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1. (WO2019017324) OPTICAL FIBER AND METHOD FOR PRODUCING SAME
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Pub. No.: WO/2019/017324 International Application No.: PCT/JP2018/026698
Publication Date: 24.01.2019 International Filing Date: 17.07.2018
IPC:
G02B 6/036 (2006.01) ,C03B 37/018 (2006.01) ,G02B 6/028 (2006.01)
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6
Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
02
Optical fibre with cladding
036
core or cladding comprising multiple layers
C CHEMISTRY; METALLURGY
03
GLASS; MINERAL OR SLAG WOOL
B
MANUFACTURE OR SHAPING OF GLASS, OR OF MINERAL OR SLAG WOOL; SUPPLEMENTARY PROCESSES IN THE MANUFACTURE OR SHAPING OF GLASS, OR OF MINERAL OR SLAG WOOL
37
Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
01
Manufacture of glass fibres or filaments
012
Manufacture of preforms for drawing fibres or filaments
014
made entirely or partially by chemical means
018
by glass deposition on a glass substrate, e.g. by chemical vapour deposition
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6
Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
02
Optical fibre with cladding
028
with core or cladding having graded refractive index
Applicants:
株式会社フジクラ FUJIKURA LTD. [JP/JP]; 東京都江東区木場1丁目5番1号 5-1, Kiba 1-chome, Koto-ku, Tokyo 1358512, JP
Inventors:
丸山 遼 MARUYAMA Ryo; JP
Agent:
棚井 澄雄 TANAI Sumio; JP
五十嵐 光永 IGARASHI Koei; JP
小室 敏雄 KOMURO Toshio; JP
清水 雄一郎 SHIMIZU Yuichiro; JP
Priority Data:
2017-13934918.07.2017JP
2018-04363609.03.2018JP
Title (EN) OPTICAL FIBER AND METHOD FOR PRODUCING SAME
(FR) FIBRE OPTIQUE ET SON PROCÉDÉ DE PRODUCTION
(JA) 光ファイバ、及び、その製造方法
Abstract:
(EN) This optical fiber is provided with: a core, a depressed layer surrounding the core; and a clad surrounding the depressed layer, wherein the refractive index distribution of the core is an α-power distribution having an exponent α of 3.5-6, the absolute value |Δ-| of the relative refractive index difference Δ- between the depressed layer and the clad is set to be within 0.01-0.045%, the ratio of the radius r1 of the core to the outer radius r2 of the depressed layer, that is, r1/r2, is set to be within 0.2-0.6, the 22 m cable cutoff wavelength λcc is 1260 nm or less, and the mode field diameter (MFD) at a wavelength of 1310 nm is 8.6-9.5 µm.
(FR) La présente invention concerne une fibre optique qui comprend : un cœur, une couche enfoncée entourant le cœur ; et une gaine entourant la couche enfoncée, la répartition d'indice de réfraction du cœur étant une répartition de puissance α ayant un exposant α de 3,5 à 6, la valeur absolue |Δ-| de la différence d'indice de réfraction relatif Δ- entre la couche enfoncée et la gaine étant définie de sorte à être comprise entre 0,01 et 0,045 %, le rapport du rayon r1 du cœur au rayon extérieur r2 de la couche enfoncée, à savoir r1/r2, étant défini de sorte à être compris entre 0,2 et 0,6, la longueur d'onde λcc de coupure de câble de 22 m étant inférieure ou égale à 1 260 nm, et le diamètre de champ de mode (MFD) à une longueur d'onde de 1 310 nm étant de 8,6 à 9,5 µm.
(JA) この光ファイバは、コアと、上記コアを取り囲むディプレスド層と、上記ディプレスド層を取り囲むクラッドとを備え、上記コアの屈折率分布は、指数αが3.5以上6以下のα乗分布を有し、上記クラッドに対する上記ディプレスド層の比屈折率差Δ-は、その絶対値|Δ-|が0.01%以上0.045%以下になるように設定されており、上記コアの半径r1及び上記ディプレスド層の外周半径r2は、その比r1/r2が0.2以上0.6以下となるように設定されており、22mのケーブルカットオフ波長λccは、1260nm以下であり、波長1310nmにおけるモードフィールド径MFDは、8.6μm以上9.5μm以下である。
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)