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1. (WO2018003184) OPTICAL FIBER FOR AMPLIFICATION, AND LASER DEVICE
Latest bibliographic data on file with the International Bureau    Submit observation

Pub. No.:    WO/2018/003184    International Application No.:    PCT/JP2017/008748
Publication Date: 04.01.2018 International Filing Date: 06.03.2017
IPC:
H01S 3/067 (2006.01), G02B 6/02 (2006.01), G02B 6/036 (2006.01), H01S 3/10 (2006.01)
Applicants: FUJIKURA LTD. [JP/JP]; 5-1, Kiba 1-chome, Koto-ku, Tokyo 1358512 (JP)
Inventors: KITAHARA Rintaro; (JP)
Agent: MORIMURA Yasuo; (JP).
AOKI Hiroaki; (JP)
Priority Data:
2016-129763 30.06.2016 JP
Title (EN) OPTICAL FIBER FOR AMPLIFICATION, AND LASER DEVICE
(FR) FIBRE OPTIQUE POUR AMPLIFICATION ET DISPOSITIF LASER
(JA) 増幅用光ファイバ、及び、レーザ装置
Abstract: front page image
(EN)This optical fiber for amplification 1 comprises: a core 11 to which an active element has been added and through which light can propagate in multimode; inner cladding 12 that surrounds the core 11 and which has a lower refractive index than the core 11, and outer cladding 13 that surrounds the inner cladding 12 and which has a lower refractive index than the inner cladding 12. The outer periphery of the inner cladding 12 is a polygonal shape in a cross section perpendicular to the longitudinal direction, and the inner cladding 12 has permanent torsion applied thereto, said torsion being rotated about the central axis of the core 11.
(FR)Cette fibre optique pour amplification 1 comprend : un noyau 11 auquel un élément actif a été ajouté et à travers lequel la lumière peut se propager en multimode; un revêtement intérieur 12 qui entoure le noyau 11 et qui a un indice de réfraction inférieur à celui du noyau 11, et une gaine extérieure 13 qui entoure la gaine intérieure 12 et qui a un indice de réfraction inférieur à celui de la gaine intérieure 12. La périphérie externe de la gaine interne est de forme polygonale dans une section transversale perpendiculaire à la direction longitudinale, et la gaine interne 12 a une torsion permanente appliquée à celle-ci, ladite torsion étant mise en rotation autour de l'axe central du noyau 11.
(JA)本発明の増幅用光ファイバ1は、光がマルチモードで伝搬可能であって活性元素が添加されたコア11と、コア11を囲いコア11よりも屈折率が低い内側クラッド12と、内側クラッド12を囲い内側クラッド12よりも屈折率が低い外側クラッド13と、を備え、内側クラッド12の外周は、長手方向に垂直な断面において多角形であり、内側クラッド12は、コア11の中心軸を中心として回転された恒久的なねじれが付加されていることを特徴とする。
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, 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 (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (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)