DK2209029T3 - Optisk fiber - Google Patents

Optisk fiber Download PDF

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Publication number
DK2209029T3
DK2209029T3 DK10000304T DK10000304T DK2209029T3 DK 2209029 T3 DK2209029 T3 DK 2209029T3 DK 10000304 T DK10000304 T DK 10000304T DK 10000304 T DK10000304 T DK 10000304T DK 2209029 T3 DK2209029 T3 DK 2209029T3
Authority
DK
Denmark
Prior art keywords
optical fiber
core region
region
leakage
reduction portion
Prior art date
Application number
DK10000304T
Other languages
English (en)
Inventor
Eisuke Sasaoka
Original Assignee
Sumitomo Electric Industries
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 Sumitomo Electric Industries filed Critical Sumitomo Electric Industries
Application granted granted Critical
Publication of DK2209029T3 publication Critical patent/DK2209029T3/da

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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
    • 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
    • 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
    • G02B6/03622—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 2 layers only
    • G02B6/03633—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 2 layers only arranged - -
    • 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
    • G02B6/03694—Multiple layers differing in properties other than the refractive index, e.g. attenuation, diffusion, stress properties

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)

Claims (7)

1. Siliciumdioxidbaseret optisk fiber (100; 200; 300; 400), omfattende: et kerneområde (10), som strækker sig langs en optisk akse (AX); og et kappeområde tilvejebragt på en udvendig periferi af kerneområdet (10), hvor kappeområdet omfatter: en optisk kappe (20), som et område, som påvirker transmissionskarakteristikken for lys, som udbreder sig igennem kerneområdet (10), tilvejebragt på den udvendige periferi af kerneområdet (10); og en fysisk kappe (30), som et område, som ikke påvirker transmissionskarakteristikken for lys, som udbreder sig igennem kerneområdet (10) i den tilstand, hvor den siliciumdioxidbaserede optiske fiber (100; 200; 300; 400) ikke er bukket, tilvejebragt på en udvendig periferi af den optiske kappe (20), kendetegnet ved, at den fysiske kappe (30) omfatter en lækagereduktionsdel (31; 31A; 31B; 31 C) til at undertrykke udbredelsen uden for kappeområdet, af lækket lys, som er ankommet via den optiske kappe (20) fra kerneområdet (10), og at i et tværsnit af den optiske fiber (100; 200; 300; 400), vinkelret på den optiske akse (AX), er lækagereduktionsdelen (31; 31A; 31B; 31 C) tilvejebragt imellem en udvendig overflade på kappeområdet og en position, hvor en afstand fra den optiske akse (AX) er 5/2 gange modusfeltdiameteren for den optiske fiber (100; 200; 300; 400) ved en bølgelængde 1,55 pm, eller, imellem en udvendig overflade af kappeområdet og en position, hvor en elektrisk feltamplitude for den optiske fiber (100; 200; 300; 400) er 10"4 gange en spidsværdi eller mindre.
2. Siliciumdioxidbaseret optisk fiber (100; 200; 300; 400) i overensstemmelse med krav 1, hvor, i en tilstand, hvor den optiske fiber (100; 200; 300; 400) er bukket med en forudbestemt radius (r), reducerer lækagereduktionsdelen (31; 31A; 31B; 31 C) et forhold mellem lysmængden af lækagelys, som passerer igennem lækagereduktionsdelen (31; 31A; 31B; 31 C) og den lysmængde af lækagelys, som ankommer fra den bukkede del af kerneområdet (10), til en 1/10 eller mindre.
3. Siliciumdioxidbaseret optisk fiber (100) i overensstemmelse med krav 1, hvor, ved absorbering af en del af lækagelys, som ankommer fra kerneområdet (10), lækagereduktionsdelen (31; 31A; 31B; 31C) reducerer lysmængden af lækagelys, som udbreder sig uden for kappeområdet. 9
4. Siliciumdioxidbaseret optisk fiber (200) i overensstemmelse med krav 1, hvor, ved at forårsage at lækagelyset, som ankommer fra kerneområdet (10), bliver afbøjet, reducerer lækagereduktionsdelen (31A) den lysmængde af lækagelys, som udbreder sig uden for kappeområdet.
5. Siliciumdioxidbaseret optisk fiber (200) i overensstemmelse med krav 4, hvor lækagereduktionsdelen (31A) har et hul (310A) eller en slids, som strækker sig langs kerneområdet (10), hvorved forekomsten af hullet (310A) eller slidsen indeslutter lækagelyset, som er ankommet fra kerneområdet (10), inden for et indvendigt område placeret på kerneområdesiden af lækagereduktionsdelen (31A).
6. Siliciumdioxidbaseret optisk fiber (300) i overensstemmelse med krav 4, hvor lækagereduktionsdelen (31B) har et højere brydningsindeks end brydningsindeks for den optiske kappe (20) og den fysiske kappe (30), hvorfra lækagereduktionsdelen (31B) er undtaget, hvorved lækagelyset, som er ankommet fra kerneområdet (10), udbreder sig igennem lækagereduktionsdelen (31B).
7. Siliciumdioxidbaseret optisk fiber (400) i overensstemmelse med krav 4, hvor lækagereduktionsdelen (31 C) omfatter et spinkelt anisotropt element (31 OD), hvor forekomsten af det spinkle anisotrope element (31 OD) forøger spredningen af lækagelyset, som er ankommet fra kerneområdet (10). 10
DK10000304T 2009-01-19 2010-01-14 Optisk fiber DK2209029T3 (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2009009095 2009-01-19

Publications (1)

Publication Number Publication Date
DK2209029T3 true DK2209029T3 (da) 2015-04-13

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Family Applications (1)

Application Number Title Priority Date Filing Date
DK10000304T DK2209029T3 (da) 2009-01-19 2010-01-14 Optisk fiber

Country Status (5)

Country Link
US (2) US20100183272A1 (da)
EP (1) EP2209029B1 (da)
JP (1) JP2010186180A (da)
CN (1) CN101788696B (da)
DK (1) DK2209029T3 (da)

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Also Published As

Publication number Publication date
US8687931B2 (en) 2014-04-01
CN101788696A (zh) 2010-07-28
US20100183272A1 (en) 2010-07-22
EP2209029A2 (en) 2010-07-21
US20140064684A1 (en) 2014-03-06
CN101788696B (zh) 2014-05-07
EP2209029A3 (en) 2010-08-04
JP2010186180A (ja) 2010-08-26
EP2209029B1 (en) 2015-03-11

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