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WO2018138472A3 - Apparatus and method for optical filtering comprising an optical fibre and a bending mechanism for bending the optical fibre - Google Patents

Apparatus and method for optical filtering comprising an optical fibre and a bending mechanism for bending the optical fibre Download PDF

Info

Publication number
WO2018138472A3
WO2018138472A3 PCT/GB2018/000014 GB2018000014W WO2018138472A3 WO 2018138472 A3 WO2018138472 A3 WO 2018138472A3 GB 2018000014 W GB2018000014 W GB 2018000014W WO 2018138472 A3 WO2018138472 A3 WO 2018138472A3
Authority
WO
WIPO (PCT)
Prior art keywords
optical
optical fibre
bending
cladding
stop band
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.)
Ceased
Application number
PCT/GB2018/000014
Other languages
French (fr)
Other versions
WO2018138472A2 (en
Inventor
Christophe André CODEMARD
Mikhail Nickolaos Zervas
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.)
Trumpf Laser UK Ltd
Original Assignee
SPI Lasers UK Ltd
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 SPI Lasers UK Ltd filed Critical SPI Lasers UK Ltd
Publication of WO2018138472A2 publication Critical patent/WO2018138472A2/en
Publication of WO2018138472A3 publication Critical patent/WO2018138472A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/36—Removing material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
    • B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/20—Bonding
    • B23K26/21—Bonding by welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/352—Working by laser beam, e.g. welding, cutting or boring for surface treatment
    • 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
    • G02B6/02—Optical fibres with cladding with or without a coating
    • G02B6/02052—Optical fibres with cladding with or without a coating comprising optical elements other than gratings, e.g. filters
    • 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
    • G02B6/02—Optical fibres with cladding with or without a coating
    • G02B6/02295—Microstructured optical fibre
    • G02B6/02314—Plurality of longitudinal structures extending along optical fibre axis, e.g. holes
    • G02B6/02342—Plurality of longitudinal structures extending along optical fibre axis, e.g. holes characterised by cladding features, i.e. light confining region
    • G02B6/0238—Longitudinal structures having higher refractive index than background material, e.g. high index solid rods
    • 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
    • G02B6/02—Optical fibres with cladding with or without a coating
    • G02B6/02295—Microstructured optical fibre
    • G02B6/02314—Plurality of longitudinal structures extending along optical fibre axis, e.g. holes
    • G02B6/0239—Comprising means for varying the guiding properties, e.g. tuning means

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Lasers (AREA)

Abstract

The present application relates to an apparatus for optical radiation propagating along an optical fibre (1), which apparatus comprises the optical fibre (1) and at least one bending mechanism (2) for bending the optical fibre (1), wherein the optical fibre (1) comprises a comprises a core (3), a cladding (4), and at least one resonant coupling structure (5) within the cladding (4); and the resonant coupling structure (5) is such that it couples optical radiation (6) within a spectral bandwidth (8) defined by a first stop band edge (11) and a second stop band edge (12), the optical radiation (6) being coupled between the core (3) and the cladding (4); wherein the cladding (4) is defined by an optical loss (10) which causes the optical radiation (6) that is coupled between the core (3) and the cladding (4) to be attenuated at wavelengths between the first stop band edge (11) and the second stop band edge (12), and thereby defining a stop band (7) having the spectral bandwidth (8); and the bending mechanism (2) and the resonant coupling structure (5) are such that bending the optical fibre (1) changes the spectral bandwidth (8).
PCT/GB2018/000014 2017-01-27 2018-01-26 Apparatus and method for optical filtering Ceased WO2018138472A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB1701449.9A GB201701449D0 (en) 2017-01-27 2017-01-27 Apparatus and method for optical filtering
GB1701449.9 2017-01-27

Publications (2)

Publication Number Publication Date
WO2018138472A2 WO2018138472A2 (en) 2018-08-02
WO2018138472A3 true WO2018138472A3 (en) 2018-09-27

Family

ID=58462683

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2018/000014 Ceased WO2018138472A2 (en) 2017-01-27 2018-01-26 Apparatus and method for optical filtering

Country Status (2)

Country Link
GB (1) GB201701449D0 (en)
WO (1) WO2018138472A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021110312A1 (en) * 2019-12-06 2021-06-10 Gpx Medical Ab A device for smoothing spectral transmission modulations and a method thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4912523A (en) * 1987-04-10 1990-03-27 At&T Bell Laboratories Optical fiber communication system comprising mode-stripping means
JPH08101310A (en) * 1994-09-30 1996-04-16 Nippon Telegr & Teleph Corp <Ntt> Reflective fiber grating filter
US20090092352A1 (en) * 2005-04-05 2009-04-09 Agency For Science, Technology And Research Optical fiber strain sensor
US20110188825A1 (en) * 2008-08-18 2011-08-04 Nkt Photonica A/S Optical fiber with resonant structure of cladding features connected to light sink
US20110235969A1 (en) * 2010-03-24 2011-09-29 Fujikura Ltd. Optical fiber-type optical filter
CN105372754A (en) * 2015-11-27 2016-03-02 西北工业大学 Graphene-assisted all-optical driving fiber grating tuner and calibration method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4912523A (en) * 1987-04-10 1990-03-27 At&T Bell Laboratories Optical fiber communication system comprising mode-stripping means
JPH08101310A (en) * 1994-09-30 1996-04-16 Nippon Telegr & Teleph Corp <Ntt> Reflective fiber grating filter
US20090092352A1 (en) * 2005-04-05 2009-04-09 Agency For Science, Technology And Research Optical fiber strain sensor
US20110188825A1 (en) * 2008-08-18 2011-08-04 Nkt Photonica A/S Optical fiber with resonant structure of cladding features connected to light sink
US20110235969A1 (en) * 2010-03-24 2011-09-29 Fujikura Ltd. Optical fiber-type optical filter
CN105372754A (en) * 2015-11-27 2016-03-02 西北工业大学 Graphene-assisted all-optical driving fiber grating tuner and calibration method

Also Published As

Publication number Publication date
WO2018138472A2 (en) 2018-08-02
GB201701449D0 (en) 2017-03-15

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