GB2449689B - A method and apparatus relating to optical fibres - Google Patents

A method and apparatus relating to optical fibres

Info

Publication number
GB2449689B
GB2449689B GB0710437A GB0710437A GB2449689B GB 2449689 B GB2449689 B GB 2449689B GB 0710437 A GB0710437 A GB 0710437A GB 0710437 A GB0710437 A GB 0710437A GB 2449689 B GB2449689 B GB 2449689B
Authority
GB
United Kingdom
Prior art keywords
optical fibres
apparatus relating
relating
fibres
optical
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
Application number
GB0710437A
Other versions
GB2449689A (en
GB0710437D0 (en
Inventor
Michael Charles Parker
Makiko Hisatomi
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to GB0710437A priority Critical patent/GB2449689B/en
Publication of GB0710437D0 publication Critical patent/GB0710437D0/en
Publication of GB2449689A publication Critical patent/GB2449689A/en
Application granted granted Critical
Publication of GB2449689B publication Critical patent/GB2449689B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • G02B6/02—Optical fibres with cladding with or without a coating
    • G02B6/02295—Microstructured optical fibre
    • G02B6/023—Microstructured optical fibre having different index layers arranged around the core for guiding light by reflection, i.e. 1D crystal, e.g. omniguide
    • 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
    • G02B6/02057—Optical fibres with cladding with or without a coating comprising gratings
    • G02B6/02076—Refractive index modulation gratings, e.g. Bragg gratings
    • G02B6/0208—Refractive index modulation gratings, e.g. Bragg gratings characterised by their structure, wavelength response
    • G02B6/02085—Refractive index modulation gratings, e.g. Bragg gratings characterised by their structure, wavelength response characterised by the grating profile, e.g. chirped, apodised, tilted, helical
    • 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
    • G02B6/036—Optical fibres with cladding with or without a coating core or cladding comprising multiple layers
    • G02B6/03616—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference
    • G02B6/03688—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference having 5 or more layers
    • 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
    • G02B6/02033—Core or cladding made from organic material, e.g. polymeric material
    • 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
    • G02B6/02214—Optical fibres with cladding with or without a coating tailored to obtain the desired dispersion, e.g. dispersion shifted, dispersion flattened
    • G02B6/02219—Characterised by the wavelength dispersion properties in the silica low loss window around 1550 nm, i.e. S, C, L and U bands from 1460-1675 nm
    • G02B6/02252—Negative dispersion fibres at 1550 nm
    • G02B6/02261—Dispersion compensating fibres, i.e. for compensating positive dispersion of other fibres
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/06—Construction or shape of active medium
    • H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
    • H01S3/067—Fibre lasers
    • H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
    • H01S3/06729—Peculiar transverse fibre profile
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/06—Construction or shape of active medium
    • H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
    • H01S3/067—Fibre lasers
    • H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
    • H01S3/06729—Peculiar transverse fibre profile
    • H01S3/06741—Photonic crystal fibre, i.e. the fibre having a photonic bandgap
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/09—Processes or apparatus for excitation, e.g. pumping
    • H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
    • H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
    • H01S3/094003—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light the pumped medium being a fibre
    • H01S3/094007—Cladding pumping, i.e. pump light propagating in a clad surrounding the active core

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
GB0710437A 2007-05-31 2007-05-31 A method and apparatus relating to optical fibres Expired - Fee Related GB2449689B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0710437A GB2449689B (en) 2007-05-31 2007-05-31 A method and apparatus relating to optical fibres

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0710437A GB2449689B (en) 2007-05-31 2007-05-31 A method and apparatus relating to optical fibres

Publications (3)

Publication Number Publication Date
GB0710437D0 GB0710437D0 (en) 2007-07-11
GB2449689A GB2449689A (en) 2008-12-03
GB2449689B true GB2449689B (en) 2010-04-28

Family

ID=38289646

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0710437A Expired - Fee Related GB2449689B (en) 2007-05-31 2007-05-31 A method and apparatus relating to optical fibres

Country Status (1)

Country Link
GB (1) GB2449689B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010003750A1 (en) 2010-04-08 2011-10-13 Trumpf Laser- Und Systemtechnik Gmbh Method and arrangement for changing the beam profile characteristic of a laser beam by means of a multiple-clad fiber
US10574021B2 (en) 2016-05-13 2020-02-25 Corning Incorporated Optical tube waveguide lasing medium and related method
CN109155499A (en) * 2016-05-13 2019-01-04 康宁股份有限公司 Optics tube waveguide emits laser medium and associated method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003093885A2 (en) * 2002-04-29 2003-11-13 E.I. Du Pont De Nemours And Company Effective refractive index chirped bragg gratings
WO2006072025A2 (en) * 2004-12-30 2006-07-06 Imra America, Inc. Photonic bandgap fibers

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003093885A2 (en) * 2002-04-29 2003-11-13 E.I. Du Pont De Nemours And Company Effective refractive index chirped bragg gratings
WO2006072025A2 (en) * 2004-12-30 2006-07-06 Imra America, Inc. Photonic bandgap fibers

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
JOURNAL OF LIGHTWAVE TECHNOLOGY, VOL. 23, NO. 11, NOVEMBER 2005, Hisatomi et al, "Binary Multi-Zoned Microstructured Fiber: A Comparative Dispersion Analysis of Radially Chirped Bragg Fiber", pages 3551 to 3557 *
Parker et al, "Hollow-Core Radially-Chirped Bragg Fiber for Quasi-metallic Photonic Bandgap Light Confinement" [online] 2006, Fujitsu and Uni. Of Essex *

Also Published As

Publication number Publication date
GB2449689A (en) 2008-12-03
GB0710437D0 (en) 2007-07-11

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Legal Events

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

Effective date: 20150531