JPS57198423A - Planar type optical demultiplexer and multiplexer - Google Patents
Planar type optical demultiplexer and multiplexerInfo
- Publication number
- JPS57198423A JPS57198423A JP8252381A JP8252381A JPS57198423A JP S57198423 A JPS57198423 A JP S57198423A JP 8252381 A JP8252381 A JP 8252381A JP 8252381 A JP8252381 A JP 8252381A JP S57198423 A JPS57198423 A JP S57198423A
- Authority
- JP
- Japan
- Prior art keywords
- fiber
- diffraction grating
- wavelength
- end surface
- incident light
- 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
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
- G02B6/29325—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 of the slab or planar or plate like form, i.e. confinement in a single transverse dimension only
- G02B6/29326—Diffractive elements having focusing properties, e.g. curved gratings
-
- 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
- G02B6/29325—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 of the slab or planar or plate like form, i.e. confinement in a single transverse dimension only
- G02B6/29328—Diffractive elements operating in reflection
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optical Integrated Circuits (AREA)
Abstract
PURPOSE:To reduce connection loss and crosstalk and improve the characteristics of a titled device by forming a slablike lens medium with graded distribution of refractive indexes in its thickness direction and fitting a recessed diffraction grating to one end surface. CONSTITUTION:In a transparent substrate consisting of a dielectric element such as glass and synthetic resin, its refractive indexes are distributed so as to be increased at the center part and reduced gradually in proportion to the access to the surface and then an element substrate 5 of which one end surface is made spherical is formed. Subsequently, a recessed diffraction grating which has been separately prepared is adhered to the spherical part of said element through transparent resin and then an incident fiber and a projection fiber (branching fiber) are connected to the grating. Incident light from an incident light fiber to the optical branching filter with said configuration is diffracted by the diffraction grating 6 and branched into 2 kinds of wavelength or more lambda1, lambda2... and each optical beam is converged into a projection fiber different in every wavelength and projected.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8252381A JPS57198423A (en) | 1981-06-01 | 1981-06-01 | Planar type optical demultiplexer and multiplexer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8252381A JPS57198423A (en) | 1981-06-01 | 1981-06-01 | Planar type optical demultiplexer and multiplexer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57198423A true JPS57198423A (en) | 1982-12-06 |
Family
ID=13776881
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8252381A Pending JPS57198423A (en) | 1981-06-01 | 1981-06-01 | Planar type optical demultiplexer and multiplexer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57198423A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0242574A2 (en) * | 1986-04-04 | 1987-10-28 | Kernforschungszentrum Karlsruhe Gmbh | Procedure for the manufacture of an optical component having one or more echelette-gratings and device thereby obtained |
WO1990002928A1 (en) * | 1988-09-07 | 1990-03-22 | Sira Limited | Imaging spectrometer |
WO2001018579A1 (en) * | 1999-09-08 | 2001-03-15 | Lightchip, Inc. | Wavelength division multiplexing/demultiplexing devices using dual polymer lenses |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5528029A (en) * | 1978-08-17 | 1980-02-28 | Nec Corp | Reflection type light distributor |
JPS5660401A (en) * | 1979-10-22 | 1981-05-25 | Nippon Telegr & Teleph Corp <Ntt> | Optical branching filter |
-
1981
- 1981-06-01 JP JP8252381A patent/JPS57198423A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5528029A (en) * | 1978-08-17 | 1980-02-28 | Nec Corp | Reflection type light distributor |
JPS5660401A (en) * | 1979-10-22 | 1981-05-25 | Nippon Telegr & Teleph Corp <Ntt> | Optical branching filter |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0242574A2 (en) * | 1986-04-04 | 1987-10-28 | Kernforschungszentrum Karlsruhe Gmbh | Procedure for the manufacture of an optical component having one or more echelette-gratings and device thereby obtained |
WO1990002928A1 (en) * | 1988-09-07 | 1990-03-22 | Sira Limited | Imaging spectrometer |
WO2001018579A1 (en) * | 1999-09-08 | 2001-03-15 | Lightchip, Inc. | Wavelength division multiplexing/demultiplexing devices using dual polymer lenses |
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