Patent SG-11201806132T-A (SG)
Title: Optical structure and method of forming the same
Inventor: TAN CHUAN SENG
IPC: H01L31/0232
Filed: 2017-02-10
Abstract: WO 17 / 15 1055 Al (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (10) International Publication Number (43) International Publication Date WO 2017/151055 Al 8 September 2017 (08.09.2017) WIPO I PCT 11111111111111011101111111111101011111011101111111101011111111111111111111111110111111 FIG. 1B W core 106 (51) International Patent Classification: GO2B 6/00 (2006.01) H0JL 21/02 (2006.01) H01L 31/0232 (2014.01) (21) International Application Number: PCT/SG2017/050060 (22) International Filing Date: 10 February 2017 (10.02.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 10201601522Q 29 February 2016 (29.02.2016) SG (71) Applicants: NANYANG TECHNOLOGICAL UNI- VERSITY [SG/SG]; 50 Nanyang Avenue, Singapore 639798 (SG). MASSACHUSETTS INSTITUTE OF TECHNOLOGY [US/US]; 77 Massachusetts Avenue, Cambridge, Massachusetts 02139 (US). (72) Inventors: TAN, Chuan Seng; c/o Nanyang Technologic- al University, 50 Nanyang Avenue, Singapore 639798 (SG). LI, Wei; c/o Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798 (SG). ANANTHA, P; c/o Nanyang Technological University, 50 Nanyang Av- enue, Singapore 639798 (SG). LEE, Kwang Hong; c/o Singapore-MIT Alliance for Research and Technology, 1 Create Way, #10-01 Create Tower, Singapore 138602 (SG). BAO, Shuyu; c/o Nanyang Technological Univer- sity, 50 Nanyang Avenue, Singapore 639798 (SG). ZHANG, Lin; c/o Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798 (SG). (74) Agent: VIERING, JENTSCHURA & PARTNER LLP; P.O Box 1088, Rochor Post Office, Rochor Road, Singa- pore 911833 (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, 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. [Continued on next page] (54) Title: OPTICAL STRUCTURE AND METHOD OF FORMING THE SAME (57) : Various embodiments may provide an optical structure. The optical structure may in- clude a substrate. The optical structure may also include a core layer configured to carry optical light. The core layer may include germanium. The 100 optical structure may further include an intermedi- ate layer separating the substrate and the core lay- er so that the substrate is isolated from the core layer. The intermediate layer may include one or more materials selected from a group consisting of III-V materials, dielectric materials, and chalco - 104 genide materials. A width of the core layer may be smaller than a width of the intermediate layer. A refractive index of the core layer may be more than 4. A refractive index of the intermediate layer may be smaller than 3.6. 102 Wintermediate WO 2017/151055 Al MIDEDIMOMOIDEIR010131130101MHIMMOIMIE (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, ST, 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, KM, ML, MR, NE, SN, TD, TG). Published: with international search report (Art. 21(3))