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1. (WO2018043289) CHIRPED FIBER GRATING ELEMENT AND FIBER LASER
Latest bibliographic data on file with the International BureauSubmit observation

Pub. No.: WO/2018/043289 International Application No.: PCT/JP2017/030366
Publication Date: 08.03.2018 International Filing Date: 24.08.2017
IPC:
G02B 6/02 (2006.01) ,H01S 3/067 (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
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
S
DEVICES USING STIMULATED EMISSION
3
Lasers, i.e. devices for generation, amplification, modulation, demodulation, or frequency-changing, using stimulated emission, of infra-red, visible, or ultra-violet waves
05
Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
06
Construction or shape of active medium
063
Waveguide lasers, e.g. laser amplifiers
067
Fibre lasers
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 1-5-1, Kiba, Koto-ku, Tokyo 1358512, JP
Inventors:
阪本 真一 SAKAMOTO, Shinichi; JP
Agent:
特許業務法人HARAKENZO WORLD PATENT & TRADEMARK HARAKENZO WORLD PATENT & TRADEMARK; 大阪府大阪市北区天神橋2丁目北2番6号 大和南森町ビル Daiwa Minamimorimachi Building, 2-6, Tenjinbashi 2-chome Kita, Kita-ku, Osaka-shi, Osaka 5300041, JP
Priority Data:
2016-16827030.08.2016JP
Title (EN) CHIRPED FIBER GRATING ELEMENT AND FIBER LASER
(FR) ÉLÉMENT DE RÉSEAU DE FIBRES À PAS VARIABLE ET LASER À FIBRE
(JA) ファイバチャープドグレーティング素子及びファイバレーザ
Abstract:
(EN) The present invention achieves a chirped fiber grating element with less heat generation in the vicinity of an incident end surface than the conventional. Along with making a grating (11a) pitch Λi become larger with increasing distance from one end surface (1A), the difference Δni in index of refraction for the grating (11a) increases with increasing distance from the end surface (1A).
(FR) La présente invention permet d'obtenir un élément de réseau de fibres à pas variable avec moins de génération de chaleur dans le voisinage d'une surface d'extrémité incidente que les techniques classiques. Le long de la réalisation d'un pas (11a) de réseau est plus grand avec une distance croissante depuis une surface d'extrémité (1A), la différence Δni dans l'indice de réfraction pour le réseau (11a) augmente avec une distance croissante de la surface d'extrémité (1A).
(JA) 従来よりも入射端面近傍における発熱量の小さいファイバチャープドグレーティング素子を実現する。グレーティング(11a)のピッチΛiを、一方の端面(1A)から遠ざかるに従って大きくすると共に、グレーティング(11a)の屈折率差Δniを、端面(1A)から遠ざかるに従って大きくする。
front page image
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, 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 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)
Also published as:
CN109642982EP3508896