Patent SG-11201803838T-A (SG)
Title: An element for a preform, a fiber production method and an optical fiber drawn from the preform
Inventor: SIMONSEN HARALD ROAGER
IPC: G02B6/032
Filed: 2016-11-10
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) CORRECTED VERSION m„,,, „,,,,,„1,,„1„,„„,,,,,,,,,,,,,,,,„,,,,,„,„,,,,,„,,H,,,,,,H,,,,,,„,„, (19) World Intellectual Property ---,. Organization International Bureau ....i (43) International Publication Date ....../ 18 May 2017 (18.05.2017) WIPO I PCT (10) WO International 2017/080564 Publication Number A9 (51) International Patent Classification: AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CO3B 37/012 (2006.01) G02B 6/032 (2006.01) CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, (21) International Application Number: DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, PCT/DK2016/050364 HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, (22) International Filing Date: MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, 10 November 2016 (10.11.2016) 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, (25) Filing Language: English TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (26) Publication Language: English (84) Designated States (unless otherwise indicated, for every (30) Priority Data: kind of regional protection available): ARIPO (BW, GH, PA 2015 70724 10 November 2015 (10.11.2015) DK GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, (71) Applicant: NKT PHOTONICS A/S [DK/DK]; Blokken TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, 84, 3460 Birkerod (DK). EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, (72) Inventors: SIMONSEN, Harald Roager; Ledreborg Alle MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, 1H, 4320 Lejre (DK). JAKOBSEN, Christian; Virumgade TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, — 37a, 2830 Virum (DK). KM, ML, MR, NE, SN, TD, TG). = (74) Agent: HEGNER & PARTNERS A/S; Symbion Science Published: Park, Fruebjergvej 3, 2100 Copenhagen 0 (DK). — with international search report (Art 21(3)) = (81) Designated States (unless otherwise indicated, for every (48) Date of publication of this corrected version: kind of national protection available): AE, AG, AL, AM, 12 April 2018 (12.04.2018) = = = (54) Title: AN ELEMENT FOR A PREFORM, A FIBER PRODUCTION METHOD AND AN OPTICAL FIBER DRAWN FROM — THE PREFORM = (57) : A prefol element, it production and fiber production methods from preform assemblies are disclosed. The element a length and a center axis along its length, prefoiinhas 581 = (ED ------- 56 181 a first and second end defined by its length and an outer prefolin element surface. The preform Trr,------57 element comprises a plurality of longitudinal structures disposed to fon') longitudinal hole(s) in 59a — 1::, -- 59— a background material. At least one slot extending from its outer prefoiin element surface and ) P2 = intersecting at least one of the longitudinal holes, wherein the at least one slot does not fully 58 = -- 52 _ a intersect the preform element. The preform element may be a preform center element or a preform c3 P3 ring element and may be assembled to a form part of a preform assembly for an optical fiber. = = = Pi- mr3 in P4 — 55 = I 103 _ P5 = — 54 _ 0 \ 53 A.- .4t it un W -- \ -53a 2 O it- - - 1-1 Fig. 7b 0 N O [Continued on next page] WO 2017/080564 A9 MIDEDIMO1101010111010111001111111111111111111111001M1110EE# (15) Information about Correction: see Notice of 12 April 2018 (12.04.2018)