Patent SG-11201407334W-A (SG)
Title: A light coupling device, and method of making the device
Inventor: TAKAYAMA KAZUYA
IPC: G02B6/26
Filed: 2012-05-17
Abstract: (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 21 November 2013 (21.11.2013) WIPOIPCT (10) International Publication Number WO 2013/172781 A1 (51) International Patent Classification: G02B 6/26 (2006.01) G02B 6/00 (2006.01) G02B 6/70 (2006.01) (21) International Application Number: (22) International Filing Date: PCT/SG2012/000170 17 May 2012 (17.05.2012) English (25) Filing Language: (26) Publication Language: English (71) Applicant (for all designated States except US): NITTO DENKO CORPORATION [JP/JP]; 1-1-2 Shimohozumi Ibaraki, Osaka 567-8680 (JP). (72) Inventors; and (75) Inventors/Applicants (for US only)-. TAKAYAMA, Kazuya [JP/SG]; c/o Nitto Denko Asia Technical Centre Pte Ltd, Biopolis Drive, 3 #03-17/18, Synapse, Singapore 138623 (SG). BHOLA, Bipin Sewakram [IN/SG]; c/o Nitto Denko Asia Technical Centre Pte Ltd, 3 Biopolis Drive, #03-17/18, Synapse, Singapore 138623 (SG). (74) Agent: WATKIN, Timothy Lawrence Harvey; Marks & Clerk Singapore LLP, Tanjong Pagar, PO Box 636, Singa­ pore 910816 (SG). (81) Designated States (unless otherwise indicated, for every kind of national protection available)'. AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, 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. (84) Designated States (unless otherwise indicated, for every kind of regional protection available)'. ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (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), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG). Declarations under Rule 4.17: — of inventorship (Rule 4.17(ivf) Published: — with international search report (Art. 21(3)) (54) Title: A LIGHT COUPLING DEVICE, AND METHOD OF MAKING THE DEVICE 00 l> CJ i> i-H cn i-H o CJ Fig. 5 (57) Abstract: A light coupling device is proposed, as well as a method for fabricating the device. The light coupling device has a coupling spot 4 formed over a transparent substrate 13 with a cladding layer 2 in between. One or more waveguide cores 1 contact the coupling spot, and extend in its plane. Light traverses the transparent substrate 13 and the cladding layer 2, and enters the coup - ling spot 4, where it is scattered by scattering elements. At least a portion of the light enters the waveguide core(s) 1. A first reflec - tion mirror 5 is formed on the surface of the coupling spot facing 4 the transparent substrate 13, with an aperture for the light pass to through. A back reflection mirror 6 is provided on the surface of the coupling spot 4 opposite the transparent substrate 13. A second reflection mirror may 7 be formed between the cladding layer 2 and the transparent substrate 13.