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RU2009117160A - Одномодовое оптическое волокно, нечувствительное к изгибу - Google Patents

Одномодовое оптическое волокно, нечувствительное к изгибу Download PDF

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RU2009117160A
RU2009117160A RU2009117160/28A RU2009117160A RU2009117160A RU 2009117160 A RU2009117160 A RU 2009117160A RU 2009117160/28 A RU2009117160/28 A RU 2009117160/28A RU 2009117160 A RU2009117160 A RU 2009117160A RU 2009117160 A RU2009117160 A RU 2009117160A
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RU2489740C2 (ru
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МОНМОРИЙОН Луи-Анн ДЕ (FR)
МОНМОРИЙОН Луи-Анн ДЕ
Симон РИШАР (FR)
Симон РИШАР
Дени МОЛЕН (FR)
Дени МОЛЕН
Марианн БИГО-АСТРЮК (FR)
Марианн БИГО-АСТРЮК
Пьер СИЛЛАР (FR)
Пьер СИЛЛАР
Давид БУАВЕН (FR)
Давид БУАВЕН
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Драка Комтек Б.В. (Nl)
Драка Комтек Б.В.
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    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/02Optical fibres with cladding with or without a coating
    • G02B6/036Optical fibres with cladding with or without a coating core or cladding comprising multiple layers
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/02Optical fibres with cladding with or without a coating
    • G02B6/036Optical fibres with cladding with or without a coating core or cladding comprising multiple layers
    • G02B6/03616Optical 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
    • G02B6/03638Optical 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 3 layers only
    • G02B6/0365Optical 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 3 layers only arranged - - +
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/02Optical fibres with cladding with or without a coating
    • G02B6/028Optical fibres with cladding with or without a coating with core or cladding having graded refractive index
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/02Optical fibres with cladding with or without a coating
    • G02B6/02214Optical fibres with cladding with or without a coating tailored to obtain the desired dispersion, e.g. dispersion shifted, dispersion flattened
    • G02B6/02219Characterised 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
    • G02B6/02266Positive dispersion fibres at 1550 nm
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/02Optical fibres with cladding with or without a coating
    • G02B6/02395Glass optical fibre with a protective coating, e.g. two layer polymer coating deposited directly on a silica cladding surface during fibre manufacture

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
  • Lasers (AREA)
  • Glass Compositions (AREA)
  • Optical Communication System (AREA)
  • Optical Integrated Circuits (AREA)
  • Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)

Abstract

1. Одномодовое оптическое волокно, имеющее сниженные потери на изгибе, профиль показателя преломления которого измеряется на радиусах, проходящих от центра волокна к внешней оптической оболочке, волокно содержит ! центральную сердцевину, имеющую радиус r1 и положительную разность показателей преломления Δn1 с оптической оболочкой, ! промежуточную оболочку, имеющую радиус r2 и положительную разность показателей преломления Δn2 с оптической оболочкой, которая меньше разности показателей преломления Δn1 сердцевины, ! оболочку с вдавленными канавками, имеющую радиус r3 и отрицательную разность показателей преломления Δn3 с оптической оболочкой, ! причем волокно имеет диаметр поля моды (MFD) от 8,6 до 9,5 мкм на длине волны 1310 нм, и, для длины волны 1550 нм, потери на изгибе меньше 0,25·10-3 дБ/виток для радиуса кривизны 15 мм, и ! причем, для длины волны 1260 нм, мода LP11 волокна затухает до 19,3 дБ на протяжении длины меньше 90 м. ! 2. Волокно по п.1, в котором поверхностный интеграл центральной сердцевины (V01), заданный как ! ! составляет от 20,0·10-3 до 23,0·10-3 мкм. ! 3. Волокно по п.1, в котором поверхностный интеграл по оболочке с вдавленными канавками (V03), заданный как ! ! составляет от -55,0·10-3 до -30,0·10-3 мкм. ! 4. Волокно по п.1, в котором объемный интеграл по оболочке с вдавленными канавками (V13), заданный как ! ! составляет от -1200·10-3 до -750·10-3 мкм2. ! 5. Волокно по п.1, дополнительно имеющее эффективную длину волны отсечки лceff больше 1350 нм, причем эффективная длина волны отсечки лceff измеряется как длина волны, на которой оптический сигнал становится одномодовым после распространения по двум метрам волокна. ! 6. Волокно по п.1, дополнительно имеющее, для длин

Claims (15)

1. Одномодовое оптическое волокно, имеющее сниженные потери на изгибе, профиль показателя преломления которого измеряется на радиусах, проходящих от центра волокна к внешней оптической оболочке, волокно содержит
центральную сердцевину, имеющую радиус r1 и положительную разность показателей преломления Δn1 с оптической оболочкой,
промежуточную оболочку, имеющую радиус r2 и положительную разность показателей преломления Δn2 с оптической оболочкой, которая меньше разности показателей преломления Δn1 сердцевины,
оболочку с вдавленными канавками, имеющую радиус r3 и отрицательную разность показателей преломления Δn3 с оптической оболочкой,
причем волокно имеет диаметр поля моды (MFD) от 8,6 до 9,5 мкм на длине волны 1310 нм, и, для длины волны 1550 нм, потери на изгибе меньше 0,25·10-3 дБ/виток для радиуса кривизны 15 мм, и
причем, для длины волны 1260 нм, мода LP11 волокна затухает до 19,3 дБ на протяжении длины меньше 90 м.
2. Волокно по п.1, в котором поверхностный интеграл центральной сердцевины (V01), заданный как
Figure 00000001
составляет от 20,0·10-3 до 23,0·10-3 мкм.
3. Волокно по п.1, в котором поверхностный интеграл по оболочке с вдавленными канавками (V03), заданный как
Figure 00000002
составляет от -55,0·10-3 до -30,0·10-3 мкм.
4. Волокно по п.1, в котором объемный интеграл по оболочке с вдавленными канавками (V13), заданный как
Figure 00000003
составляет от -1200·10-3 до -750·10-3 мкм2.
5. Волокно по п.1, дополнительно имеющее эффективную длину волны отсечки лceff больше 1350 нм, причем эффективная длина волны отсечки лceff измеряется как длина волны, на которой оптический сигнал становится одномодовым после распространения по двум метрам волокна.
6. Волокно по п.1, дополнительно имеющее, для длины волны 1550 нм, потери на изгибе меньше или равны 7,5·10-3 дБ/виток для радиуса кривизны 10 мм, предпочтительно для длины волны 1550 нм, потери на изгибе меньше 0,15 дБ/виток для радиуса кривизны 5 мм.
7. Волокно по п.1, дополнительно имеющее, для длины волны 1625 нм, потери на изгибе меньше или равны 25·10-3 дБ/виток для радиуса кривизны 10 мм, предпочтительно для длины волны 1625 нм, потери на изгибе меньше 0,25 дБ/виток для радиуса кривизны 5 мм.
8. Волокно по п.1, дополнительно имеющее длину волны отсечки кабеля от 1250 до 1300 нм, причем длина волны отсечки кабеля - это длина волны, за пределами которой затухание моды LP11 больше или равно 19,3 дБ после распространения по 22 м волокна.
9. Волокно по п.1, дополнительно имеющее теоретическую длину волны отсечки меньшую или равную 1250 нм, причем теоретическая длина волны отсечки - это длина волны, за пределами которой мода LP11 распространяется в режиме утечки.
10. Волокно по п.1, в котором центральная сердцевина имеет радиус (r1) от 3,8 до 4,35 мкм, и/или в котором центральная сердцевина имеет разность показателей преломления (Δn1) с оптической оболочкой от 5,3·10-3 до 5,7·10-3.
11. Волокно по п.1, в котором промежуточная оболочка имеет радиус (r2) от 8,5 до 9,7 мкм, и/или в котором промежуточная оболочка имеет разность показателей преломления (Δn2) с оптической оболочкой от 0,1·10-3 до 0,6·10-3.
12. Волокно по п.1, в котором оболочка с вдавленными канавками имеет радиус (r3) от 13,5 до 16 мкм, предпочтительно оболочка с вдавленными канавками имеет радиус (r3) меньший или равный 15 мкм и/или теоретическую длину волны отсечки, и/или оболочка с вдавленными канавками имеет разность показателей преломления (Δn3) с оптической оболочкой от -10,0·10-3 до -5,0·10-3.
13. Волокно по п.1, дополнительно имеющее длину волны нулевой хроматической дисперсии (ZDW) от 1300 до 1324 нм и/или дополнительно имеющее значение наклона хроматической дисперсии на длине волны нулевой хроматической дисперсии (ZDS) меньше 0,092 пс/(нм2·км).
14. Оптическая коробка, принимающая, по меньшей мере, участок оптического волокна по любому из предыдущих пунктов, в которой волокно имеет радиус кривизны меньше 15 мм, причем предпочтительно волокно имеет радиус кривизны около 5 мм.
15. Оптоволоконная система, подведенная к дому абонента (FTTH), содержащая, по меньшей мере, один участок оптического волокна по любому из пп.1-13.
RU2009117160/28A 2008-05-06 2009-05-05 Одномодовое оптическое волокно, нечувствительное к изгибу RU2489740C2 (ru)

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FR08/02503 2008-05-06
FR0802503A FR2930997B1 (fr) 2008-05-06 2008-05-06 Fibre optique monomode
US10133708P 2008-09-30 2008-09-30
US61/101,337 2008-09-30
US11200608P 2008-11-06 2008-11-06
US61/112,006 2008-11-06

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