GB9627057D0 - Isolated multiple grating systems for filtering requirements - Google Patents

Isolated multiple grating systems for filtering requirements

Info

Publication number
GB9627057D0
GB9627057D0 GBGB9627057.4A GB9627057A GB9627057D0 GB 9627057 D0 GB9627057 D0 GB 9627057D0 GB 9627057 A GB9627057 A GB 9627057A GB 9627057 D0 GB9627057 D0 GB 9627057D0
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.)
Granted
Application number
GBGB9627057.4A
Other versions
GB2320828A (en
GB2320828B (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Furukawa Research & Engineerin
Original Assignee
Furukawa Research & Engineerin
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Furukawa Research & Engineerin filed Critical Furukawa Research & Engineerin
Priority to GB9627057A priority Critical patent/GB2320828B/en
Priority to GB0030982A priority patent/GB2354895B/en
Publication of GB9627057D0 publication Critical patent/GB9627057D0/en
Publication of GB2320828A publication Critical patent/GB2320828A/en
Application granted granted Critical
Publication of GB2320828B publication Critical patent/GB2320828B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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)
GB9627057A 1996-12-30 1996-12-30 Isolated multiple grating systems for filtering requirements Expired - Fee Related GB2320828B (en)

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 true GB9627057D0 (en) 1997-02-19
GB2320828A GB2320828A (en) 1998-07-01
GB2320828B 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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1240733A1 (en) * 1999-12-17 2002-09-18 Corning O.T.I., Inc. Method and device for locking the wavelength of an optical signal

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE503514C2 (en) * 1995-02-06 1996-07-01 Ericsson Telefon Ab L M Device and method for coupling one or more wavelength channels to and from an optical fiber
JP3329655B2 (en) * 1996-03-04 2002-09-30 ケイディーディーアイ株式会社 Optical ADM device
JPH1032562A (en) * 1996-07-16 1998-02-03 Fujitsu Ltd Optical add/drop circuit
US6144474A (en) * 1996-10-21 2000-11-07 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
JP3555824B2 (en) * 1996-11-21 2004-08-18 日本電気株式会社 Branching device

Also Published As

Publication number Publication date
GB2320828A (en) 1998-07-01
GB0030982D0 (en) 2001-01-31
GB2354895A (en) 2001-04-04
GB2320828B (en) 2001-05-02
GB2354895B (en) 2001-06-13

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20041230