fibre gratings |
EP0844757A2 (en) * | 1996-11-21 | 1998-05-27 | Nec Corporation | Branching system with optical add drop multiplexing function |
EP0853396A2 (en) * | 1996-10-21 | 1998-07-15 | Fujitsu Limited | Optical transmission system including optical repeaters with selectively enabled gain equalizers contained therein and including an add/drop apparatus with a plurality of individually selectable filters |
-
1996
- 1996-12-30 GB GB9627057A patent/GB2320828B/en not_active Expired - Fee Related
- 1996-12-30 GB GB0030982A patent/GB2354895B/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996024871A1 (en) * | 1995-02-06 | 1996-08-15 | Telefonaktiebolaget Lm Ericsson (Publ) | Arrangement and method at an optical fibre |
EP0794629A2 (en) * | 1996-03-04 | 1997-09-10 | Kokusai Denshin Denwa Kabushiki Kaisha | Optical add-drop multiplexer |
GB2315380A (en) * | 1996-07-16 | 1998-01-28 | Fujitsu Ltd | Optical add/drop circuit using fibre gratings |
EP0853396A2 (en) * | 1996-10-21 | 1998-07-15 | Fujitsu Limited | Optical transmission system including optical repeaters with selectively enabled gain equalizers contained therein and including an add/drop apparatus with a plurality of individually selectable filters |
EP0844757A2 (en) * | 1996-11-21 | 1998-05-27 | Nec Corporation | Branching system with optical add drop multiplexing function |
Also Published As
Publication number | Publication date |
---|---|
GB0030982D0 (en) | 2001-01-31 |
GB2320828A (en) | 1998-07-01 |
GB9627057D0 (en) | 1997-02-19 |
GB2354895B (en) | 2001-06-13 |
GB2354895A (en) | 2001-04-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20041230 |